National Library of Energy BETA

Sample records for developing geothermal systems

  1. Geothermal Data Systems

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) Geothermal Technologies Office (GTO) has designed and tested a comprehensive, federated information system that will make geothermal data widely available. This new National Geothermal Data System (NGDS) will provide access to all types of geothermal data to enable geothermal analysis and widespread public use, thereby reducing the risk of geothermal energy development.

  2. Experience with the Development of Advanced Materials for Geothermal Systems

    SciTech Connect (OSTI)

    Sugama, T.; Butcher, T.; Ecker, L.

    2011-01-01

    This chapter contains the following sections: Introduction, Advanced Cements, Materials Research and Development in Enhanced Geothermal Systems (EGS), Advanced Coatings, and Conclusions.

  3. A Technology Roadmap for Strategic Development of Enhanced Geothermal Systems

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    PROCEEDINGS, Thirty-Eighth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, February 11-13, 2013 SGP-TR-198 A TECHNOLOGY ROADMAP FOR STRATEGIC DEVELOPMENT OF ENHANCED GEOTHERMAL SYSTEMS John Ziagos 1 , Benjamin R. Phillips 2,3 , Lauren Boyd 3 , Allan Jelacic 2 , Greg Stillman 3 , and Eric Hass 4 1 Lawrence Livermore National Laboratory, 7000 East Ave., Livermore, CA 94550 2 SRA International, Inc. 3 Geothermal Technologies Office, U.S. DOE, 1000

  4. A Technology Roadmap for Strategic Development of Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Ziagos, John; Phillips, Benjamin R.; Boyd, Lauren; Jelacic, Allan; Stillman, Greg; Hass, Eric

    2013-02-13

    Realization of EGS development would make geothermal a significant contender in the renewable energy portfolio, on the order of 100+ GWe in the United States alone. While up to 90% of the geothermal power resource in the United States is thought to reside in Enhanced Geothermal Systems (EGS), hurdles to commercial development still remain. The Geothermal Technologies Office, U.S. Department of Energy (DOE), began in 2011 to outline opportunities for advancing EGS technologies on five- to 20-year timescales, with community input on the underlying technology needs that will guide research and ultimately determine commercial success for EGS. This report traces DOE's research investments, past and present, and ties them to these technology needs, forming the basis for an EGS Technology Roadmap to help guide future DOE research. This roadmap is currently open for public comment. Send your comments to geothermal@ee.doe.gov.

  5. Further Developments on the Geothermal System Scoping Model: Preprint

    SciTech Connect (OSTI)

    Antkowiak, M.; Sargent, R.; Geiger, J. W.

    2010-07-01

    This paper discusses further developments and refinements for the uses of the Geothermal System Scoping Model in an effort to provide a means for performing a variety of trade-off analyses of surface and subsurface parameters, sensitivity analyses, and other systems engineering studies in order to better inform R&D direction and investment for the development of geothermal power into a major contributor to the U.S. energy supply.

  6. Development of a plan to implement enhanced geothermal system...

    Open Energy Info (EERE)

    Enhanced Geothermal Systems was proposed. This embraces the idea that the amount of permeability and fluid in geothermal resources varies across a spectrum, with HDR at one end,...

  7. National Geothermal Data System: A Geothermal Data System for Exploration and Development

    SciTech Connect (OSTI)

    Allison, Lee; Richard, Stephen; Patten, Kim; Love, Diane; Coleman, Celia; Chen, Genhan

    2012-09-30

    Geothermal-relevant geosciences data from all 50 states (www.stategeothermaldata.org), federal agencies, national labs, and academic centers are being digitized and linked in a distributed online network funded by the U.S. Department of Energy Geothermal Data System (GDS) to foster geothermal energy exploration and development through use of interactive online ‘mashups,’data integration, and applications. Emphasis is first to make as much information as possible accessible online, with a long range goal to make data interoperable through standardized services and interchange formats. A growing set of more than thirty geoscience data content models is in use or under development to define standardized interchange formats for: aqueous chemistry, borehole temperature data, direct use feature, drill stem test, seismic event hypocenter, fault feature, geologic contact feature, geologic unit feature, thermal/hot spring description, metadata, quaternary fault, volcanic vent description, well header feature, borehole lithology log, crustal stress, gravity, heat flow/temperature gradient, permeability, and feature description data like developed geothermal systems, geologic unit geothermal characterization, permeability, production data, rock alteration description, rock chemistry, and thermal conductivity. Map services are also being developed for isopach maps, aquifer temperature maps, and several states are working on geothermal resource overview maps. Content models are developed based on existing community datasets to encourage widespread adoption and promulgate content quality standards. Geoscience data and maps from other GDS participating institutions, or “nodes” (e.g., U.S. Geological Survey, Southern Methodist University, Oregon Institute of Technology, Stanford University, the University of Utah) are being supplemented with extensive land management and land use resources from the Western Regional Partnership (15 federal agencies and 5 Western states) to provide access to a comprehensive, holistic set of data critical to geothermal energy development. As of May 2012 , we have nearly 37,000 records registered in the system catalog, and 550,075 data resources online, along with hundreds of Web services to deliver integrated data to the desktop for free downloading or online use. The data exchange mechanism is built on the U.S. Geoscience Information Network (USGIN, http://usgin.org and http://lab.usgin.org) protocols and standards developed as a partnership of the Association of American State Geologists (AASG) and U.S. Geological Survey (USGS). Keywords Data

  8. Colorado Firm Develops Innovative Materials for Geothermal Systems...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    The company developed materials designed to create and conserve geothermal reservoirs in harsh down-hole environments to produce energy. Composite used an innovative polymer ...

  9. Regional Systems Development for Geothermal Energy Resources...

    Open Energy Info (EERE)

    for representative types of energy conversion processes were developed using a case study approach. Cooling water requirements for each type of energy conversion process...

  10. development Not Available 15 GEOTHERMAL ENERGY; TONGONAN GEOTHERMAL...

    Office of Scientific and Technical Information (OSTI)

    field Leyte, Philippines. Report on exploration and development Not Available 15 GEOTHERMAL ENERGY; TONGONAN GEOTHERMAL FIELD; GEOTHERMAL EXPLORATION; GEOTHERMAL POWER...

  11. Modeling of geothermal systems

    SciTech Connect (OSTI)

    Bodvarsson, G.S.; Pruess, K.; Lippmann, M.J.

    1985-03-01

    During the last decade the use of numerical modeling for geothermal resource evaluation has grown significantly, and new modeling approaches have been developed. In this paper we present a summary of the present status in numerical modeling of geothermal systems, emphasizing recent developments. Different modeling approaches are described and their applicability discussed. The various modeling tasks, including natural-state, exploitation, injection, multi-component and subsidence modeling, are illustrated with geothermal field examples. 99 refs., 14 figs.

  12. EA-1893: Canby Cascaded Geothermal Development System, Canby, California

    Broader source: Energy.gov [DOE]

    This EA will evaluate the environmental impacts of a proposal by Modoc Contracting Company to use DOE grant funds to fulfill its plan to expand its reliance on geothermal resources by producing more hot water and using it to produce power as well as thermal energy. The goal of the project is to complete a cascaded geothermal system that generates green power for the local community, provides thermal energy to support greenhouse and aquaculture operation, provide sustainable thermal energy for residential units, and eliminate the existing geothermal discharge to a local river. NOTE: This EA has been cancelled.

  13. Monitoring and Modeling Fluid Flow in a Developing Enhanced Geothermal...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Enhanced Geothermal System (EGS) Reservoir; 2010 Geothermal Technology Program Peer Review Report Monitoring and Modeling Fluid Flow in a Developing Enhanced Geothermal System ...

  14. Enhanced Geothermal Systems Demonstration Projects

    SciTech Connect (OSTI)

    Geothermal Technologies Office

    2013-08-06

    Several Enhanced Geothermal Systems (EGS) demonstration projects are highlighted on this Geothermal Technologies Office Web page.

  15. Integrated Chemical Geothermometry System for Geothermal Exploration

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Develop practical and reliable system to predict geothermal reservoir temperatures from integrated chemical analyses of spring and well fluids.

  16. Detection and Characterization of Natural and Induced Fractures for the Development of Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    Project objectives: Combine geophysical methods for reservoir and fracture characterization with rock physics measurements made under in-situ conditions (up to 350⁰C) for development of geothermal systems.

  17. track 4: enhanced geothermal systems (EGS) | geothermal 2015...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    4: enhanced geothermal systems (EGS) | geothermal 2015 peer review track 4: enhanced geothermal systems (EGS) | geothermal 2015 peer review The Energy Department pursues research ...

  18. DOE Funds 21 Research, Development and Demonstration Projects for up to $78 Million to Promote Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    Today at the National Geothermal Conference in Reno, Nev., Deputy Assistant Secretary for Renewable Energy Steve Chalk announced the U.S. Department of Energy's (DOE) awards under a Funding Opportunity Announcement (FOA) for research, development and demonstration of Enhanced Geothermal Systems (EGS) for next-generation geothermal energy technologies.

  19. Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    Below are the project presentations and respective peer review results for Engineered Geothermal Systems, Low Temperature and Exploration Demonstration Projects.

  20. A Technology Roadmap for Strategic Development of Enhanced Geothermal...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    A Technology Roadmap for Strategic Development of Enhanced Geothermal Systems A Technology Roadmap for Strategic Development of Enhanced Geothermal Systems DOE Project Partner ...

  1. National Geothermal Data System: Case Studies on Exploration and Development of Potential Geothermal Sites Through Distributed Data Sharing

    SciTech Connect (OSTI)

    Anderson, Arlene; Allison, Lee; Richard, Steve; Caudill-Daugherty, Christy; Patten, Kim

    2014-09-29

    The NGDS released version 1 of the system on April 30, 2014 using the US Geoscience Information Network (USGIN) as its data integration platform. NGDS supports the 2013 Open Data Policy, and as such, the launch was featured at the 2014 Energy Datapalooza. Currently, the NGDS features a comprehensive user interface for searching and accessing nearly 41,000 documents and more than 9 million data points shared by scores of data providers across the U.S. The NGDS supports distributed data sharing, permitting the data owners to maintain the raw data that is made available to the consumer. Researchers and industry have been utilizing the NGDS as a mechanism for promoting geothermal development across the country, from hydrothermal to ground source heat pump applications. Case studies in geothermal research and exploration from across the country are highlighted.

  2. National Geothermal Data System (NGDS)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The National Geothermal Data System (NGDS) is a DOE-funded distributed network of databases and data sites. Much of the risk of geothermal energy development is associated with exploring for, confirming and characterizing the available geothermal resources. The overriding purpose of the NGDS is to help mitigate this up-front risk by serving as a central gateway for geothermal and relevant related data as well as a link to distributed data sources. Assessing and categorizing the nation's geothermal resources and consolidating all geothermal data through a publicly accessible data system will support research, stimulate public interest, promote market acceptance and investment, and, in turn, the growth of the geothermal industry. Major participants in the NGDS to date include universities, laboratories, the Arizona Geological Survey and Association of American State Geologists (Arizona Geological Survey, lead), the Geothermal Resources Council, and the U.S. Geological Survey. The Geothermal Energy Association is collaborating with the NGDS to insure that it meets the needs of the geothermal industry.

  3. Development of Models to Simulate Tracer Behavior in Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Williams, Mark D.; Vermeul, Vincent R.; Reimus, P. W.; Newell, D.; Watson, Tom B.

    2010-06-01

    A recent report found that power and heat produced from engineered (or enhanced) geothermal systems (EGSs) could have a major impact on the United States while incurring minimal environmental impacts. EGS resources differ from high-grade hydrothermal resources in that they lack sufficient temperature distributions, permeability/porosity, fluid saturation, or recharge of reservoir fluids. Therefore, quantitative characterization of temperature distributions and the surface area available for heat transfer in EGS is necessary for commercial development of geothermal energy. The goal of this project is to provide integrated tracer and tracer interpretation tools to facilitate this characterization. Modeling capabilities are being developed as part of this project to support laboratory and field testing to characterize engineered geothermal systems in single- and multi-well tests using tracers. The objective of this report is to describe the simulation plan and the status of model development for simulating tracer tests for characterizing EGS.

  4. Blind Geothermal System | Open Energy Information

    Open Energy Info (EERE)

    Blind Geothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Blind Geothermal System Dictionary.png Blind Geothermal System: An area with a...

  5. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Systems Integration Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Systems Integration The Geothermal Technologies Program Multi-Year ...

  6. Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Systems Integration

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan presents the status of geothermal energy technologies and details program plans from 2009 through 2015, with program activities through 2025.

  7. National Geothermal Data System (NGDS) Geothermal Data Domain...

    Open Energy Info (EERE)

    Geothermal Data System (NGDS) Geothermal Data Domain: Assessment of Geothermal Community Data Needs Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference...

  8. Enhanced Geothermal Systems Demonstration Projects | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    About the Geothermal Technologies Office » Enhanced Geothermal Systems » Enhanced Geothermal Systems Demonstration Projects Enhanced Geothermal Systems Demonstration Projects A significant long-term opportunity for widespread power production from new geothermal sources lies in Enhanced Geothermal Systems (EGS), where innovative technology development and deployment could facilitate access to 100+ GW of energy, exponentially more than today's current geothermal capacity. With EGS, we can tap

  9. Seismic Technology Adapted to Analyzing and Developing Geothermal...

    Open Energy Info (EERE)

    Technology Adapted to Analyzing and Developing Geothermal Systems Below Surface-Exposed High-Velocity Rocks Geothermal Project Jump to: navigation, search Last modified on July 22,...

  10. Development of Models to Simulate Tracer Tests for Characterization of Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Williams, Mark D.; Reimus, Paul; Vermeul, Vincent R.; Rose, Peter; Dean, Cynthia A.; Watson, Tom B.; Newell, D.; Leecaster, Kevin; Brauser, Eric

    2013-05-01

    A recent report found that power and heat produced from enhanced (or engineered) geothermal systems (EGSs) could have a major impact on the U.S energy production capability while having a minimal impact on the environment. EGS resources differ from high-grade hydrothermal resources in that they lack sufficient temperature distribution, permeability/porosity, fluid saturation, or recharge of reservoir fluids. Therefore, quantitative characterization of temperature distributions and the surface area available for heat transfer in EGS is necessary for the design and commercial development of the geothermal energy of a potential EGS site. The goal of this project is to provide integrated tracer and tracer interpretation tools to facilitate this characterization. This project was initially focused on tracer development with the application of perfluorinated tracer (PFT) compounds, non-reactive tracers used in numerous applications from atmospheric transport to underground leak detection, to geothermal systems, and evaluation of encapsulated PFTs that would release tracers at targeted reservoir temperatures. After the 2011 midyear review and subsequent discussions with the U.S. Department of Energy Geothermal Technology Program (GTP), emphasis was shifted to interpretive tool development, testing, and validation. Subsurface modeling capabilities are an important component of this project for both the design of suitable tracers and the interpretation of data from in situ tracer tests, be they single- or multi-well tests. The purpose of this report is to describe the results of the tracer and model development for simulating and conducting tracer tests for characterizing EGS parameters.

  11. Overview of Geothermal Energy Development Webcast | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Overview of Geothermal Energy Development Webcast Overview of Geothermal Energy Development Webcast PDF icon GeothermalEnergyDevelopmentOverviewPresentation.pdf PDF icon ...

  12. Energy Department Announces National Geothermal Data System to Accelerate

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Geothermal Energy Development | Department of Energy National Geothermal Data System to Accelerate Geothermal Energy Development Energy Department Announces National Geothermal Data System to Accelerate Geothermal Energy Development May 28, 2014 - 3:32pm Addthis In support of the Obama Administration's Open Data Policy to make data more accessible to the public and entrepreneurs, the Energy Department today officially launched the National Geothermal Data System (NGDS), an online open-source

  13. Development of an Advanced Stimulation / Production Predictive Simulator for Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Pritchett, John W.

    2015-04-15

    There are several well-known obstacles to the successful deployment of EGS projects on a commercial scale, of course. EGS projects are expected to be deeper, on the average, than conventional “natural” geothermal reservoirs, and drilling costs are already a formidable barrier to conventional geothermal projects. Unlike conventional resources (which frequently announce their presence with natural manifestations such as geysers, hot springs and fumaroles), EGS prospects are likely to appear fairly undistinguished from the earth surface. And, of course, the probable necessity of fabricating a subterranean fluid circulation network to mine the heat from the rock (instead of simply relying on natural, pre-existing permeable fractures) adds a significant degree of uncertainty to the prospects for success. Accordingly, the basic motivation for the work presented herein was to try to develop a new set of tools that would be more suitable for this purpose. Several years ago, the Department of Energy’s Geothermal Technologies Office recognized this need and funded a cost-shared grant to our company (then SAIC, now Leidos) to partner with Geowatt AG of Zurich, Switzerland and undertake the development of a new reservoir simulator that would be more suitable for EGS forecasting than the existing tools. That project has now been completed and a new numerical geothermal reservoir simulator has been developed. It is named “HeatEx” (for “Heat Extraction”) and is almost completely new, although its methodology owes a great deal to other previous geothermal software development efforts, including Geowatt’s “HEX-S” code, the STAR and SPFRAC simulators developed here at SAIC/Leidos, the MINC approach originally developed at LBNL, and tracer analysis software originally formulated at INEL. Furthermore, the development effort was led by engineers with many years of experience in using reservoir simulation software to make meaningful forecasts for real geothermal projects, not just software designers. It is hoped that, as a result, HeatEx will prove useful during the early stages of the development of EGS technology. The basic objective was to design a tool that could use field data that are likely to become available during the early phases of an EGS project (that is, during initial reconnaissance and fracture stimulation operations) to guide forecasts of the longer-term behavior of the system during production and heat-mining.

  14. Geothermal Technologies Program: Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Not Available

    2004-08-01

    This general publication describes enhanced geothermal systems (EGS) and the principles of operation. It also describes the DOE program R&D efforts in this area, and summarizes several projects using EGS technology.

  15. Development of an Improved Cement for Geothermal Wells | Department of

    Broader source: Energy.gov (indexed) [DOE]

    Energy Development of an Improved Cement for Geothermal Wells presentation at the April 2013 peer review meeting held in Denver, Colorado. PDF icon cement_wells_trabits_peer2013.pdf More Documents & Publications Development of an Improved Cement for Geothermal Wells Geopolymer Sealing Materials track 3: enhanced geothermal systems (EGS) | geothermal 2015 peer review

  16. Enhanced Geothermal Systems (EGS) | Open Energy Information

    Open Energy Info (EERE)

    DOE EGS Technical Roadmap DOE EGS Systems Demonstration Projects How EGS Works (Animation) EGS Development (Animation) EGS Schematic.jpg Dictionary.png Enhanced Geothermal...

  17. National Geothermal Data System (NGDS) Initiative | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Geothermal Data System (NGDS) Initiative National Geothermal Data System (NGDS) Initiative Geothermal energy in the subsurface is better understood through data visualization, as ...

  18. track 4: enhanced geothermal systems (EGS) | geothermal 2015 peer review |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy 4: enhanced geothermal systems (EGS) | geothermal 2015 peer review track 4: enhanced geothermal systems (EGS) | geothermal 2015 peer review The Energy Department pursues research in transformative science and engineering that the private sector is not financially or technically equipped to undertake. At the 2015 Peer Review, awardees in the Geothermal Technologies Office portfolio presented fifty three technical project presentations on enhanced geothermal systems

  19. National Geothermal Data System - DOE Geothermal Data Repository...

    Broader source: Energy.gov (indexed) [DOE]

    National Geothermal Data System (NGDS) and DOE's node on the NGDS. ngdsgdrgeneralpresentation.pdf More Documents & Publications How to Utilize the National Geothermal Data...

  20. Geothermal Research and Development Programs

    Broader source: Energy.gov [DOE]

    Here you'll find links to laboratories, universities, and colleges conducting research and development (R&D) in geothermal energy technologies.

  1. NATIONAL GEOTHERMAL DATA SYSTEM (NGDS) GEOTHERMAL DATA DOMAIN: ASSESSMENT OF GEOTHERMAL COMMUNITY DATA NEEDS

    SciTech Connect (OSTI)

    Anderson, Arlene; Blackwell, David; Chickering, Cathy; Boyd, Toni; Horne, Roland; MacKenzie, Matthew; Moore, Joseph; Nickull, Duane; Richard, Stephen; Shevenell, Lisa A.

    2013-01-01

    To satisfy the critical need for geothermal data to ad- vance geothermal energy as a viable renewable ener- gy contender, the U.S. Department of Energy is in- vesting in the development of the National Geother- mal Data System (NGDS). This paper outlines efforts among geothermal data providers nationwide to sup- ply cutting edge geo-informatics. NGDS geothermal data acquisition, delivery, and methodology are dis- cussed. In particular, this paper addresses the various types of data required to effectively assess geother- mal energy potential and why simple links to existing data are insufficient. To create a platform for ready access by all geothermal stakeholders, the NGDS in- cludes a work plan that addresses data assets and re- sources of interest to users, a survey of data provid- ers, data content models, and how data will be ex- changed and promoted, as well as lessons learned within the geothermal community.

  2. Enhanced Geothermal Systems Technologies

    Broader source: Energy.gov [DOE]

    Geothermal Energy an​d the Enhanced Geothermal Systems Concept The Navy 1 geothermal power plant near Coso Hot Springs, California, is applying EGS technology. Heat is naturally present everywhere in the earth. For all intents and purposes, heat from the earth is inexhaustible. Water is not nearly as ubiquitous in the earth as heat. Most aqueous fluids are derived from surface waters that have percolated into the earth along permeable pathways such as faults. Permeability is a measure of the ease of fluid flow through rock. The permeability of rock results from pores, fractures, joints, faults, and other openings which allow fluids to move. High permeability implies that fluids can flow rapidly through the rock. Permeability and, subsequently, the amount of fluids tend to decrease with depth as openings in the rocks compress from the weight of the overburden.

  3. Geographic Information System At International Geothermal Area...

    Open Energy Info (EERE)

    search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic Information System At International Geothermal Area, Indonesia (Nash, Et Al., 2002) Exploration Activity...

  4. Regulation of geothermal energy development in Colorado

    SciTech Connect (OSTI)

    Coe, B.A.; Forman, N.A.

    1980-01-01

    The regulatory system is presented in a format to help guide geothermal energy development. State, local, and federal agencies, legislation, and regulations are presented. Information sources are listed. (MHR)

  5. OIT geothermal system improvements

    SciTech Connect (OSTI)

    Lienau, P.J.

    1996-08-01

    Three geothermal wells drilled during the original campus construction vary from 396 m (1,300 ft) to 550 m (1,800 ft). These wells supply all of the heating and part of the cooling needs of the 11-building, 62,200 m{sup 2} (670,000 ft{sup 2}) campus. The combined capacity of the well pumps is 62 L/s(980 gpm) of 89{degrees}C (192{degrees}F) geothermal fluids. Swimming pool and domestic hot water heating impose a small but nearly constant year-round flow requirement. In addition to heating, a portion of the campus is also cooled using the geothermal resource. This is accomplished through the use of an absorption chiller. The chiller, which operates on the same principle as a gas refrigerator, requires a flow of 38 L/s (600 gpm) of geothermal fluid and produces 541 kW (154 tons) of cooling capacity (Rafferty, 1989). The annual operating costs for the system is about $35,000 including maintenance salary, equipment replacement and cost of pumping. This amounts to about $0.05 per square foot per year.

  6. Geothermal Data from the National Geothermal Data System (NGDS)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The National Geothermal Data System (NGDS) is a distributed data system providing access to information resources related to geothermal energy from a network of data providers. Data are contributed by academic researchers, private industry, and state and federal agencies. Built on a scalable and open platform through the U.S. Geoscience Information Network (USGIN), NGDS respects data provenance while promoting shared resources.Since NGDS is built using a set of open protocols and standards, relying on the Open Geospatial Consortium (OGC) and International Organization for Standardization (ISO), members of the community may access the data in a variety of proprietary and open-source applications and software. In addition, developers can add functionality to the system by creating new applications based on the open protocols and standards of the NGDS. The NGDS, supported by the U.S. Department of Energys Geothermal Technology Program, is intended to provide access to all types of geothermal data to enable geothermal analysis and widespread public use in an effort to reduce the risk of geothermal energy development [copied from http://www.geothermaldata.org/page/about]. See the long list of data contributors at http://geothermaldata.org/page/data-types-and-contributors#data-contributors.

  7. Geothermal Data from the National Geothermal Data System (NGDS)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    The National Geothermal Data System (NGDS) is a distributed data system providing access to information resources related to geothermal energy from a network of data providers. Data are contributed by academic researchers, private industry, and state and federal agencies. Built on a scalable and open platform through the U.S. Geoscience Information Network (USGIN), NGDS respects data provenance while promoting shared resources.Since NGDS is built using a set of open protocols and standards, relying on the Open Geospatial Consortium (OGC) and International Organization for Standardization (ISO), members of the community may access the data in a variety of proprietary and open-source applications and software. In addition, developers can add functionality to the system by creating new applications based on the open protocols and standards of the NGDS. The NGDS, supported by the U.S. Department of Energy’s Geothermal Technology Program, is intended to provide access to all types of geothermal data to enable geothermal analysis and widespread public use in an effort to reduce the risk of geothermal energy development [copied from http://www.geothermaldata.org/page/about]. See the long list of data contributors at http://geothermaldata.org/page/data-types-and-contributors#data-contributors.

  8. Australia's Geothermal Developments | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Australia's Geothermal Developments Australia's Geothermal Developments Australia presentation at the 2012 Annual Peer Review Meeting. PDF icon gtp2012peerreviewaustralia.pdf More ...

  9. Geothermal Data Development, Collection, and Maintenance | Open...

    Open Energy Info (EERE)

    Data Development, Collection, and Maintenance Jump to: navigation, search Geothermal ARRA Funded Projects for Geothermal Data Development, Collection, and Maintenance Loading...

  10. Sino Icelandic Green Energy Geothermal Development Corporation...

    Open Energy Info (EERE)

    Icelandic Green Energy Geothermal Development Corporation Jump to: navigation, search Name: Sino-Icelandic Green Energy Geothermal Development Corporation Place: China Sector:...

  11. A Technology Roadmap for Strategic Development of Enhanced Geothermal

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Systems | Department of Energy A Technology Roadmap for Strategic Development of Enhanced Geothermal Systems A Technology Roadmap for Strategic Development of Enhanced Geothermal Systems DOE Project Partner AltaRock Energy drills for geothermal energy at the Newberry Volcano EGS Demonstration site, near Bend, Oregon. DOE Project Partner AltaRock Energy drills for geothermal energy at the Newberry Volcano EGS Demonstration site, near Bend, Oregon. This technical paper outlines opportunities

  12. Development of an Improved Cement for Geothermal Wells

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project objectives: Develop a novel, zeolite-containing lightweight, high temperature, high pressure geothermal cement, which will provide operators with an easy to use, flexible cementing system that saves time and simplifies logistics.

  13. Development of Advanced Thermal-Hydrological-Mechanical-Chemical (THMC) Modeling Capabilities for Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    Project objectives: Develop a general framework for effective flow of water, steam and heat in in porous and fractured geothermal formations. Develop a computational module for handling coupled effects of pressure, temperature, and induced rock deformations. Develop a reliable model of heat transfer and fluid flow in fractured rocks.

  14. Enhanced Geothermal Systems Research and Development: Models of Subsurface Chemical Processes Affecting Fluid Flow

    SciTech Connect (OSTI)

    Moller, Nancy; Weare J. H.

    2008-05-29

    Successful exploitation of the vast amount of heat stored beneath the earth’s surface in hydrothermal and fluid-limited, low permeability geothermal resources would greatly expand the Nation’s domestic energy inventory and thereby promote a more secure energy supply, a stronger economy and a cleaner environment. However, a major factor limiting the expanded development of current hydrothermal resources as well as the production of enhanced geothermal systems (EGS) is insufficient knowledge about the chemical processes controlling subsurface fluid flow. With funding from past grants from the DOE geothermal program and other agencies, we successfully developed advanced equation of state (EOS) and simulation technologies that accurately describe the chemistry of geothermal reservoirs and energy production processes via their free energies for wide XTP ranges. Using the specific interaction equations of Pitzer, we showed that our TEQUIL chemical models can correctly simulate behavior (e.g., mineral scaling and saturation ratios, gas break out, brine mixing effects, down hole temperatures and fluid chemical composition, spent brine incompatibilities) within the compositional range (Na-K-Ca-Cl-SO4-CO3-H2O-SiO2-CO2(g)) and temperature range (T < 350°C) associated with many current geothermal energy production sites that produce brines with temperatures below the critical point of water. The goal of research carried out under DOE grant DE-FG36-04GO14300 (10/1/2004-12/31/2007) was to expand the compositional range of our Pitzer-based TEQUIL fluid/rock interaction models to include the important aluminum and silica interactions (T < 350°C). Aluminum is the third most abundant element in the earth’s crust; and, as a constituent of aluminosilicate minerals, it is found in two thirds of the minerals in the earth’s crust. The ability to accurately characterize effects of temperature, fluid mixing and interactions between major rock-forming minerals and hydrothermal and/or injected fluids is critical to predict important chemical behaviors affecting fluid flow, such as mineral precipitation/dissolution reactions. We successfully achieved the project goal and objectives by demonstrating the ability of our modeling technology to correctly predict the complex pH dependent solution chemistry of the Al3+ cation and its hydrolysis species: Al(OH)2+, Al(OH)2+, Al(OH)30, and Al(OH)4- as well as the solubility of common aluminum hydroxide and aluminosilicate minerals in aqueous brines containing components (Na, K, Cl) commonly dominating hydrothermal fluids. In the sodium chloride system, where experimental data for model parameterization are most plentiful, the model extends to 300°C. Determining the stability fields of aluminum species that control the solubility of aluminum-containing minerals as a function of temperature and composition has been a major objective of research in hydrothermal chemistry.

  15. Energy Department Develops Roadmap to Help Spur Geothermal Energy Development

    Broader source: Energy.gov [DOE]

    Geothermal Regulatory Roadmap will help developers navigate regulatory requirements at every level of government to deploy geothermal energy projects.

  16. Geothermal Development Associates | Open Energy Information

    Open Energy Info (EERE)

    Zip: 89502 Sector: Geothermal energy, Services Product: Geothermal power and direct use project development and consulting services Coordinates: 32.944065, -97.578279 Show...

  17. Small geothermal electric systems for remote powering

    SciTech Connect (OSTI)

    Entingh, Daniel J.; Easwaran, Eyob.; McLarty, Lynn

    1994-08-08

    This report describes conditions and costs at which quite small (100 to 1,000 kilowatt) geothermal systems could be used for off-grid powering at remote locations. This is a first step in a larger process of determining locations and conditions at which markets for such systems could be developed. The results suggest that small geothermal systems offer substantial economic and environmental advantages for powering off-grid towns and villages. Geothermal power is most likely to be economic if the system size is 300 kW or greater, down to reservoir temperatures of 100{degree}C. For system sizes smaller than 300 kW, the economics can be favorable if the reservoir temperature is about 120{degree}C or above. Important markets include sites remote from grids in many developing and developed countries. Estimates of geothermal resources in many developing countries are shown.

  18. Geothermal development opportunities in developing countries

    SciTech Connect (OSTI)

    Kenkeremath, D.C.

    1989-11-16

    This report is the proceedings of the Seminar on geothermal development opportunities in developing countries, sponsored by the Geothermal Division of the US Department of Energy and presented by the National Geothermal Association. The overall objectives of the seminar are: (1) Provide sufficient information to the attendees to encourage their interest in undertaking more geothermal projects within selected developing countries, and (2) Demonstrate the technological leadership of US technology and the depth of US industry experience and capabilities to best perform on these projects.

  19. American Geothermal Systems | Open Energy Information

    Open Energy Info (EERE)

    Systems Place: Austin, Texas Sector: Geothermal energy Product: Installer of geothermal heating and cooling technologies, also has a patented water to air heat pump system....

  20. Enhanced Geothermal Systems Roadmap Workshops | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Roadmap Workshops Enhanced Geothermal Systems Roadmap Workshops June 21, 2011 - 2:50pm Addthis Enhanced Geothermal Systems (EGS) are engineered or enhanced reservoirs created to...

  1. Neutron imaging for geothermal energy systems

    SciTech Connect (OSTI)

    Bingham, Philip R; Anovitz, Lawrence {Larry} M; Polsky, Yarom

    2013-01-01

    Geothermal systems extract heat energy from the interior of the earth using a working fluid, typically water. Three components are required for a commercially viable geothermal system: heat, fluid, and permeability. Current commercial electricity production using geothermal energy occurs where the three main components exist naturally. These are called hydrothermal systems. In the US, there is an estimated 30 GW of base load electrical power potential for hydrothermal sites. Next generation geothermal systems, named Enhanced Geothermal Systems (EGS), have an estimated potential of 4500 GW. EGSs lack in-situ fluid, permeability or both. As such, the heat exchange system must be developed or engineered within the rock. The envisioned method for producing permeability in the EGS reservoir is hydraulic fracturing, which is rarely practiced in the geothermal industry, and not well understood for the rocks typically present in geothermal reservoirs. High costs associated with trial and error learning in the field have led to an effort to characterize fluid flow and fracturing mechanisms in the laboratory to better understand how to design and manage EGS reservoirs. Neutron radiography has been investigated for potential use in this characterization. An environmental chamber has been developed that is suitable for reproduction of EGS pressures and temperatures and has been tested for both flow and precipitations studies with success for air/liquid interface imaging and 3D reconstruction of precipitation within the core.

  2. Enhanced Geothermal Systems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Enhanced Geothermal Systems Enhanced Geothermal Systems EGS-2-pager8-1 1.17.28 PM.jpg Steps to Develop Power Production at an EGS Site Step 1: Identify/Characterize a Site Develop a geologic model of a potential site via surface, geologic, geophysical, and remote sensing exploration. Assess the temperature gradient, permeability, in-situ stress directions of the resource, rock mechanical properties, and whether fluid is present. Determine if the necessary characteristics to create an EGS

  3. National Geothermal Data System - DOE Geothermal Data Repository...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    How to Utilize the National Geothermal Data System (NGDS) and Create Your Own Federated Data Network with "Node-In-A-Box" Guidelines for Provision and Interchange of Geothermal ...

  4. Enhanced Geothermal Systems (EGS)- the Future of Geothermal Energy

    Broader source: Energy.gov [DOE]

    While the amount of conventional hydrothermal power worldwide has reached nearly 12 gigawatts, exponentially more geothermal resources can be accessed through next-generation technologies known as enhanced geothermal systems (EGS).

  5. Enhanced Geothermal System Basics | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Geothermal » Enhanced Geothermal System Basics Enhanced Geothermal System Basics A naturally occurring geothermal system, known as Enhanced Geothermal Systems (EGS), is another form of renewable energy. It is defined by three key elements: heat, fluid, and permeability at depth. Essentially, these are engineered reservoirs that produce energy from geothermal resources in areas that are not usually considered economically viable due to a lack of water and/or the ability of that water to pass

  6. Recovery Act. Development and Validation of an Advanced Stimulation Prediction Model for Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Gutierrez, Marte

    2013-12-31

    This research project aims to develop and validate an advanced computer model that can be used in the planning and design of stimulation techniques to create engineered reservoirs for Enhanced Geothermal Systems. The specific objectives of the proposal are to; Develop a true three-dimensional hydro-thermal fracturing simulator that is particularly suited for EGS reservoir creation; Perform laboratory scale model tests of hydraulic fracturing and proppant flow/transport using a polyaxial loading device, and use the laboratory results to test and validate the 3D simulator; Perform discrete element/particulate modeling of proppant transport in hydraulic fractures, and use the results to improve understand of proppant flow and transport; Test and validate the 3D hydro-thermal fracturing simulator against case histories of EGS energy production; and Develop a plan to commercialize the 3D fracturing and proppant flow/transport simulator. The project is expected to yield several specific results and benefits. Major technical products from the proposal include; A true-3D hydro-thermal fracturing computer code that is particularly suited to EGS; Documented results of scale model tests on hydro-thermal fracturing and fracture propping in an analogue crystalline rock; Documented procedures and results of discrete element/particulate modeling of flow and transport of proppants for EGS applications; and Database of monitoring data, with focus of Acoustic Emissions (AE) from lab scale modeling and field case histories of EGS reservoir creation.

  7. Property:GeothermalDevelopmentPhases | Open Energy Information

    Open Energy Info (EERE)

    GeothermalDevelopmentPhases Jump to: navigation, search Property Name GeothermalDevelopmentPhases Property Type Page Pages using the property "GeothermalDevelopmentPhases" Showing...

  8. Geothermal Policymakers Guidebook, State-by-state Developers' Checklist, & Geothermal Developers' Financing Handbook

    Broader source: Energy.gov [DOE]

    Project objectives: Assist policymakers in identifying the niche they can fill to reduce barriers to geothermal energy development. Empower local leaders to develop policies that facilitate growth of geothermal energy and prepare the local workforce to serve geothermal industry needs.

  9. Utility Geothermal Development Strategies | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Utility Geothermal Development Strategies Utility Geothermal Development Strategies The following presentations are from a Webinar conducted on December 9, 2009, that was hosted by the Geothermal Resources Council (GRC) and sponsored by the U.S. Department of Energy Geothermal Technologies Office. The Webinar focused on ways utilities can include or expand cost-effective applications of geothermal technologies in their renewable energy and energy efficiency portfolios, including financing

  10. National Geothermal Data System (NGDS) Geothermal Data: Community Requirements and Information Engineering

    SciTech Connect (OSTI)

    Anderson, Arlene; Blackwell, David; Chickering, Cathy; Boyd, Toni; Horne, Roland; MacKenzie, Matthew; Moore, Joseph; Nickull, Duane; Richard, Stephen; Shevenell, Lisa A.

    2013-10-01

    To satisfy the critical need for geothermal data to advance geothermal energy as a viable renewable energy contender, the U.S. Department of Energy is investing in the development of the National Geothermal Data System (NGDS). This paper outlines efforts among geothermal data providers nationwide to supply cutting edge geo-informatics. NGDS geothermal data acquisition, delivery, and methodology are discussed. In particular, this paper addresses the various types of data required to effectively assess geothermal energy potential and why simple links to existing data are insufficient. To create a platform for ready access by all geothermal stakeholders, the NGDS includes a work plan that addresses data assets and resources of interest to users, a survey of data providers, data content models, and how data will be exchanged and promoted, as well as lessons learned within the geothermal community.

  11. Geothermal Electricity Technology Evaluation Model (GETEM) Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Electricity Technology Evaluation Model (GETEM) Development Geothermal Electricity Technology Evaluation Model (GETEM) Development Project objective: Provide a tool for estimating...

  12. National Geothermal Data System Deployed | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Deployed National Geothermal Data System Deployed In support of the Obama Administration's Open Data Policy, on May 28, 2014, the United States Department of Energy (DOE) announced deployment of the National Geothermal Data System (NGDS), an online, open-source platform that facilitates discovery and use of subsurface geothermal data for research and energy production. This open source platform responds to one of industry's greatest barriers to geothermal development and deployment: the

  13. DEVELOPING THE NATIONAL GEOTHERMAL DATA SYSTEM ADOPTION OF CKAN FOR DOMESTIC & INTERNATIONAL DATA DEPLOYMENT

    SciTech Connect (OSTI)

    Clark, Ryan J.; Kuhmuench, Christoph; Richard, Stephen M.

    2013-01-01

    The National Geothermal Data System (NGDS) De- sign and Testing Team is developing NGDS software currently referred to as the “NGDS Node-In-A-Box”. The software targets organizations or individuals who wish to host at least one of the following: • an online repository containing resources for the NGDS; • an online site for creating metadata to register re- sources with the NGDS • NDGS-conformant Web APIs that enable access to NGDS data (e.g., WMS, WFS, WCS); • NDGS-conformant Web APIs that support dis- covery of NGDS resources via catalog service (e.g. CSW) • a web site that supports discovery and under- standing of NGDS resources A number of different frameworks for development of this online application were reviewed. The NGDS Design and Testing Team determined to use CKAN (http://ckan.org/), because it provides the closest match between out of the box functionality and NGDS node-in-a-box requirements. To achieve the NGDS vision and goals, this software development project has been inititated to provide NGDS data consumers with a highly functional inter- face to access the system, and to ease the burden on data providers who wish to publish data in the sys- tem. It is important to note that this software package constitutes a reference implementation. The NGDS software is based on open standards, which means other server software can make resources available, and other client applications can utilize NGDS data. A number of international organizations have ex- pressed interest in the NGDS approach to data access. The CKAN node implementation can provide a sim- ple path for deploying this technology in other set- tings.

  14. Hawaii's Geothermal Development

    SciTech Connect (OSTI)

    Uemura, Roy T.

    1980-12-01

    On July 2, 1976, an event took place in the desolate area of Puna, on the island of Hawaii, which showed great promise of reducing Hawaii's dependence on fuel oil. This great event was the flashing of Hawaii's first geothermal well which was named HGP-A. The discovery of geothermal energy was a blessing to Hawaii since the electric utilities are dependent upon fuel oil for its own electric generating units. Over 50% of their revenues pay for imported fuel oil. Last year (1979) about $167.1 million left the state to pay for this precious oil. The HGP-A well was drilled to a depth of 6450 feet and the temperature at the bottom of the hole was measured at 676 F, making it one of the hottest wells in the world.

  15. GRC Workshop: The Power of the National Geothermal Data System

    Office of Energy Efficiency and Renewable Energy (EERE)

    Drilling Down: How Legacy and New Research Data Can Advance Geothermal DevelopmentThe Power of the National Geothermal Data System (NGDS) A workshop at the Geothermal Resources Council Annual Meeting in Las Vegas, Nevada Abstract: The National Geothermal Data System's (NGDS) launch in 2014 will provide open access to millions of datasets, sharing technical geothermal-relevant data across the geosciences to propel geothermal development and production forward. By aggregating findings from the Energy Department's RD&D projects and consistent, reliable geological and geothermal information from all 50 states, this free, interactive tool can shorten project development timelines and facilitate scientific discovery and best practices. Stop by our workshop for an overview of how your company can benefit from implementing, and participating in this open-source based, distributed network. To register for the GRC Annual Meeting, visit the GRC Annual Meeting and GEA Geothermal Energy Expo event website.

  16. Development Wells At Raft River Geothermal Area (2004) | Open...

    Open Energy Info (EERE)

    Development Wells At Raft River Geothermal Area (2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Development Wells At Raft River Geothermal...

  17. DOE Awards $20 Million to Develop Geothermal Power Technologies...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Awards 20 Million to Develop Geothermal Power Technologies DOE Awards 20 Million to Develop Geothermal Power Technologies September 22, 2010 - 10:48am Addthis Power of geothermal ...

  18. A Roadmap for Strategic Development of Geothermal Exploration...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    A Roadmap for Strategic Development of Geothermal Exploration Technologies A Roadmap for Strategic Development of Geothermal Exploration Technologies The Dixie Valley Geothermal ...

  19. Enhanced Geothermal System (EGS) Fact Sheet | Department of Energy

    Energy Savers [EERE]

    Enhanced Geothermal System (EGS) Fact Sheet Enhanced Geothermal System (EGS) Fact Sheet Overview of Enhanced Geothermal Systems. PDF icon egsbasics.pdf More Documents &...

  20. Development Wells At Coso Geothermal Area (1985) | Open Energy...

    Open Energy Info (EERE)

    Coso Geothermal Area (1985) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Development Wells At Coso Geothermal Area (1985) Exploration Activity...

  1. Energy Department Develops Regulatory Roadmap to Spur Geothermal Energy Development

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Energy Department today issued a Geothermal Regulatory Roadmap that will help developers navigate regulatory requirements at every level of government to deploy geothermal energy projects.

  2. Enhanced Geothermal Systems Webinar | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Enhanced Geothermal Systems Webinar Enhanced Geothermal Systems Webinar The following presentations are from a Webinar conducted on July 15, 2009, that was hosted by the Geothermal Resources Council (GRC) and sponsored by the American Public Power Association, National Rural Electric Cooperative Associate, Western Area Power Administration, and U.S. Department of Energy Geothermal Technologies Office. The Webinar covered topics including federal enhanced geothermal systems (EGS) activities and

  3. Geothermal reservoirs in hydrothermal convection systems

    SciTech Connect (OSTI)

    Sorey, M.L.

    1982-01-01

    Geothermal reservoirs commonly exist in hydrothermal convection systems involving fluid circulation downward in areas of recharge and upwards in areas of discharge. Because such reservoirs are not isolated from their surroundings, the nature of thermal and hydrologic connections with the rest of the system may have significant effects on the natural state of the reservoir and on its response to development. Conditions observed at numerous developed and undeveloped geothermal fields are discussed with respect to a basic model of the discharge portion of an active hydrothermal convection system. Effects of reservoir development on surficial discharge of thermal fluid are also delineated.

  4. Geothermal Workforce Education Development and Retention

    Broader source: Energy.gov [DOE]

    Formation of a National Geothermal Institute to develop the human resources that will be needed to transform and grow the U.S. energy infrastructure to achieve the utilization of Americas vast geothermal resource base.

  5. Geothermal Development Job Types and Impacts

    Broader source: Energy.gov [DOE]

    Development of geothermal power plants and direct-use applications creates a variety of jobs. And the resulting job creation and economic activity within the geothermal industry positively impacts...

  6. BLM Increases Acreage for Geothermal Development | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    for Geothermal Development December 29, 2008 - 2:11pm Addthis The U.S. Bureau of Land Management (BLM) earlier this month leased another 146,339 acres of land for geothermal...

  7. Large Scale Geothermal Exchange System for Residential, Office...

    Open Energy Info (EERE)

    cool the project. To develop the geothermal exchange system, engineers at Madison-based Sustainable Engineering Group (SEG), collaborated with architects at Milwaukee-based...

  8. First Commercial Success for Enhanced Geothermal Systems (EGS...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Commercial Success for Enhanced Geothermal Systems (EGS) Spells Exponential Growth for Geothermal Energy First Commercial Success for Enhanced Geothermal Systems (EGS) Spells ...

  9. First Commercial Success for Enhanced Geothermal Systems (EGS...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    First Commercial Success for Enhanced Geothermal Systems (EGS) Spells Exponential Growth for Geothermal Energy First Commercial Success for Enhanced Geothermal Systems (EGS) Spells ...

  10. Imperial County geothermal development annual meeting: summary

    SciTech Connect (OSTI)

    Not Available

    1983-01-01

    All phases of current geothermal development in Imperial County are discussed and future plans for development are reviewed. Topics covered include: Heber status update, Heber binary project, direct geothermal use for high-fructose corn sweetener production, update on county planning activities, Brawley and Salton Sea facility status, status of Imperial County projects, status of South Brawley Prospect 1983, Niland geothermal energy program, recent and pending changes in federal procedures/organizations, plant indicators of geothermal fluid on East Mesa, state lands activities in Imperial County, environmental interests in Imperial County, offshore exploration, strategic metals in geothermal fluids rebuilding of East Mesa Power Plant, direct use geothermal potential for Calipatria industrial Park, the Audubon Society case, status report of the Cerro Prieto geothermal field, East Brawley Prospect, and precision gravity survey at Heber and Cerro Prieto geothermal fields. (MHR)

  11. A Roadmap for Strategic Development of Geothermal Exploration Technologies

    SciTech Connect (OSTI)

    Phillips, Benjamin R.; Ziagos, John; Thorsteinsson, Hildigunnur; Hass, Eric

    2013-02-13

    Characterizing productive geothermal systems is challenging yet critical to identify and develop an estimated 30 gigawatts electric (GWe) of undiscovered hydrothermal resources in the western U.S. This paper, undertaken by the U.S. Department of Energy’s Geothermal Technologies Office (GTO), summarizes needs and technical pathways that target the key geothermal signatures of temperature, permeability, and fluid content, and develops the time evolution of these pathways, tying in past and current GTO exploration Research and Development (R&D) projects. Beginning on a five-year timescale and projecting out to 2030, the paper assesses technologies that could accelerate the confirmation of 30 GWe. The resulting structure forms the basis for a Geothermal Exploration Technologies Roadmap, a strategic development plan to help guide GTO R&D investments that will lower the risk and cost of geothermal prospect identification. This roadmap is currently open for public comment. Send your comments to geothermal@ee.doe.gov.

  12. El Centro/Superstition Hills Geothermal Project (2) | Open Energy...

    Open Energy Info (EERE)

    County, NV Geothermal Area Geothermal Region Geothermal Project Profile Developer Navy Geothermal Program Project Type Hydrothermal Systems GEA Development Phase Phase II -...

  13. Demonstration of an Enhanced Geothermal System at the Northwest...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    California; 2010 Geothermal Technology Program Peer Review Report Demonstration of an Enhanced Geothermal System at the Northwest Geysers Geothermal Field, California; 2010...

  14. Geothermal Developers' Checklist | Open Energy Information

    Open Energy Info (EERE)

    Developers' Checklist Jump to: navigation, search Tool Summary Name: Geothermal Developers' Checklist AgencyCompany Organization: National Renewable Energy Laboratory Partner:...

  15. track 3: enhanced geothermal systems (EGS) | geothermal 2015 peer review

    Broader source: Energy.gov [DOE]

    The Energy Department pursues research in transformative science and engineering that the private sector is not financially or technically equipped to undertake. At the 2015 Peer Review, awardees in the Geothermal Technologies Office portfolio presented fifty three technical project presentations on enhanced geothermal systems technologies.

  16. Geographic Information Systems- Tools For Geotherm Exploration...

    Open Energy Info (EERE)

    Information Systems- Tools For Geotherm Exploration, Tracers Data Analysis, And Enhanced Data Distribution, Visualization, And Management Abstract Geographic information...

  17. Recovery act. Development of design and simulation tool for hybrid geothermal heat pump system

    SciTech Connect (OSTI)

    Wang, Shaojie; Ellis, Dan

    2014-05-29

    The ground source heat pump (GSHP) system is one of the most energy efficient HVAC technologies in the current market. However, the heat imbalance may degrade the ability of the ground loop heat exchanger (GLHX) to absorb or reject heat. The hybrid GSHP system, which combines a geothermal well field with a supplemental boiler or cooling tower, can balance the loads imposed on the ground loop heat exchangers to minimize its size while retaining superior energy efficiency. This paper presents a recent simulation-based study with an intention to compare multiple common control strategies used in hybrid GSHP systems, including fixed setpoint, outside air reset, load reset, and wetbulb reset. A small office in Oklahoma City conditioned by a hybrid GSHP system was simulated with the latest version of eQUEST 3.7[1]. The simulation results reveal that the hybrid GSHP system has the excellent capability to meet the cooling and heating setpoints during the occupied hours, balance thermal loads on the ground loop, as well as improve the thermal comfort of the occupants with the undersized well field.

  18. Funding Opportunity: Technology Advancement for Rapid Development of Geothermal Resources in the U.S.

    Broader source: Energy.gov [DOE]

    In early June 2011, the U.S. Department of Energy's Geothermal Technologies Program (GTP) intends to issue a Funding Opportunity Announcement to expand its partnership with the geothermal community on geothermal systems research and development throughout the United States in order to support GTP's goal of lowering the cost of geothermal energy to 6 ¢/kWh.

  19. Enhanced Geothermal Systems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    About the Geothermal Technologies Office » Enhanced Geothermal Systems Enhanced Geothermal Systems EGS R&amp;D Projects EGS R&D Projects The AltaRock Energy EGS demonstration project at Newberry Volcano, Oregon, leverages DOE funds to demonstrate engineered geothermal systems in a green field setting. Image Source: Elisabet Metcalfe Read more EGS Program Highlight EGS Program Highlight Armed with a wealth of data and new data analysis and integration techniques, images of the subsurface

  20. Water Use in the Development and Operations of Geothermal Power Plants |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Water Use in the Development and Operations of Geothermal Power Plants Water Use in the Development and Operations of Geothermal Power Plants This report summarizes what is currently known about the life cycle water requirements of geothermal electric power-generating systems and the water quality of geothermal waters. It is part of a larger effort to compare the life cycle impacts of large-scale geothermal electricity generation with other power generation technologies.

  1. Full Reviews: Enhanced Geothermal Systems | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Enhanced Geothermal Systems. Bradys EGS Project Zvi Krieger, Ormat Nevada Inc. Project Presentation | Peer Reviewer Comments Concept Testing and Development at the Raft River Geothermal Field, Idaho Joseph Moore, University of Utah Project Presentation | Peer Reviewer Comments Desert Peak EGS Project Ezra Zemach, Ormat Nevada Inc. Project Presentation | Peer Reviewer Comments Creation of an Engineered Geothermal System through Hydraulic and Thermal Stimulation Peter Rose, University of Utah

  2. An Evaluation of Enhanced Geothermal Systems Technology

    SciTech Connect (OSTI)

    Jelacic, Allan; Fortuna, Raymond; LaSala, Raymond; Nathwani, Jay; Nix, Gerald; Visser, Charles; Green, Bruce; Renner, Joel; Blankenship, Douglas; Kennedy, Mack; Bruton, Carol

    2008-04-01

    This 2008 document presents the results of an eight-month study by the Department of Energy (DOE) and its support staff at the national laboratories concerning the technological requirements to commercialize a new geothermal technology, Enhanced Geothermal Systems (EGS).

  3. Numerical Modeling Of Basin And Range Geothermal Systems | Open...

    Open Energy Info (EERE)

    for extensional geothermal systems that include structure, heat input, and permeability distribution have been established using numerical models. Extensional geothermal...

  4. Geographic Information System At Lightning Dock Geothermal Area...

    Open Energy Info (EERE)

    navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic Information System At Lightning Dock Geothermal Area (Getman, 2014) Exploration Activity...

  5. Boise geothermal district heating system

    SciTech Connect (OSTI)

    Hanson, P.J.

    1985-10-01

    This document describes the Boise geothermal district heating project from preliminary feasibility studies completed in 1979 to a fully operational system by 1983. The report includes information about the two local governments that participated in the project - the City of Boise, Idaho and the Boise Warm Springs Water District. It also discusses the federal funding sources; the financial studies; the feasibility studies conducted; the general system planning and design; design of detailed system components; the legal issues involved in production; geological analysis of the resource area; distribution and disposal; the program to market system services; and the methods of retrofitting buildings to use geothermal hot water for space heating. Technically this report describes the Boise City district heating system based on 170/sup 0/F water, a 4000 gpm production system, a 41,000 foot pipeline system, and system economies. Comparable data are also provided for the Boise Warm Springs Water District. 62 figs., 31 tabs.

  6. Energy Department Develops Roadmap to Help Spur Geothermal Energy...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Develops Roadmap to Help Spur Geothermal Energy Development Energy Department Develops Roadmap to Help Spur Geothermal Energy Development August 22, 2013 - 12:00am Addthis The ...

  7. Induced seismicity associated with enhanced geothermal system

    SciTech Connect (OSTI)

    Majer, Ernest; Majer, Ernest L.; Baria, Roy; Stark, Mitch; Oates, Stephen; Bommer, Julian; Smith, Bill; Asanuma, Hiroshi

    2006-09-26

    Enhanced Geothermal Systems (EGS) offer the potential to significantly add to the world energy inventory. As with any development of new technology, some aspects of the technology has been accepted by the general public, but some have not yet been accepted and await further clarification before such acceptance is possible. One of the issues associated with EGS is the role of microseismicity during the creation of the underground reservoir and the subsequent extraction of the energy. The primary objectives of this white paper are to present an up-to-date review of the state of knowledge about induced seismicity during the creation and operation of enhanced geothermal systems, and to point out the gaps in knowledge that if addressed will allow an improved understanding of the mechanisms generating the events as well as serve as a basis to develop successful protocols for monitoring and addressing community issues associated with such induced seismicity. The information was collected though literature searches as well as convening three workshops to gather information from a wide audience. Although microseismicity has been associated with the development of production and injection operations in a variety of geothermal regions, there have been no or few adverse physical effects on the operations or on surrounding communities. Still, there is public concern over the possible amount and magnitude of the seismicity associated with current and future EGS operations. It is pointed out that microseismicity has been successfully dealt with in a variety of non-geothermal as well as geothermal environments. Several case histories are also presented to illustrate a variety of technical and public acceptance issues. It is concluded that EGS Induced seismicity need not pose any threat to the development of geothermal resources if community issues are properly handled. In fact, induced seismicity provides benefits because it can be used as a monitoring tool to understand the effectiveness of the EGS operations and shed light on the mechanics of the reservoir.

  8. Conductive, Intracratonic Play Geothermal Development in the...

    Open Energy Info (EERE)

    in the Paris Basin Author Miklos Antics Conference IGA Workshop on Developing Best Practice for Geothermal Exploration and ResourceReserve Classification; Essen,...

  9. Geothermal greenhouse development | Open Energy Information

    Open Energy Info (EERE)

    LibraryAdd to library Journal Article: Geothermal greenhouse development Author P. J. Lienau Published Journal Geo-Heat Center, 1990 DOI Not Provided Check for DOI...

  10. What is an Enhanced Geothermal System (EGS)? Fact Sheet

    SciTech Connect (OSTI)

    U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy

    2012-09-14

    This Geothermal Technologies Office fact sheet explains how engineered geothermal reservoirs called Enhanced Geothermal Systems are used to produce energy from geothermal resources that are otherwise not economical due to a lack of fluid and/or permeability.

  11. Water Use in the Development and Operations of Geothermal Power Plants |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Operations of Geothermal Power Plants Water Use in the Development and Operations of Geothermal Power Plants This report summarizes what is currently known about the life cycle water requirements of geothermal electric power-generating systems and the water quality of geothermal waters. It is part of a larger effort to compare the life cycle impacts of large-scale geothermal electricity generation with other power generation technologies. PDF icon

  12. Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Jeanloz, R.; Stone, H.

    2013-12-31

    DOE, through the Geothermal Technologies Office (GTO) within the Office of Energy Efficiency and Renewable Energy, requested this study, identifying a focus on: i) assessment of technologies and approaches for subsurface imaging and characterization so as to be able to validate EGS opportunities, and ii) assessment of approaches toward creating sites for EGS, including science and engineering to enhance permeability and increase the recovery factor. Two days of briefings provided in-depth discussion of a wide range of themes and challenges in EGS, and represented perspectives from industry, government laboratories and university researchers. JASON also contacted colleagues from universities, government labs and industry in further conversations to learn the state of the field and potential technologies relevant to EGS.

  13. National Geothermal Data System: Transforming the Discovery, Access, and Analytics of Data for Geothermal Exploration

    SciTech Connect (OSTI)

    Patten, Kim

    2013-05-01

    Compendium of Papers from the 38th Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California February 11-13, 2013 The National Geothermal Data System (NGDS) is a distributed, interoperable network of data collected from state geological surveys across all fifty states and the nations leading academic geothermal centers. The system serves as a platform for sharing consistent, reliable, geothermal-relevant technical data with users of all types, while supplying tools relevant for their work. As aggregated data supports new scientific findings, this content-rich linked data ultimately broadens the pool of knowledge available to promote discovery and development of commercial-scale geothermal energy production. Most of the up-front risks associated with geothermal development stem from exploration and characterization of subsurface resources. Wider access to distributed data will, therefore, result in lower costs for geothermal development. NGDS is on track to become fully operational by 2014 and will provide a platform for custom applications for accessing geothermal relevant data in the U.S. and abroad. It is being built on the U.S. Geoscience Information Network (USGIN) data integration framework to promote interoperability across the Earth sciences community. The basic structure of the NGDS employs state-of-the art informatics to advance geothermal knowledge. The following four papers comprising this Open-File Report are a compendium of presentations, from the 38th Annual Workshop on Geothermal Reservoir Engineering, taking place February 11-13, 2013 at Stanford University, Stanford, California. NGDS Geothermal Data Domain: Assessment of Geothermal Community Data Needs, outlines the efforts of a set of nationwide data providers to supply data for the NGDS. In particular, data acquisition, delivery, and methodology are discussed. The paper addresses the various types of data and metadata required and why simple links to existing data are insufficient for promoting geothermal exploration. Authors of this paper are Arlene Anderson, US DOE Geothermal Technologies Office, David Blackwell, Southern Methodist University (SMU), Cathy Chickering (SMU), Toni Boyd, Oregon Institute of Technologys GeoHeat Center, Roland Horne, Stanford University, Matthew MacKenzie, Uberity, Joe Moore, University of Utah, Duane Nickull, Uberity, Stephen Richard, Arizona Geological Survey, and Lisa Shevenell, University of Nevada, Reno. NGDS User Centered Design: Meeting the Needs of the Geothermal Community, discusses the user- centered design approach taken in the development of a user interface solution for the NGDS. The development process is research based, highly collaborative, and incorporates state-of-the-art practices to ensure a quality user interface for the widest and greatest utility. Authors of this paper are Harold Blackman, Boise State University, Suzanne Boyd, Anthro-Tech, Kim Patten, Arizona Geological Survey, and Sam Zheng, Siemens Corporate Research. Fueling Innovation and Adoption by Sharing Data on the DOE Geothermal Data Repository Node on the National Geothermal Data System, describes the motivation behind the development of the Geothermal Data Repository (GDR) and its role in the NGDS. This includes the benefits of using the GDR to share geothermal data of all types and DOEs data submission process. Authors of this paper are Jon Weers, National Renewable Energy Laboratory and Arlene Anderson, US DOE Geothermal Technologies Office. Finally, Developing the NGDS Adoption of CKAN for Domestic & International Data Deployment, provides an overview of the Node-In-A-Box software package designed to provide data consumers with a highly functional interface to access the system, and to ease the burden on data providers who wish to publish data in the system. It is important to note that this software package constitutes a reference implementation and that the NGDS architecture is based on open standards, which means other server software can make resources available, and other client applications can utilize NGDS data. Authors of this paper are Ryan Clark, Arizona Geological Survey (AZGS), Christoph Kuhmuench, Siemens Corporate Research, and Stephen Richard, AZGS.

  14. Development of Exploration Methods for Engineered Geothermal System through Integrated Geoscience Interpretation

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. This project will deploy, test and calibrate Non-invasive EGS Exploration Methodology integrating geoscience data to predict temperature and rock type at a scale of 5km x 5km at depths of 1-5km.

  15. EIS-0298: Telephone Flat Geothermal Development Project

    Broader source: Energy.gov [DOE]

    This EIS is for a Plan of Operation (POO) for Development and Production; and for a POO for Utilization and Disposal for a proposed geothermal development project, including: a power plant, geothermal production and injection wellfield, ancillary facilities, and transmission line on the Modoc National Forest in Siskiyou and Modoc Counties, California.

  16. National Geothermal Data System Architecture Design, Testing...

    Broader source: Energy.gov (indexed) [DOE]

    To create the National Geothermal Data System (NGDS) comprised of a core and distributed network of databases and data sites that will comprise a federated system for acquisition,...

  17. Conceptual Models of Geothermal Systems - Introduction | Open...

    Open Energy Info (EERE)

    of any type of geothermal system is a clear definition and understanding of the nature and characteristics of the system in question. This is best achieved through the...

  18. Shaanxi Geothermal Energy Development Co Ltd CGCO | Open Energy...

    Open Energy Info (EERE)

    Geothermal Energy Development Co Ltd CGCO Jump to: navigation, search Name: Shaanxi Geothermal Energy Development Co Ltd (CGCO) Place: Xianyang, Shaanxi Province, China Zip: 712000...

  19. Shaanxi Green Energy Geothermal Development Co Ltd | Open Energy...

    Open Energy Info (EERE)

    Energy Geothermal Development Co Ltd Jump to: navigation, search Name: Shaanxi Green Energy Geothermal Development Co Ltd Place: Xianyang, Shaanxi Province, China Sector:...

  20. Water Use in the Development and Operations of Geothermal Power...

    Energy Savers [EERE]

    Water Use in the Development and Operations of Geothermal Power Plants Water Use in the Development and Operations of Geothermal Power Plants This report summarizes what is ...

  1. EA-1746: Blue Mountain Geothermal Development Project, Humboldt...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    46: Blue Mountain Geothermal Development Project, Humboldt & Pershing County, NV EA-1746: Blue Mountain Geothermal Development Project, Humboldt & Pershing County, NV December 3,...

  2. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Cover Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Cover The Geothermal Technologies Program Multi-Year Research, Development and ...

  3. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Foreword Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Foreword The Geothermal Technologies Program Multi-Year Research, Development and ...

  4. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Multi-Year Research, Development and Demonstration Plan Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan The Geothermal Technologies Program ...

  5. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Appendices Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Appendices The Geothermal Technologies Program Multi-Year Research, Development ...

  6. Water Use in the Development and Operations of Geothermal Power...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Water Use in the Development and Operations of Geothermal Power Plants Water Use in the Development and Operations of Geothermal Power Plants This report summarizes what is...

  7. How an Enhanced Geothermal System Works | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    an Enhanced Geothermal System Works How an Enhanced Geothermal System Works The Potential Enhanced Geothermal Systems (EGS), also sometimes called engineered geothermal systems, offer great potential for dramatically expanding the use of geothermal energy. Present geothermal power generation comes from hydrothermal reservoirs, and is somewhat limited in geographic application to specific ideal places in the western U.S. This represents the 'low-hanging fruit' of geothermal energy potential. EGS

  8. track 1: systems analysis | geothermal 2015 peer review | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy 1: systems analysis | geothermal 2015 peer review track 1: systems analysis | geothermal 2015 peer review At the 2015 Peer Review in May, the Energy Department's Geothermal Technologies Office (GTO) introduced nine Energy Department-funded Systems Analysis projects for review. Research teams pursue and evaluate vital geothermal technical data that can help to locate geothermal reservoirs, target drilling, and tap geothermal systems for energy production. Innovative geothermal tools

  9. Regulatory Impacts to Geothermal Development

    Broader source: Energy.gov [DOE]

    Presented at the Technology Planning Workshop for Low-Temperature, Coproduced, and Geopressured Geothermal Energy, July 13-14, 2010, Golden, Colorado

  10. Geothermal pipeline: Progress and development update, geothermal program monitor

    SciTech Connect (OSTI)

    1995-02-01

    This paper is a progress and development update describing three projects in the U.S. which involve the use of geothermal energy and ground-source heat pumps. The first project is located at Fort Polk Army Base in Louisiana. Four thousand government housing units are being retrofitted with efficient ground-soured near Bend, Oregon.

  11. State Geological Survey Contributions to the National Geothermal Data System

    Broader source: Energy.gov [DOE]

    Project objectives: Deploy and populate the National Geothermal Data System (NGDS) with state-specific data by creating a national, sustainable, distributed, interoperable network of state geological survey-based data providers that will develop, collect, serve, and maintain geothermal-relevant data that operates as an integral compliant component of NGDS.

  12. White Mountain Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Location County Geothermal Area Geothermal Region Geothermal Project Profile Developer Eureka Green Systems Project Type Hydrothermal GEA Development Phase Phase II - Resource...

  13. DOE Awards $20 Million to Develop Geothermal Power Technologies |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Awards $20 Million to Develop Geothermal Power Technologies DOE Awards $20 Million to Develop Geothermal Power Technologies September 22, 2010 - 10:48am Addthis Power of geothermal power units. DOE announced on September 15 its selection of seven projects to research, develop, and demonstrate cutting-edge geothermal energy technologies involving low-temperature fluids, geothermal fluids recovered from oil and gas wells, and highly pressurized geothermal fluids. Today's

  14. "How Legacy and New Research Data Can Advance Geothermal Development"

    Broader source: Energy.gov [DOE]

    The National Geothermal Data System (NGDS) is a free online digital data network that will help propel geothermal projects and RD&D forward by providing new ways to discover, access, map, and analyze geothermal data.

  15. Concept Testing and Development at the Raft River Geothermal...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    DOE 2010 Geothermal Technologies Program Peer Review PDF icon egs007moore.pdf More Documents & Publications Demonstration of an Enhanced Geothermal System at the Northwest ...

  16. Enhanced Geothermal Systems | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    The AltaRock Energy EGS demonstration project at Newberry Volcano, Oregon, leverages DOE funds to demonstrate engineered geothermal systems in a green field setting. Source:...

  17. Water Use in the Development and Operation of Geothermal Power...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Operation of Geothermal Power Plants Water Use in the Development and Operation of Geothermal Power Plants This report summarizes what is currently known about the life cycle water ...

  18. Development Wells At Long Valley Caldera Geothermal Area (Associates...

    Open Energy Info (EERE)

    Associates, 1987) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Development Wells At Long Valley Caldera Geothermal Area (Associates, 1987)...

  19. Development Wells At Fenton Hill HDR Geothermal Area (Dreesen...

    Open Energy Info (EERE)

    Dreesen, Et Al., 1987) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Development Wells At Fenton Hill HDR Geothermal Area (Dreesen, Et Al.,...

  20. New developments in Colorado geothermal energy projects | Open...

    Open Energy Info (EERE)

    library Journal Article: New developments in Colorado geothermal energy projects Authors J. Held and F. Henderson Published Journal Geothermal Resources Council- Transactions,...

  1. Geothermal Resource Development Needs in New Mexico | Open Energy...

    Open Energy Info (EERE)

    to library Report: Geothermal Resource Development Needs in New Mexico Author D.J. Fleischman Published Geothermal Energy Association, 2006 DOI Not Provided Check for DOI...

  2. ALASKA ENERGY AUTHORITY Alaska Geothermal Development: A Plan...

    Open Energy Info (EERE)

    ALASKA ENERGY AUTHORITY Alaska Geothermal Development: A Plan Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: ALASKA ENERGY AUTHORITY Alaska Geothermal...

  3. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Executive Summary Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Executive Summary The Geothermal Technologies Program Multi-Year ...

  4. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Program Analysis Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Program Analysis The Geothermal Technologies Program Multi-Year Research, ...

  5. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Management Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Program Management The Geothermal Technologies Program Multi-Year Research, ...

  6. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Benefits Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Program Benefits The Geothermal Technologies Program Multi-Year Research, ...

  7. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Coordination Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Program Coordination The Geothermal Technologies Program Multi-Year Research, ...

  8. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Challenges Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Program Challenges The Geothermal Technologies Program Multi-Year Research, ...

  9. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Table of Contents Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Table of Contents The Geothermal Technologies Program Multi-Year ...

  10. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Introduction Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Introduction The Geothermal Technologies Program Multi-Year Research, ...

  11. Geothermal Technologies Program Multi-Year Research, Development...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Technical Plan Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Technical Plan The Geothermal Technologies Program Multi-Year Research, ...

  12. National Geothermal Data System (NGDS) Initiative | Department...

    Broader source: Energy.gov (indexed) [DOE]

    Determine geothermal potential * Guide exploration and development * Make data-driven ... In addition, all DOE-funded projects are required to register their data in the NGDS, ...

  13. Enhanced Geothermal System (EGS) Fact Sheet

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    While advanced EGS technologies are young and still under development, EGS has been ... of Technology (MIT). 2006. The future of geothermal energy. Cambridge, Massachusetts. ...

  14. Tectonic & Structural Controls of Great Basin Geothermal Systems:

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Developing Successful Exploration Strategies | Department of Energy Tectonic & Structural Controls of Great Basin Geothermal Systems: Developing Successful Exploration Strategies Tectonic & Structural Controls of Great Basin Geothermal Systems: Developing Successful Exploration Strategies Keeping Nevada in Hot Water presentation by James Faulds of University of Nevada, Reno at the 2013 Annual Peer Review meeting in Colorado. PDF icon nevada_hotwater_peerreview2013.pdf More Documents

  15. EA-1746: Blue Mountain Geothermal Development Project, Humboldt & Pershing

    Energy Savers [EERE]

    County, NV | Department of Energy 46: Blue Mountain Geothermal Development Project, Humboldt & Pershing County, NV EA-1746: Blue Mountain Geothermal Development Project, Humboldt & Pershing County, NV December 3, 2007 EA-1746: Final Environmental Assessment Blue Mountain Geothermal Development Project April 26, 2010 EA-1746: Finding of No Significant Impact Blue Mountain Geothermal Development Project, Humboldt and Pershing Counties, Nevada

  16. National Geothermal Data System (NGDS) Fact Sheet | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    National Geothermal Data System (NGDS) Fact Sheet National Geothermal Data System (NGDS) Fact Sheet Industry has named one of the largest barriers to widespread adoption of ...

  17. Numerical Modelling of Geothermal Systems a Short Introduction...

    Open Energy Info (EERE)

    Modelling of Geothermal Systems a Short Introduction Jump to: navigation, search OpenEI Reference LibraryAdd to library General: Numerical Modelling of Geothermal Systems a Short...

  18. Enhanced Geothermal Systems (EGS) comparing water with CO2 as...

    Office of Scientific and Technical Information (OSTI)

    Enhanced Geothermal Systems (EGS) comparing water with CO2 as heattransmission fluids Citation Details In-Document Search Title: Enhanced Geothermal Systems (EGS) comparing water ...

  19. Active Geothermal Systems And Associated Gold Deposits In The...

    Open Energy Info (EERE)

    Geothermal Systems And Associated Gold Deposits In The Great Basin Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Active Geothermal Systems...

  20. Geochemical characterization of geothermal systems in the Great...

    Open Energy Info (EERE)

    Basin. Development of this database is one of the first steps in understanding the nature of geothermal systems in the Great Basin. Of particular importance in the Great Basin...

  1. Geothermal policy development program: expediting the local geothermal permitting process

    SciTech Connect (OSTI)

    Not Available

    1981-07-01

    For a number of years, concerns have been raised about the length of time and the complexity involved in obtaining required permits in order to develop the geothermal resource at the Geysers. Perhaps the most important factor is jurisdiction. At the Geysers, all three levels of government - local, state, and federal - exercise significant authority over various aspects of geothermal development. In addition, several agencies within each governmental level play an active role in the permitting process. The present study is concerned primarily with the local permitting process, and the ways in which this process could be expedited. This report begins by looking at the local role in the overall permitting process, and then reviews the findings and conclusions that have been reached in other studies of the problem. This is followed by a case study evaluation of recent permitting experience in the four Geysers-Calistoga KGRA counties, and the report concludes by outlining several approaches to expediting the local permitting process.

  2. Geothermal Energy Research Development and Demonstration Program

    SciTech Connect (OSTI)

    Not Available

    1980-06-01

    The Federal program's goal, strategy, plans, and achievements are summarized. In addition, geothermal development by state and local governments and, where available, by the private sector is described. (MHR)

  3. Iowa: Geothermal System Creates Jobs, Reduces Emissions in Rural...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    geothermal wells in order to install a closed-loop geothermal heating and cooling system. ... The district geothermal system is designed to be scalable, so that more buildings can be ...

  4. EERE Success Story-Iowa: Geothermal System Creates Jobs, Reduces...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    geothermal wells in order to install a closed-loop geothermal heating and cooling system. ... The district geothermal system is designed to be scalable, so that more buildings can be ...

  5. Updating the Classification of Geothermal Resources

    Broader source: Energy.gov [DOE]

    USGS is working with DOE, the geothermal industry, and academic partners to develop a new geothermal resource classification system.

  6. Updating the Classification of Geothermal Resources- Presentation

    Broader source: Energy.gov [DOE]

    USGS is working with DOE, the geothermal industry, and academic partners to develop a new geothermal resource classification system.

  7. Geographic Information System At Dixie Valley Geothermal Area...

    Open Energy Info (EERE)

    Nash & D., 1997) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Geographic Information System At Dixie Valley Geothermal Area (Nash & D., 1997)...

  8. Geology and alteration of the Raft River geothermal system, Idaho...

    Open Energy Info (EERE)

    Raft River geothermal system, Idaho Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: Geology and alteration of the Raft River geothermal...

  9. Fracture Characterization in Enhanced Geothermal Systems by Wellbore...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Characterization in Enhanced Geothermal Systems by Wellbore and Reservoir Analysis; 2010 Geothermal Technology Program Peer Review Report Fracture Characterization in Enhanced ...

  10. Classification of Geothermal Systems: A Possible Scheme | Open...

    Open Energy Info (EERE)

    of Geothermal Systems: A Possible Scheme Abstract Abstract unavailable. Author Subir K. Sanyal Conference Thirtieth Workshop on Geothermal Reservoir Engineering; Stanford,...

  11. DOE and Partners Test Enhanced Geothermal Systems Technologies

    Broader source: Energy.gov [DOE]

    DOE has embarked on a project with a number of partners to test Enhanced Geothermal Systems (EGS) technologies at a commercial geothermal power facility near Reno, Nevada.

  12. GEOTHERMAL ENERGY DEVELOPMENT PAUL KRUGER

    Office of Scientific and Technical Information (OSTI)

    ... f i c i e n t f r a c t u r e area, the creation of additional fracture area by thermal ... In the evaluation of a b e n e f i t - r i s k analysis, geothermal energy is expected t o ...

  13. Demonstration of an Enhanced Geothermal System at the Northwest Geysers

    Broader source: Energy.gov (indexed) [DOE]

    Geothermal Resources | Department of Energy Project objectives: Demonstrate a 1 megawatt Variable Phase Turbine and Variable Phase Cycle with low temperature brine. PDF icon low_hays_variable_phase_turbine.pdf More Documents & Publications track 1: Low Temp | geothermal 2015 peer review track 3: enhanced geothermal systems (EGS) | geothermal 2015 peer review Optimization of hybrid-water/air-cooled condenser in an enhanced turbine geothermal ORC system Geothermal Field, California |

  14. A Roadmap for Strategic Development of Geothermal Exploration Technologies

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    | Department of Energy A Roadmap for Strategic Development of Geothermal Exploration Technologies A Roadmap for Strategic Development of Geothermal Exploration Technologies The Dixie Valley Geothermal Plant in Nevada produces 60 MW of electricity. The Dixie Valley Geothermal Plant in Nevada produces 60 MW of electricity. A technology roadmap paper on geothermal exploration technologies. PDF icon exploration_technical_roadmap2013.pdf More Documents & Publications A Roadmap for Strategic

  15. Development of Design and Simulation Tool for Hybrid Geothermal Heat Pump System

    Broader source: Energy.gov [DOE]

    This project will expand Expand eQUEST, a building energy analysis software with latest implementation of DOE-2, for simulations of HGSHP systems and improve its existing simulation capabilities for ordinary GSHP systems.

  16. Basic research needed for the development of geothermal energy

    SciTech Connect (OSTI)

    Aamodt, R.L.; Riecker, R.E.

    1980-10-01

    Basic research needed to facilitate development of geothermal energy is identified. An attempt has been made to make the report representative of the ideas of productive workers in the field. The present state of knowledge of geothermal energy is presented and then specific recommendations for further research, with status and priorities, are listed. Discussion is limited to a small number of applicable concepts, namely: origin of geothermal flux; transport of geothermal energy; geothermal reservoirs; rock-water interactions, and geophysical and geochemical exploration.

  17. Enhanced Geothermal Systems (EGS) R&D Program: US Geothermal Resources Review and Needs Assessment

    SciTech Connect (OSTI)

    Entingh, Dan; McLarty, Lynn

    2000-11-30

    The purpose of this report is to lay the groundwork for an emerging process to assess U.S. geothermal resources that might be suitable for development as Enhanced Geothermal Systems (EGS). Interviews of leading geothermists indicate that doing that will be intertwined with updating assessments of U.S. higher-quality hydrothermal resources and reviewing methods for discovering ''hidden'' hydrothermal and EGS resources. The report reviews the history and status of assessment of high-temperature geothermal resources in the United States. Hydrothermal, Enhanced, and Hot Dry Rock resources are addressed. Geopressured geothermal resources are not. There are three main uses of geothermal resource assessments: (1) They inform industry and other interest parties of reasonable estimates of the amounts and likely locations of known and prospective geothermal resources. This provides a basis for private-sector decisions whether or not to enter the geothermal energy business at all, and for where to look for useful resources. (2) They inform government agencies (Federal, State, local) of the same kinds of information. This can inform strategic decisions, such as whether to continue to invest in creating and stimulating a geothermal industry--e.g., through research or financial incentives. And it informs certain agencies, e.g., Department of Interior, about what kinds of tactical operations might be required to support such activities as exploration and leasing. (3) They help the experts who are performing the assessment(s) to clarify their procedures and data, and in turn, provide the other two kinds of users with a more accurate interpretation of what the resulting estimates mean. The process of conducting this assessment brings a spotlight to bear on what has been accomplished in the domain of detecting and understanding reservoirs, in the period since the last major assessment was conducted.

  18. Seismic Technology Adapted to Analyzing and Developing Geothermal Systems Below Surface-Exposed High-Velocity Rocks

    Broader source: Energy.gov [DOE]

    Improved seismic imaging of geology across high-velocity Earth surfaces will allow more rigorous evaluation of geothermal prospects beneath volcanic outcrops. Seismic-based quantification of fracture orientation and intensity will result in optimal positioning of geothermal wells.

  19. Enhanced Geothermal System (EGS) Fact Sheet

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    An Enhanced Geothermal System (EGS) is a man-made reservoir, created where there is hot rock but insufficient or little natural permeability or fluid saturation. In an EGS, fluid ...

  20. Enhanced Geothermal System (EGS) Fact Sheet | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Enhanced Geothermal System (EGS) Fact Sheet Enhanced Geothermal Systems (EGS) are engineered reservoirs created to produce energy from geothermal resources that are otherwise not economical due to lack of water and/or permeability. EGS technology has the potential for accessing the earth's vast resources of heat located at depth to help meet the energy needs of the United States. Learn more about EGS from the Enhanced Geothermal Systems Fact Sheet below. PDF icon Enhanced Geothermal Systems Fact

  1. Enhanced Geothermal Systems Subprogram Overview | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Enhanced Geothermal System (EGS) Fact Sheet Enhanced Geothermal Systems (EGS) are engineered reservoirs created to produce energy from geothermal resources that are otherwise not economical due to lack of water and/or permeability. EGS technology has the potential for accessing the earth's vast resources of heat located at depth to help meet the energy needs of the United States. Learn more about EGS from the Enhanced Geothermal Systems Fact Sheet below. PDF icon Enhanced Geothermal Systems Fact

  2. Development and Validation of an Advanced Stimulation Prediction Model for Enhanced Geothermal Systems (EGS)

    Broader source: Energy.gov [DOE]

    Project objectives: Develop a true 3D hydro-thermal fracturing and proppant flow/transport simulator that is particularly suited for EGS reservoir creation. Perform laboratory scale model tests of hydraulic fracturing and proppant flow/transport using a polyaxial loading device, and use the laboratory results to test and validate the 3D simulator.

  3. Seismic Technology Adapted to Analyzing and Developing Geothermal Systems Below Surface-Exposed High-Velocity Rocks Final Report

    SciTech Connect (OSTI)

    Hardage, Bob A; DeAngelo, Michael V; Ermolaeva, Elena; Hardage, Bob A; Remington, Randy; Sava, Diana; Wagner, Donald; Wei, Shuijion

    2013-02-28

    The objective of our research was to develop and demonstrate seismic data-acquisition and data-processing technologies that allow geothermal prospects below high-velocity rock outcrops to be evaluated. To do this, we acquired a 3-component seismic test line across an area of exposed high-velocity rocks in Brewster County, Texas, where there is high heat flow and surface conditions mimic those found at numerous geothermal prospects. Seismic contractors have not succeeded in creating good-quality seismic data in this area for companies who have acquired data for oil and gas exploitation purposes. Our test profile traversed an area where high-velocity rocks and low-velocity sediment were exposed on the surface in alternating patterns that repeated along the test line. We verified that these surface conditions cause non-ending reverberations of Love waves, Rayleigh waves, and shallow critical refractions to travel across the earth surface between the boundaries of the fast-velocity and slow-velocity material exposed on the surface. These reverberating surface waves form the high level of noise in this area that does not allow reflections from deep interfaces to be seen and utilized. Our data-acquisition method of deploying a box array of closely spaced geophones allowed us to recognize and evaluate these surface-wave noise modes regardless of the azimuth direction to the surface anomaly that backscattered the waves and caused them to return to the test-line profile. With this knowledge of the surface-wave noise, we were able to process these test-line data to create P-P and SH-SH images that were superior to those produced by a skilled seismic data-processing contractor. Compared to the P-P data acquired along the test line, the SH-SH data provided a better detection of faults and could be used to trace these faults upward to the boundaries of exposed surface rocks. We expanded our comparison of the relative value of S-wave and P-wave seismic data for geothermal applications by inserting into this report a small part of the interpretation we have done with 3C3D data across Wister geothermal field in the Imperial Valley of California. This interpretation shows that P-SV data reveal faults (and by inference, also fractures) that cannot be easily, or confidently, seen with P-P data, and that the combination of P-P and P-SV data allows VP/VS velocity ratios to be estimated across a targeted reservoir interval to show where an interval has more sandstone (the preferred reservoir facies). The conclusion reached from this investigation is that S-wave seismic technology can be invaluable to geothermal operators. Thus we developed a strong interest in understanding the direct-S modes produced by vertical-force sources, particularly vertical vibrators, because if it can be demonstrated that direct-S modes produced by vertical-force sources can be used as effectively as the direct-S modes produced by horizontal-force sources, geothermal operators can acquire direct-S data across many more prospect areas than can be done with horizontal-force sources, which presently are limited to horizontal vibrators. We include some of our preliminary work in evaluating direct-S modes produced by vertical-force sources.

  4. Development of an Advanced Stimulation/Production Predictive Simulator for Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    Project objective: to develop a 3-D numerical simulator to model the following aspects of stimulation and long-term operation: (1)perturbation of natural stress, pore pressure, and formation temperature distributions caused by cold water injection, (2) shear slippage and aperture increase along fracture patchesŽ and aperture change caused by changes in effective normal stress,(3) fracture patchŽ linkup to form connected permeable volume and both reversible and irreversible permeability changes.

  5. Geothermal power development in Hawaii. Volume I. Review and analysis

    SciTech Connect (OSTI)

    Not Available

    1982-06-01

    The history of geothermal exploration in Hawaii is reviewed briefly. The nature and occurrences of geothermal resources are presented island by island. An overview of geothermal markets is presented. Other topies covered are: potential markets of the identified geothermal areas, well drilling technology, hydrothermal fluid transport, overland and submarine electrical transmission, community aspects of geothermal development, legal and policy issues associated with mineral and land ownership, logistics and infrastructure, legislation and permitting, land use controls, Regulation 8, Public Utilities Commission, political climate and environment, state plans, county plans, geothermal development risks, and business planning guidelines.

  6. National Geothermal Data System: Interactive Assessment of Geothermal Energy Potential in the U.S.

    SciTech Connect (OSTI)

    Allison, Lee; Richard, Stephen; Clark, Ryan; Patten, Kim; Love, Diane; Coleman, Celia; Chen, Genhan; Matti, Jordan; Pape, Estelle; Musil, Leah

    2012-01-30

    Geothermal-relevant geosciences data from all 50 states (www.stategeothermaldata.org), federal agencies, national labs, and academic centers are being digitized and linked in a distributed online network via the U.S. Department of Energy-funded National Geothermal Data System (NGDS) to foster geothermal energy exploration and development through use of interactive online ‘mashups,’data integration, and applications. Emphasis is first to make as much information as possible accessible online, with a long range goal to make data interoperable through standardized services and interchange formats. An initial set of thirty geoscience data content models is in use or under development to define a standardized interchange format: aqueous chemistry, borehole temperature data, direct use feature, drill stem test, earthquake hypocenter, fault feature, geologic contact feature, geologic unit feature, thermal/hot spring description, metadata, quaternary fault, volcanic vent description, well header feature, borehole lithology log, crustal stress, gravity, heat flow/temperature gradient, permeability, and feature descriptions data like developed geothermal systems, geologic unit geothermal properties, permeability, production data, rock alteration description, rock chemistry, and thermal conductivity. Map services are also being developed for isopach maps, aquifer temperature maps, and several states are working on geothermal resource overview maps. Content models are developed preferentially from existing community use in order to encourage widespread adoption and promulgate minimum metadata quality standards. Geoscience data and maps from other NGDS participating institutions, or “nodes” (USGS, Southern Methodist University, Boise State University Geothermal Data Coalition) are being supplemented with extensive land management and land use resources from the Western Regional Partnership (15 federal agencies and 5 Western states) to provide access to a comprehensive, holistic set of data critical to geothermal energy development. As of September 2011, we have over 34,000 records registered in the system catalog, and 234,942 data resources online, along with scores of Web services to deliver integrated data to the desktop for free downloading or online use. The data exchange mechanism is built on the U.S. Geoscience Information Network (USGIN, http://usgin.org and http://lab.usgin.org) protocols and standards developed as a partnership of the Association of American State Geologists (AASG) and U.S. Geological Survey.

  7. Water Resource Assessment of Geothermal Resources and Water Use in Geopressured Geothermal Systems

    SciTech Connect (OSTI)

    Clark, C. E.; Harto, C. B.; Troppe, W. A.

    2011-09-01

    This technical report from Argonne National Laboratory presents an assessment of fresh water demand for future growth in utility-scale geothermal power generation and an analysis of fresh water use in low-temperature geopressured geothermal power generation systems.

  8. Life-Cycle Analysis Results of Geothermal Systems in Comparison...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Life-Cycle Analysis Results of Geothermal Systems in Comparison to Other Power Systems Life-Cycle Analysis Results of Geothermal Systems in Comparison to Other Power Systems A ...

  9. Geothermal Drilling and Completion Technology Development Program. Quarterly progress report, October 1980-December 1980

    SciTech Connect (OSTI)

    Kelsey, J.R.

    1981-03-01

    The progress, status, and results of ongoing Research and Development (R and D) within the Geothermal Drilling and Completion Technology Development Program are described. The program emphasizes the development of geothermal drilling hardware, drilling fluids, completion technology, and lost circulation control methods. Advanced drilling systems are also under development.

  10. BLM Approves California Geothermal Development Project | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy BLM Approves California Geothermal Development Project BLM Approves California Geothermal Development Project August 21, 2013 - 2:41pm Addthis The Bureau of Land Management (BLM) and the U.S. Forest Service Inyo National Forest on August 13 signed the Record of Decision approving a new 40-megawatt geothermal project near Mammoth Lakes, California. The Casa Diablo IV Geothermal Development Project will be built on lands administered by the Inyo National Forest and on private lands

  11. DOE Leverages Fossil Energy Expertise to Develop And Explore Geothermal

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Resources | Department of Energy Leverages Fossil Energy Expertise to Develop And Explore Geothermal Energy Resources DOE Leverages Fossil Energy Expertise to Develop And Explore Geothermal Energy Resources February 7, 2011 - 4:36pm Addthis Focusing on reducing the upfront costs of geothermal development as well as improve its effectiveness, the U.S. Department of Energy (DOE) today announced plans to leverage oil and gas expertise to test the reliability and efficiency of geothermal

  12. First Commercial Success for Enhanced Geothermal Systems (EGS) Spells

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Exponential Growth for Geothermal Energy | Department of Energy Commercial Success for Enhanced Geothermal Systems (EGS) Spells Exponential Growth for Geothermal Energy First Commercial Success for Enhanced Geothermal Systems (EGS) Spells Exponential Growth for Geothermal Energy April 15, 2013 - 1:50pm Addthis Nevada-based industry partner Ormat Technologies leveraged DOE funds to deploy the nation's first commercial EGS at Desert Peak, Nevada. photo courtesy of Ormat Nevada-based industry

  13. Town of Pagosa Springs geothermal heating system

    SciTech Connect (OSTI)

    Garcia, M.B.

    1997-08-01

    The Town of Pagosa Springs has owned and operated a geothermal heating system since December 1982 to provide geothermal heating during the fall, winter and spring to customers in this small mountain town. Pagosa Springs is located in Archuleta County, Colorado in the southwestern corner of the State. The Town, nestled in majestic mountains, including the Continental Divide to the north and east, has an elevation of 7,150 feet. The use of geothermal water in the immediate area, however, dates back to the 1800`s, with the use of Ute Bands and the Navajo Nation and later by the U.S. Calvery in the 1880`s (Lieutenant McCauley, 1878). The Pagosa area geothermal water has been reported to have healing and therapeutic qualities.

  14. A History or Geothermal Energy Research and Development in the...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Conversion 1976-2006 A History or Geothermal Energy Research and Development in the United States: Energy Conversion 1976-2006 A history of geothermal energy R&D in the ...

  15. Geothermal Technologies Program Multi-Year Research, Development and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Demonstration Plan: Table of Contents | Department of Energy Table of Contents Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Table of Contents The Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan presents the status of geothermal energy technologies and details program plans from 2009 through 2015, with program activities through 2025. PDF icon gtp_myrdd_2009-toc.pdf More Documents & Publications Geothermal

  16. United Nations geothermal activities in developing countries

    SciTech Connect (OSTI)

    Beredjick, N.

    1987-07-01

    The United Nations implements technical cooperation projects in developing countries through its Department of Technical Cooperation for Development (DTCD). The DTCD is mandated to explore for and develop natural resources (water, minerals, and relevant infrastructure) and energy - both conventional and new and renewable energy sources. To date, the United Nations has been involved in over 30 geothermal exploration projects (completed or underway) in 20 developing countries: 8 in Africa (Djibouti, Ethiopia, Kenya, Madagascar); 8 in Asia (China, India, Jordan, Philippines, Thailand); 9 in Latin America (Bolivia, Chile, El Salvador, Honduras, Mexico, Nicaragua, Panama) and 6 in Europe (Greece, Romania, Turkey, Yugoslavia). Today, the DTCD has seven UNDP geothermal projects in 6 developing countries. Four of these (Bolivia, China, Honduras, and Kenya) are major exploration projects whose formulation and execution has been possible thanks to the generous contributions under cost-sharing arrangements from the government of Italy. These four projects are summarized.

  17. DOE and Partners Demonstrate Mobile Geothermal Power System at 2009 Geothermal Energy Expo

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's (DOE) Geothermal Technologies Office (GTO), along with Pratt & Whitney Power Systems, and Chena Power LLC demonstrated the PureCycle® mobile geothermal power generation unit at the 2009 Geothermal Energy Expo in Reno, Nevada.

  18. Rural Cooperative Geothermal Development Electric & Agriculture...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    More Documents & Publications Southwest Alaska Regional Geothermal Energy Project District Wide Geothermal Heating Conversion Blaine County School District Novel Energy Conversion ...

  19. Geothermal Data Aggregation: Submission of Information into the

    Broader source: Energy.gov [DOE]

    Project objective: High quality information supporting geothermal research and development will be submitted to the National Geothermal Data System (NGDS).

  20. National Geothermal Data System Architecture Design, Testing and Maintenance

    Broader source: Energy.gov [DOE]

    Project objective: To create the National Geothermal Data System (NGDS) comprised of a core and distributed network of databases and data sites that will comprise a federated system for acquisition, management, maintenance, and dissemination of geothermal and related data.

  1. GTP Adds Meeting on the National Geothermal Data System Project...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Adds Meeting on the National Geothermal Data System Project to Peer Review GTP Adds Meeting on the National Geothermal Data System Project to Peer Review May 10, 2010 - 2:41pm...

  2. Mathematical modeling of the behavior of geothermal systems under exploitation

    SciTech Connect (OSTI)

    Bodvarsson, G.S.

    1982-01-01

    Analytical and numerical methods have been used in this investigation to model the behavior of geothermal systems under exploitation. The work is divided into three parts: (1) development of a numerical code, (2) theoretical studies of geothermal systems, and (3) field applications. A new single-phase three-dimensional simulator, capable of solving heat and mass flow problems in a saturated, heterogeneous porous or fractured medium has been developed. The simulator uses the integrated finite difference method for formulating the governing equations and an efficient sparse solver for the solution of the linearized equations. In the theoretical studies, various reservoir engineering problems have been examined. These include (a) well-test analysis, (b) exploitation strategies, (c) injection into fractured rocks, and (d) fault-charged geothermal reservoirs.

  3. Enhanced Geothermal System (EGS) Fact Sheet

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    1 Massachusetts Institute of Technology (MIT). 2006. The future of geothermal energy. Cambridge, Massachusetts. Available: http:geothermal.inel.govpublications...

  4. National Geothermal Data System Deployed to Serve Industry | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy National Geothermal Data System Deployed to Serve Industry National Geothermal Data System Deployed to Serve Industry May 28, 2014 - 9:08am Addthis The National Geothermal Data System deploys free, open-source online scientific information, a mammoth resource of geoscience data. In the data visualization shown here, Schlumberger utilized bottom hole temperatures from the National Geothermal Data Systems (NDGS) on-line platform to supplement subscription data temperatures used to

  5. EERE Success Story-Iowa: Geothermal System Creates Jobs, Reduces

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Emissions in Rural Community | Department of Energy Geothermal System Creates Jobs, Reduces Emissions in Rural Community EERE Success Story-Iowa: Geothermal System Creates Jobs, Reduces Emissions in Rural Community November 6, 2013 - 12:00am Addthis Utilizing funding from EERE and cost shares from other federal agencies, the City of West Union, Iowa, drilled geothermal wells in order to install a closed-loop geothermal heating and cooling system. The system is designed to serve 330,000

  6. Energy Returned On Investment of Engineered Geothermal Systems

    Broader source: Energy.gov [DOE]

    Project objective: Determine the Energy Returned on Investment (EROI) for electric power production of Engineered Geothermal Systems (EGS).

  7. Ball State building massive geothermal system

    Broader source: Energy.gov [DOE]

    Ball State University is building America’s largest ground source district geothermal heating and cooling system. The new operation will save the school millions of dollars, slash greenhouse gases and create jobs. The project will also “expand how America will define the use of geothermal technology on a district-wide scale,” and provide health benefits such as reducing asthma rates for Indiana residents, says Philip Sachtleben, Ball State’s associate vice president of governmental relations. The system will cool and heat nearly 50 buildings on Ball State’s Muncie, Ind., campus, replace four coal-burning boilers and span more than 600 acres. The switch to geothermal will save the university $2.2 million in fuel costs and cut its carbon footprint in half.

  8. Rural Cooperative Geothermal Development Electric & Agriculture |

    Broader source: Energy.gov (indexed) [DOE]

    Department of Energy DOE 2010 Geothermal Program Peer Review; Low Temperature Demonstration Projects PDF icon low_silveria_rural_electric_coop.pdf More Documents & Publications Southwest Alaska Regional Geothermal Energy Project District Wide Geothermal Heating Conversion Blaine County School District Novel Energy Conversion Equipment for Low Temperature Geothermal Resources

  9. Geothermal Energy Association Recognizes the National Geothermal Data System

    Broader source: Energy.gov [DOE]

    The Geothermal Energy Association (GEA) announced today the winners of their 2014 GEA Honors, which recognizes companies, projects, and individuals who have demonstrated outstanding achievement in...

  10. The Krafla Geothermal System. A Review of Geothermal Research...

    Open Energy Info (EERE)

    A Review of Geothermal Research and Revision of the Conceptual Model Authors Mortensen A.K., Gudmundsson ., Steingrmsson B., Sigmundsson F., Axelsson G., rmannsson H.,...

  11. Annual US Geothermal Power Production and Development Report...

    Open Energy Info (EERE)

    and Development Report Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Annual US Geothermal Power Production and Development Report Abstract To increase...

  12. What is the National Geothermal Data System (NGDS)? Fact Sheet

    SciTech Connect (OSTI)

    U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy

    2012-09-03

    Overview of the National Geothermal Data System, a distributed, interoperable network of data repositories and state geological service providers from across the U.S. and the nation's leading academic geothermal centers.

  13. National Geothermal Data System & Online Tools Presentation (IEA-GIA event)

    SciTech Connect (OSTI)

    Jay Nathwani

    2011-09-30

    Geothermal Technologies Program presentation by Jay Nathwani on the National Geothermal Data System, 9-30-2011.

  14. Enhanced Geothermal System (EGS) Fact Sheet | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Overview of Enhanced Geothermal Systems. PDF icon egs_calpine_peer2013.pdf More Documents & Publications Demonstration of an Enhanced Geothermal System at the Northwest Geysers Geothermal Field, California EA-1733: Final Environmental Assessment Fracture Evolution Following a Hydraulic Stimulation within an EGS Reservoir

  15. Geothermal materials development at Brookhaven National Laboratory

    SciTech Connect (OSTI)

    Kukacka, L.E.

    1997-06-01

    As part of the DOE/OGT response to recommendations and priorities established by industrial review of their overall R and D program, the Geothermal Materials Program at Brookhaven National Laboratory (BNL) is focusing on topics that can reduce O and M costs and increase competitiveness in foreign and domestic markets. Corrosion and scale control, well completion materials, and lost circulation control have high priorities. The first two topics are included in FY 1997 BNL activities, but work on lost circulation materials is constrained by budgetary limitations. The R and D, most of which is performed as cost-shared efforts with US geothermal firms, is rapidly moving into field testing phases. FY 1996 and 1997 accomplishments in the development of lightweight CO{sub 2}-resistant cements for well completions; corrosion resistant, thermally conductive polymer matrix composites for heat exchange applications; and metallic, polymer and ceramic-based corrosion protective coatings are given in this paper. In addition, plans for work that commenced in March 1997 on thermally conductive cementitious grouting materials for use with geothermal heat pumps (GHP), are discussed.

  16. Geothermal Development and the Use of Categorical Exclusions (Poster)

    SciTech Connect (OSTI)

    Levine, A.; Young, K. R.

    2014-09-01

    The federal environmental review process under the National Environmental Policy Act of 1969 (NEPA) can be complex and time consuming. Currently, a geothermal developer may have to complete the NEPA process multiple times during the development of a geothermal project. One mechanism to reduce the timeframe of the federal environmental review process for activities that do not have a significant environmental impact is the use of Categorical Exclusions (CXs), which can exempt projects from having to complete an Environmental Assessment or Environmental Impact Statement. This study focuses primarily on the CX process and its applicability to geothermal exploration. In this paper, we Provide generalized background information on CXs, including previous NEPA reports addressing CXs, the process for developing CXs, and the role of extraordinary circumstances; Examine the history of the Bureau of Land Management's (BLM) geothermal CXs;Compare current CXs for oil, gas, and geothermal energy; Describe bills proposing new statutory CXs; Examine the possibility of standardizing geothermal CXs across federal agencies; and Present analysis from the Geothermal NEPA Database and other sources on the potential for new geothermal exploration CXs. As part of this study, we reviewed Environmental Assessments (EAs) conducted in response to 20 geothermal exploration drilling permit applications (Geothermal Drilling Permits or Notices of Intents) since the year 2001, the majority of which are from the last 5 years. All 20 EAs reviewed for this study resulted in a Finding of No Significant Impact (FONSI). While many of these FONSI's involved proponent proposed or federal agency required mitigation, this still suggests it may be appropriate to create or expand an exploration drilling CX for geothermal, which would have a significant impact on reducing geothermal exploration timelines and up-front costs. Ultimately, federal agencies tasked with permitting and completing environmental reviews for geothermal exploration drilling activities and/or legislative representatives are the responsible parties to discuss the merits and implementation of new or revised CXs for geothermal development.

  17. Community Geothermal Technology Program: Bottom heating system using geothermal power for propagation. Final report, Phases 1 and 2

    SciTech Connect (OSTI)

    Downing, J.C.

    1990-01-01

    The objective is to develop and study a bottom-heating system in a greenhouse utilizing geothermal energy to aid germination and speed growth of palms. Source of heat was geothermal brine from HGP-A well. The project was successful; the heat made a dramatic difference with certain varieties, such as Areca catechu (betelnut) with 82% germination with heat, zero without. For other varieties, germination rates were much closer. Quality of seed is important. Tabs, figs.

  18. Enhanced Geothermal System (EGS) Infographic | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Enhanced Geothermal System (EGS) Infographic Enhanced Geothermal System (EGS) Infographic Calpine Staff Run Tests at The Geysers Geothermal Power Plant in California Calpine Staff Run Tests at The Geysers Geothermal Power Plant in California The EGS infographic provides an overview of this burgeoning technology that could access an enormous, domestic, clean energy resource predicted at more than 100 GW in the United States alone, according to an MIT study. To take advantage of this vast

  19. Geothermal Energy Association Recognizes the National Geothermal...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Geothermal Energy Association Recognizes the National Geothermal Data System Geothermal Energy Association Recognizes the National Geothermal Data System July 29, 2014 - 8:20am...

  20. Geothermal Technologies Program Multi-Year Research, Development and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Demonstration Plan | Department of Energy Multi-Year Research, Development and Demonstration Plan Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan The Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan presents the status of geothermal energy technologies and details program plans from 2009 through 2015, with program activities through 2025. PDF icon gtp_myrdd_2009-complete.pdf More Documents & Publications

  1. Program planner's guide to geothermal development in California

    SciTech Connect (OSTI)

    Yen, W.W.S.; Chambers, D.M.; Elliott, J.F.; Whittier, J.P.; Schnoor, J.J.; Blachman, S.

    1980-09-30

    The resource base, status of geothermal development activities, and the state's energy flow are summarized. The present and projected geothermal share of the energy market is discussed. The public and private sector initiatives supporting geothermal development in California are described. These include legislation to provide economic incentives, streamline regulation, and provide planning assistance to local communities. Private sector investment, research, and development activities are also described. The appendices provide a ready reference of financial incentives. (MHR)

  2. Development Wells At Long Valley Caldera Geothermal Area (Suemnicht...

    Open Energy Info (EERE)

    the geothermal power plants. References Gene A. Suemnicht, Michael L. Sorey, Joseph N. Moore, Robert Sullivan (2007) The Shallow Hydrothermal System of Long Valley Caldera,...

  3. Materials selection guidelines for geothermal energy utilization systems

    SciTech Connect (OSTI)

    Ellis, P.F. II; Conover, M.F.

    1981-01-01

    This manual includes geothermal fluid chemistry, corrosion test data, and materials operating experience. Systems using geothermal energy in El Salvador, Iceland, Italy, Japan, Mexico, New Zealand, and the United States are described. The manual provides materials selection guidelines for surface equipment of future geothermal energy systems. The key chemical species that are significant in determining corrosiveness of geothermal fluids are identified. The utilization modes of geothermal energy are defined as well as the various physical fluid parameters that affect corrosiveness. Both detailed and summarized results of materials performance tests and applicable operating experiences from forty sites throughout the world are presented. The application of various non-metal materials in geothermal environments are discussed. Included in appendices are: corrosion behavior of specific alloy classes in geothermal fluids, corrosion in seawater desalination plants, worldwide geothermal power production, DOE-sponsored utilization projects, plant availability, relative costs of alloys, and composition of alloys. (MHR)

  4. Water Use in the Development and Operations of Geothermal Power...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Power Plants Water Use in the Development and Operations of Geothermal Power Plants This report summarizes what is currently known about the life cycle water requirements of ...

  5. A History of Geothermal Energy Research and Development in the...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    A History of Geothermal Energy Research and Development in the United States: Exploration 1976-2006 This report summarizes significant research projects performed by the ...

  6. Low Cost Exploration, Testing, And Development Of The Chena Geothermal...

    Open Energy Info (EERE)

    to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Low Cost Exploration, Testing, And Development Of The Chena Geothermal Resource Abstract The...

  7. Low Cost Exploration, Testing, and Development of the Chena Geothermal...

    Open Energy Info (EERE)

    Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Low Cost Exploration, Testing, and Development of the Chena Geothermal Resource Abstract The...

  8. Concept Testing and Development at the Raft River Geothermal...

    Broader source: Energy.gov (indexed) [DOE]

    Development at the Raft River Geothermal Field, Idaho presentation at the April 2013 peer review meeting held in Denver, Colorado. raftriverpeer2013.pdf More Documents &...

  9. A History of Geothermal Energy Research and Development in the...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Reservoir Engineering 1976-2006 A History of Geothermal Energy Research and Development in the United States: Reservoir Engineering 1976-2006 This report summarizes significant ...

  10. Geothermal Resources Development in Tibet, China | Open Energy...

    Open Energy Info (EERE)

    navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings: Geothermal Resources Development in Tibet, China Abstract Tibet is located in the eastern...

  11. Geothermal Development in Imperial County | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Geothermal Development in Imperial County Abstract Imperial County is estimated to have a...

  12. Changes in Surficial Features Associated with Geothermal Development...

    Open Energy Info (EERE)

    Changes in Surficial Features Associated with Geothermal Development in Long Valley Caldera, California, 1985-1997 Jump to: navigation, search OpenEI Reference LibraryAdd to...

  13. Concept Testing and Development at the Raft River Geothermal...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    PDF icon egsmooreraftriver.pdf More Documents & Publications Concept Testing and Development at the Raft River Geothermal Field, Idaho The Role of Geochemistry and Stress on ...

  14. Dominica Grants Geothermal Exploration and Development License to Caribbean Company

    Broader source: Energy.gov [DOE]

    The geothermal resources of Dominica will now be developed by a Caribbean company as a long-term response to the high cost of electricity in the country.

  15. Hawaii's Rainforest Crunch: Land, People, and Geothermal Development...

    Open Energy Info (EERE)

    Rainforest Crunch: Land, People, and Geothermal Development Jump to: navigation, search OpenEI Reference LibraryAdd to library Periodical: Hawaii's Rainforest Crunch: Land, People,...

  16. Concept Testing and Development at the Raft River Geothermal...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Concept Testing and Development at the Raft River Geothermal Field, Idaho presentation at the April 2013 peer review meeting held in Denver, Colorado. PDF icon ...

  17. A History or Geothermal Energy Research and Development in the...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Drilling 1976-2006 A History or Geothermal Energy Research and Development in the United States: Drilling 1976-2006 This report summarizes significant research projects performed ...

  18. Dixie Valley - Geothermal Development in the Basin and Range...

    Open Energy Info (EERE)

    Not Provided DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for Dixie Valley - Geothermal Development in the Basin and Range Citation Dixie...

  19. Colorado Takes Steps to Expand Geothermal Development

    Broader source: Energy.gov [DOE]

    Colorado Governor John Hickenlooper signed a geothermal bond bill May 30, providing $1.98 million in state funding and matching the Energy Department’s investment in geothermal energy exploration at Pagosa Springs.

  20. National Geothermal Data System Hub Deployment Timeline (Appendix E-1-d)

    SciTech Connect (OSTI)

    Caudill, Christy

    2015-12-20

    Excel spreadsheet describing activity, spending, and development for the four data hubs (Arizona Geoloical Survey, Kentucky Geological Survey, Illinois Geological Survey, and Nevada Bureau of Mines and Geology) serving data for the National Geothermal Data System under the State Contributions to the National Geothermal Data System Project.

  1. Structural Orientations Adjacent to Some Colorado Geothermal Systems

    SciTech Connect (OSTI)

    Richard,

    2012-02-01

    Citation Information: Originator: Geothermal Development Associates, Reno, Nevada Publication Date: 2012 Title: Structural Data Edition: First Publication Information: Publication Place: Reno Nevada Publisher: Geothermal Development Associates, Reno, Nevada Description: Structural orientations (fractures, joints, faults, lineaments, bedding orientations, etc.) were collected with a standard Brunton compass during routine field examinations of geothermal phenomena in Colorado. Often multiple orientations were taken from one outcrop. Care was taken to ensure outcrops were "in place". Point data was collected with a hand-held GPS unit. The structural data is presented both as standard quadrant measurements and in format suitable for ESRI symbology Spatial Domain: Extent: Top: 4491528.924999 m Left: 207137.983196 m Right: 432462.310324 m Bottom: 4117211.772001 m Contact Information: Contact Organization: Geothermal Development Associates, Reno, Nevada Contact Person: Richard Rick Zehner Address: 3740 Barron Way City: Reno State: NV Postal Code: 89511 Country: USA Contact Telephone: 775-737-7806 Spatial Reference Information: Coordinate System: Universal Transverse Mercator (UTM) WGS1984 Zone 13N False Easting: 500000.00000000 False Northing: 0.00000000 Central Meridian: -105.00000000 Scale Factor: 0.99960000 Latitude of Origin: 0.00000000 Linear Unit: Meter Datum: World Geodetic System 1984 (WGS 1984) Prime Meridian: Greenwich Angular Unit: Degree Digital Form: Format Name: Shape file

  2. Geothermal drilling and completion technology development program. Quarterly progress report, April-June 1980

    SciTech Connect (OSTI)

    Varnado, S.G.

    1980-07-01

    The progress, status, and results of ongoing research and development (R and D) within the Geothermal Drilling and Completion Technology Development Program are reported. The program emphasizes the development of geothermal drilling hardware, drilling fluids, completion technology, and lost circulation control methods. Advanced drilling systems are also under development. The goals of the program are to develop the technology required to reduce well costs by 25% by 1983 and by 50% by 1987.

  3. Geothermal drilling ad completion technology development program. Semi-annual progress report, April-September 1979

    SciTech Connect (OSTI)

    Varnado, S.G.

    1980-05-01

    The progress, status, and results of ongoing Research and Development (R and D) within the Geothermal Drilling and Completion Technology Development Program are described. The program emphasizes the development of geothermal drilling hardware, drilling fluids, and completion technology. Advanced drilling systems are also under development. The goals of the program are to develop the technology required to reduce well costs by 25% by 1982 and by 50% by 1986.

  4. Geothermal drilling and completion technology development program. Annual progress report, October 1979-September 1980

    SciTech Connect (OSTI)

    Varnado, S.G.

    1980-11-01

    The progress, status, and results of ongoing research and development (R and D) within the Geothermal Drilling and Completion Technology Development Program are described. The program emphasizes the development of geothermal drilling hardware, drilling fluids, completion technology, and lost circulation control methods. Advanced drilling systems are also under development. The goals of the program are to develop the technology required to reduce well costs by 25% by 1983 and by 50% by 1987.

  5. Sedimentary Geothermal Systems | Open Energy Information

    Open Energy Info (EERE)

    Heat Pumps Sedimentary Geothermal Links Related documents and websites Estimate of the Geothermal Energy Resource in the Major Sedimentary Basins in the United States...

  6. Residential Geothermal Systems Credit | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Residential Low Income Residential Savings Category Geothermal Heat Pumps Geothermal Direct-Use Maximum Rebate 1,500 Program Info Sector Name State Administrator Montana...

  7. Geothermal Heating and Cooling Systems Featured on NBC Nightly...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    cooling systems that are providing 30%-70% energy and cost savings for homeowners in Jordan, New York. Demand for these systems is growing; nationally, shipments of geothermal...

  8. High-Temperature-High-Volume Lifting for Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    Project objective: Advance the technology for well fluids lifting systems to meet the foreseeable pressure; temperature; and longevity needs of the Enhanced Geothermal Systems (EGS) industry.

  9. Blind Geothermal System Exploration in Active Volcanic Environments...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Blind Geothermal System Exploration in Active Volcanic Environments; Multi-phase Geophysical and Geochemical Surveys in Overt & Subtle Volcanic Systems, Hawaii & Maui Blind...

  10. National Geothermal Data Systems Data Acquisition and Access...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Systems Data Acquisition and Access National Geothermal Data Systems Data Acquisition and Access Project objective: To support the acquisition of new and legacy data from...

  11. A Thermoelastic Hydraulic Fracture Design Tool for Geothermal Reservoir Development

    SciTech Connect (OSTI)

    Ahmad Ghassemi

    2003-06-30

    Geothermal energy is recovered by circulating water through heat exchange areas within a hot rock mass. Geothermal reservoir rock masses generally consist of igneous and metamorphic rocks that have low matrix permeability. Therefore, cracks and fractures play a significant role in extraction of geothermal energy by providing the major pathways for fluid flow and heat exchange. Thus, knowledge of conditions leading to formation of fractures and fracture networks is of paramount importance. Furthermore, in the absence of natural fractures or adequate connectivity, artificial fracture are created in the reservoir using hydraulic fracturing. At times, the practice aims to create a number of parallel fractures connecting a pair of wells. Multiple fractures are preferred because of the large size necessary when using only a single fracture. Although the basic idea is rather simple, hydraulic fracturing is a complex process involving interactions of high pressure fluid injections with a stressed hot rock mass, mechanical interaction of induced fractures with existing natural fractures, and the spatial and temporal variations of in-situ stress. As a result it is necessary to develop tools that can be used to study these interactions as an integral part of a comprehensive approach to geothermal reservoir development, particularly enhanced geothermal systems. In response to this need we have set out to develop advanced thermo-mechanical models for design of artificial fractures and rock fracture research in geothermal reservoirs. These models consider the significant hydraulic and thermo-mechanical processes and their interaction with the in-situ stress state. Wellbore failure and fracture initiation is studied using a model that fully couples poro-mechanical and thermo-mechanical effects. The fracture propagation model is based on a complex variable and regular displacement discontinuity formulations. In the complex variable approach the displacement discontinuities are defined from the numerical solution of a complex hypersingular integral equation written for a given fracture configuration and loading. The fracture propagation studies include modeling interaction of induced fractures with existing discontinuities such as faults and joints. In addition to the fracture propagation studies, two- and three-dimensional heat extraction solution algorithms have been developed and used to estimate heat extraction and the variations of the reservoir stress with cooling. The numerical models have been developed in a user-friendly environment to create a tool for improving fracture design and investigating single or multiple fracture propagation in rock.

  12. A Roadmap for Strategic Development of Geothermal Exploration Technologies

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    PROCEEDINGS, Thirty-Eighth Workshop on Geothermal Reservoir Engineering Stanford University, Stanford, California, February 11-13, 2013 SGP-TR-198 A ROADMAP FOR STRATEGIC DEVELOPMENT OF GEOTHERMAL EXPLORATION TECHNOLOGIES Benjamin R. Phillips 1,2 , John Ziagos 3 , Hildigunnur Thorsteinsson 2 *, and Eric Hass 4 1 SRA International, Inc. 2 Geothermal Technologies Office, U.S. Department of Energy 1000 Independence Ave. SW, Washington, DC 20585, USA e-mail: benjamin.phillips@ee.doe.gov 3 Lawrence

  13. Overview of Proposed Geothermal Development in Hawaii

    SciTech Connect (OSTI)

    1990-02-15

    During the four hours of the public meeting held by the State Department of Business and Economic Development (DBED) in Maui in November 1989, not one of the 200 persons present spoke in favor of geothermal development on the Big Island to supply power to Oahu. However, we were all sure after the meeting that the State would proceed on its course to develop the project in spite of any public concerns. This situation we find incredible considering there are many unanswered questions on a subject of paramount importance to the economic and environmental well being of all of us. Our concerns are well expressed in the editorial of The Maui News, December 10, 1989 . We wish to set the record straight with some facts from an economic, financial and utility planning viewpoint, recognizing also the potentially serious social, health and other environmental impacts.

  14. Ecology problems associated with geothermal development in California

    SciTech Connect (OSTI)

    Shinn, J.H.; Ireland, R.R.

    1980-08-04

    Geothermal power plants have the potential for supplying about 5% of the US electrical generating needs by 1985, and are even now supplying about one third of San Francisco's electricity. Investigations have shown that the typical geothermal field, such as the hot water resource of Imperial Valley, can be developed in an environmentally sound manner when proper considerations are made for ecosystem problems. Experimental evidence is presented pro and con for potential impacts due to habitat disturbance, powerline corridors, noise effects, trace element emissions from cooling towers, accidental brine discharges into aquatic or soil systems, competition for water and H/sub 2/S effects on vegetation. A mitigation and control strategy is recommended for each ecological issue and it is shown where effects are likely to be irreversible.

  15. Systems for Electrical Power from Coproduced and Low Temperature Geothermal

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Resources | Department of Energy Systems for Electrical Power from Coproduced and Low Temperature Geothermal Resources Systems for Electrical Power from Coproduced and Low Temperature Geothermal Resources Presentation about Systems for Electrical Power from Coproduced and Low Temperature Geothermal Resources includes background, results and discussion, future plans and conclusion. PDF icon systems_for_electrical_power_from_coproduced_and_low_final.pdf More Documents & Publications AAPG

  16. NREL: Geothermal Technologies - Capabilities

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Capabilities The NREL geothermal team leverages its capabilities in several different areas to enhance the visibility of geothermal technologies. These areas include low-temperature resources; enhanced geothermal systems; strategic planning, analysis, and modeling; and project assessment. Low-Temperature Geothermal Resources NREL works to develop and deploy innovative new technologies that will help the geothermal community achieve widespread adoption of under-utilized low-temperature resources

  17. NREL: Geothermal Technologies - Projects

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Projects The NREL geothermal team is involved in various projects to help accelerate the development and deployment of clean, renewable geothermal technologies, including low-temperature resources; enhanced geothermal systems; strategic planning, analysis, and modeling; and project assessment. Low-Temperature Geothermal Resources NREL supports the U.S. Department of Energy's (DOE) Geothermal Technologies Office (GTO) through various collaborations that evaluate the levelized cost of electricity

  18. Towards the Understanding of Induced Seismicity in Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Gritto, Roland; Dreger, Douglas; Heidbach, Oliver

    2014-08-29

    This DOE funded project was a collaborative effort between Array Information Technology (AIT), the University of California at Berkeley (UCB), the Helmholtz Centre Potsdam - German Research Center for Geosciences (GFZ) and the Lawrence Berkeley National Laboratory (LBNL). It was also part of the European research project “GEISER”, an international collaboration with 11 European partners from six countries including universities, research centers and industry, with the goal to address and mitigate the problems associated with induced seismicity in Enhanced Geothermal Systems (EGS). The goal of the current project was to develop a combination of techniques, which evaluate the relationship between enhanced geothermal operations and the induced stress changes and associated earthquakes throughout the reservoir and the surrounding country rock. The project addressed the following questions: how enhanced geothermal activity changes the local and regional stress field; whether these activities can induce medium sized seismicity M > 3; (if so) how these events are correlated to geothermal activity in space and time; what is the largest possible event and strongest ground motion, and hence the potential hazard associated with these activities. The development of appropriate technology to thoroughly investigate and address these questions required a number of datasets to provide the different physical measurements distributed in space and time. Because such a dataset did not yet exist for an EGS system in the United State, we used current and past data from The Geysers geothermal field in northern California, which has been in operation since the 1960s. The research addressed the need to understand the causal mechanisms of induced seismicity, and demonstrated the advantage of imaging the physical properties and temporal changes of the reservoir. The work helped to model the relationship between injection and production and medium sized magnitude events that have jeopardized, and in some cases suspended, the generation of energy from EGS systems worldwide.

  19. Development of Exploration Methods for Engineered Geothermal...

    Open Energy Info (EERE)

    M. Tibuleac, Joe Iovenitti, David von Seggern, Jon Sainsbury, Glenn Biasi and John G. Anderson Conference Stanford Geothermal Conference; Stanford, California; 20130101 Published...

  20. Geothermal Electricity Technology Evaluation Model (GETEM) Development

    Office of Energy Efficiency and Renewable Energy (EERE)

    Project objective: Provide a tool for estimating the performance and contributions of all phases of a geothermal project to power generation costs.

  1. Rural Cooperative Geothermal Development Electric & Agriculture

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... Project ManagementCoordination * Surprise Valley Electric management and staff is ... Project Coordinator anytime significant event occurs 10 | US DOE Geothermal Program ...

  2. Dominica Grants Geothermal Exploration and Development License...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Geothermal energy is generated by heat stored beneath the earth's surface and therefore requires no purchase of fuel. Efforts have been ongoing throughout the Caribbean to harness ...

  3. National Geothermal Data System Design and Testing | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    National Geothermal Data System Design and Testing presentation at the April 2013 peer review meeting held in Denver, Colorado. PDF icon ngds_peer2013.pdf More Documents & Publications AASG State Geological Survey How to Utilize the National Geothermal Data System (NGDS) and Create Your Own Federated Data Network with "Node-In-A-Box" National Geothermal Data Systems Data Acquisition and Access

  4. Structure of The Dixie Valley Geothermal System, a "Typical"...

    Open Energy Info (EERE)

    geothermal system have been debated for some time. The primary structural model ahs been a single fault with 54 dip. New data including a detailed gravity survey,...

  5. A Brief Classification of Geothermal Systems | Open Energy Information

    Open Energy Info (EERE)

    LibraryAdd to library General: A Brief Classification of Geothermal Systems Author Paul Brophy Published GRC Annual Meeting, 2007 DOI Not Provided Check for DOI availability:...

  6. Geographic Information System At Chena Geothermal Area (Holdmann...

    Open Energy Info (EERE)

    Details Location Chena Geothermal Area Exploration Technique Geographic Information System Activity Date 2005 - 2007 Usefulness useful DOE-funding Unknown Exploration Basis...

  7. Understanding The Chena Hot Springs, Alaska, Geothermal System...

    Open Energy Info (EERE)

    The Chena Hot Springs, Alaska, Geothermal System Using Temperature And Pressure Data From Exploration Boreholes Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  8. Final Report: Enhanced Geothermal Systems Technology Phase II...

    Open Energy Info (EERE)

    Systems Technology Phase II: Animas Valley, New Mexico Authors R.A. Cunniff and R.L. Bowers Published Lightning Dock Geothermal, Inc. Technical Report, 2003 DOI Not...

  9. Long Valley Caldera Geothermal and Magmatic Systems | Open Energy...

    Open Energy Info (EERE)

    Magmatic Systems Abstract Long Valley Caldera in eastern California has been explored for geothermal resources since the 1960s. Early shallow exploration wells (<300m) were located...

  10. Reconnaissance geophysical studies of the geothermal system in...

    Open Energy Info (EERE)

    Reconnaissance geophysical studies of the geothermal system in southern Raft River Valley, Idaho Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article:...

  11. Helium isotopes in geothermal systems- Iceland, The Geysers,...

    Open Energy Info (EERE)

    isotopes in geothermal systems- Iceland, The Geysers, Raft River and Steamboat Springs Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Helium...

  12. High-Temperature-High-Volume Lifting for Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    High-Temperature-High-Volume Lifting for Enhanced Geothermal Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

  13. Creation of an Engineered Geothermal System through Hydraulic...

    Broader source: Energy.gov (indexed) [DOE]

    Project objectives: To create an Enhanced Geothermal System on the margin of the Cosofield through the hydraulic, thermal, andor chemical stimulation of one or more tight ...

  14. Flathead Electric Cooperative Facility Geothermal Heat Pump System Upgrade

    Broader source: Energy.gov [DOE]

    Project Will Take Advantage of Abundant Water in Shallow Aquifer. Demonstrate Low Temperature GSHP System Design. Provides a Baseline for Local Industrial Geothermal Project Costs and Benefits.

  15. Towards the Understanding of Induced Seismicity in Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    Towards the Understanding of Induced Seismicity in Enhanced Geothermal Systems presentation at the April 2013 peer review meeting held in Denver, Colorado

  16. Blind Geothermal System Exploration in Active Volcanic Environments...

    Open Energy Info (EERE)

    Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Blind Geothermal System Exploration in Active Volcanic Environments; Multi-phase Geophysical...

  17. Identification of a New Blind Geothermal System with Hyperspectral...

    Open Energy Info (EERE)

    a New Blind Geothermal System with Hyperspectral Remote Sensing and Shallow Temperature Measurements at Columbus Salt Marsh, Esmeralda County, Nevada Jump to: navigation, search...

  18. Enhanced Geothermal Systems (EGS) comparing water with CO2 as...

    Office of Scientific and Technical Information (OSTI)

    (EGS) comparing water with CO2 as heattransmission fluids Citation Details In-Document Search Title: Enhanced Geothermal Systems (EGS) comparing water with CO2 as ...

  19. Enthalpy restoration in geothermal energy processing system

    DOE Patents [OSTI]

    Matthews, Hugh B.

    1983-01-01

    A geothermal deep well energy extraction system is provided of the general type in which solute-bearing hot water is pumped to the earth's surface from a relatively low temperature geothermal source by transferring thermal energy from the hot water to a working fluid for driving a primary turbine-motor and a primary electrical generator at the earth's surface. The superheated expanded exhaust from the primary turbine motor is conducted to a bubble tank where it bubbles through a layer of sub-cooled working fluid that has been condensed. The superheat and latent heat from the expanded exhaust of the turbine transfers thermal energy to the sub-cooled condensate. The desuperheated exhaust is then conducted to the condenser where it is condensed and sub-cooled, whereupon it is conducted back to the bubble tank via a barometric storage tank. The novel condensing process of this invention makes it possible to exploit geothermal sources which might otherwise be non-exploitable.

  20. Building geothermal research and development partnerships: The California Energy Commission`s geothermal program

    SciTech Connect (OSTI)

    Hare, R.; Tiangco, V.; Birkinshaw, K.; Johannis, M.

    1995-12-31

    The California Energy Commission`s Geothermal Program (Assembly Bill 1905, Bosco) has built cost-shared Research, Development and Demonstration (RD&D) partnerships with over 150 public and private entities. The Geothermal Program promotes the development of new geothermal resources and technologies for both direct-use and electricity generation while protecting the environment and promoting energy independence. This is accomplished by providing financial and technical assistance in the form of contingent awards which, depending on project success, can become either a loan or a grant. Some of the cost-shared RD&D accomplishments are presented. The process and requirements to obtain financial assistance through the Geothermal Program are summarized.

  1. Geothermal Heat Pump Manufacturing Activities

    Gasoline and Diesel Fuel Update (EIA)

    5 Companies involved in geothermal heat pump activities by type, 2008 and 2009 Type of Activity 2008 2009 Geothermal Heat Pump or System Design 17 17 Prototype Geothermal Heat Pump Development 12 13 Prototype Systems Geothermal Development 5 7 Wholesale Distribution 15 18 Retail Distribution 3 3 Installation 4 3 Manufacture of System Components 3 4 Source: U.S. Energy Information Administration (EIA), Form EIA-902, "Annual Geothermal

  2. Geothermal Direct Use Technology & Marketplace Workshop Summary

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... a closed loop geothermal system requires no new water. ... Technology and Engineering Research, Development, ... 10:45 a.m. - Geothermal Deep Direct Use Technology ...

  3. Enhanced Geothermal Systems (EGS) with CO2 as Heat Transmission...

    Open Energy Info (EERE)

    Fluid Project Type Topic 1 Laboratory Call for Submission of Applications for Research, Development and Analysis of Geothermal Technologies Project Type Topic 2 Supercritical...

  4. IEA-GIA ExCo - National Geothermal Data System and Online Tools...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    IEA-GIA ExCo - National Geothermal Data System and Online Tools IEA-GIA ExCo - National Geothermal Data System and Online Tools National Geothermal Data System presentation by Jay ...

  5. IEA-GIA ExCo - National Geothermal Data System and Online Tools...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    IEA-GIA ExCo - National Geothermal Data System and Online Tools IEA-GIA ExCo - National Geothermal Data System and Online Tools National Geothermal Data System presentation by Jay...

  6. Creation of an Engineered Geothermal System through Hydraulic and Thermal

    Broader source: Energy.gov (indexed) [DOE]

    Stimulation | Department of Energy Project objectives: To create an Enhanced Geothermal System on the margin of the Cosofield through the hydraulic, thermal, and/or chemical stimulation of one or more tight injection wells; To increase the productivity of the Cosofield by 10 MWe; To develop and calibrate geomechanical, geochemical, and fluid flow models in order to extend the Coso/EGS concepts to wherever appropriate tectonic and thermal conditions apply. PDF icon

  7. Temporary Cementitious Sealers in Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Sugama T.; Pyatina, T.; Butcher, T.; Brothers, L.; Bour, D.

    2011-12-31

    Unlike conventional hydrothennal geothermal technology that utilizes hot water as the energy conversion resources tapped from natural hydrothermal reservoir located at {approx}10 km below the ground surface, Enhanced Geothermal System (EGS) must create a hydrothermal reservoir in a hot rock stratum at temperatures {ge}200 C, present in {approx}5 km deep underground by employing hydraulic fracturing. This is the process of initiating and propagating a fracture as well as opening pre-existing fractures in a rock layer. In this operation, a considerable attention is paid to the pre-existing fractures and pressure-generated ones made in the underground foundation during drilling and logging. These fractures in terms of lost circulation zones often cause the wastage of a substantial amount of the circulated water-based drilling fluid or mud. Thus, such lost circulation zones must be plugged by sealing materials, so that the drilling operation can resume and continue. Next, one important consideration is the fact that the sealers must be disintegrated by highly pressured water to reopen the plugged fractures and to promote the propagation of reopened fractures. In response to this need, the objective of this phase I project in FYs 2009-2011 was to develop temporary cementitious fracture sealing materials possessing self-degradable properties generating when {ge} 200 C-heated scalers came in contact with water. At BNL, we formulated two types of non-Portland cementitious systems using inexpensive industrial by-products with pozzolanic properties, such as granulated blast-furnace slag from the steel industries, and fly ashes from coal-combustion power plants. These byproducts were activated by sodium silicate to initiate their pozzolanic reactions, and to create a cemetitious structure. One developed system was sodium silicate alkali-activated slag/Class C fly ash (AASC); the other was sodium silicate alkali-activated slag/Class F fly ash (AASF) as the binder of temper-try sealers. Two specific additives without sodium silicate as alkaline additive were developed in this project: One additive was the sodium carboxymethyl cellulose (CMC) as self-degradation promoting additive; the other was the hard-burned magnesium oxide (MgO) made from calcinating at 1,000-1,500 C as an expansive additive. The AASC and AASF cementitious sealers made by incorporating an appropriate amount of these additives met the following six criteria: 1) One dry mix component product; 2) plastic viscosity, 20 to 70 cp at 300 rpm; 3) maintenance of pumpability for at least 1 hour at 85 C; 4) compressive strength >2000 psi; 5) self-degradable by injection with water at a certain pressure; and 6) expandable and swelling properties; {ge}0.5% of total volume of the sealer.

  8. Environmental impacts during geothermal development: Some examples from Central America

    SciTech Connect (OSTI)

    Goff, S.; Goff, F.

    1997-04-01

    The impacts of geothermal development projects are usually positive. However, without appropriate monitoring plans and mitigation actions firmly incorporated into the project planning process, there exists the potential for significant negative environmental impacts. The authors present five examples from Central America of environmental impacts associated with geothermal development activities. These brief case studies describe landslide hazards, waste brine disposal, hydrothermal explosions, and air quality issues. Improved Environmental Impact Assessments are needed to assist the developing nations of the region to judiciously address the environmental consequences associated with geothermal development.

  9. Geothermal energy control system and method

    DOE Patents [OSTI]

    Matthews, Hugh B.

    1977-01-01

    A geothermal energy transfer and utilization system makes use of thermal energy stored in hot solute-bearing well water to generate super-heated steam from an injected flow of clean water; the super-heated steam is then used for operating a turbine-driven pump at the well bottom for pumping the hot solute-bearing water at high pressure and in liquid state to the earth's surface, where it is used by transfer of its heat to a closed-loop boiler-turbine-alternator combination for the generation of electrical or other power. Residual concentrated solute-bearing water is pumped back into the earth. The clean cooled water is regenerated at the surface-located system and is returned to the deep well pumping system also for lubrication of a novel bearing arrangement supporting the turbine-driven pump system. The bearing system employs liquid lubricated thrust and radial bearings with all bearing surfaces bathed in clean water serving as a lubricant and maintained under pressure to prevent entry into the bearings of contaminated geothermal fluid, an auxiliary thrust ball bearing arrangement comes into operation when starting or stopping the pumping system.

  10. AASG State Geothermal Data Repository for the National Geothermal Data System.

    Energy Science and Technology Software Center (OSTI)

    2012-01-01

    This Drupal metadata and documents capture and management system is a repository, used for maintenance of metadata which describe resources contributed to the AASG State Geothermal Data System. The repository also provides an archive for files that are not hosted by the agency contributing the resource. Data from all 50 state geological surveys is represented here, and is contributed in turn to the National Geothermal Data System.

  11. Geothermal pipeline: Progress and development update geothermal progress monitor

    SciTech Connect (OSTI)

    1994-03-01

    This two-hour conference will provide information for audiences of school officials, designers, utility personnel, and others interested in economical, energy-efficient, and environmentally beneficial heating and cooling for schools. The April 28, 1994 teleconference will focus on applications of GHPs in school buildings, including elementary, secondary, and post-secondary schools. Program content will include case studies of successful GHP installations in a number of different building types and climates as well as interviews with designers, school administrators, and technical experts. Emphasis will be on the comfort, flexibility, economy, ease of maintenance, and other benefits of GHPs in schools. There will be opportunity for downsite participants to telephone questions to GHP authorities, experienced school administrators, designers, and installers who will be in the teleconference studio. This document also discusses a new funding cycle of the Geothermal Energy Program by the California Energy Commission and a shared energy savings project which recently received funding from the Corps of Engineers in Fort Polk, Louisiana.

  12. Geothermal Program Review VII: proceedings. DOE Research and Development for the Geothermal Marketplace

    SciTech Connect (OSTI)

    Not Available

    1989-01-01

    Each year the Geothermal Technology Division of the US Department of Energy conducts an indepth review of its entire geothermal R and D program. The 2--3 day conference serves several purposes: a status report on current R and D activities, an assessment of progress and problems, a review of management issues, and a technology transfer opportunity between DOE and the US geothermal industry. This year's conference, Program Review 7, was held in San Francisco on March 21--23, 1989. As indicated by its title, ''DOE Research and Development for the Geothermal Marketplace'', Program Review 7 emphasized developing technologies, concepts, and innovations having potential for commercial application in the foreseeable future. Program Review 7 was comprised of eight sessions including an opening session and a special presentation on the ''Role of Geothermal Energy in Minimizing Global Environmental Problems.'' The five technical sessions covered GTD-sponsored R and D in the areas of hydrothermal (two sessions), hot dry rock, geopressured, and magma. Presentations were made by the relevant field researchers, and sessions were chaired by the appropriate DOE Operations Office Geothermal Program Manager. The technical papers and commentary of invited speakers contained in these Proceedings have been compiled in the order in which they were presented at Program Review 7.

  13. Enhanced Geothermal Systems (EGS) | Open Energy Information

    Open Energy Info (EERE)

    (Published: July 2009) "US DOE 2008 Renewable Energy Data Book" "The Future of Geothermal Energy" 3.0 3.1 3.2 "US DOE EERE Geothermal Technologies Program, Enhanced...

  14. An evaluation of enhanced geothermal systems technology

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    A review of the assumptions and conclusions of the DOE-sponsored 2006 MIT study on "The Future of Geothermal Energy" and an evaluation of relevant technology from the commercial geothermal industry.

  15. New Geothermal Data System Could Open Up Clean-Energy Reserves...

    Energy Savers [EERE]

    New Geothermal Data System Could Open Up Clean-Energy Reserves New Geothermal Data System Could Open Up Clean-Energy Reserves February 25, 2013 - 2:28pm Addthis New geothermal data...

  16. Tracers for Characterizing Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Karen Wright; George Redden; Carl D. Palmer; Harry Rollins; Mark Stone; Mason Harrup; Laurence C. Hull

    2010-02-01

    Information about the times of thermal breakthrough and subsequent rates of thermal drawdown in enhanced geothermal systems (EGS) is necessary for reservoir management, designing fracture stimulation and well drilling programs, and forecasting economic return. Thermal breakthrough in heterogeneous porous media can be estimated using conservative tracers and assumptions about heat transfer rates; however, tracers that undergo temperature-dependent changes can provide more detailed information about the thermal profile along the flow path through the reservoir. To be effectively applied, the thermal reaction rates of such temperature sensitive traces must be well characterized for the range of conditions that exist in geothermal systems. Reactive tracers proposed in the literature include benzoic and carboxylic acids (Adams) and organic esters and amides (Robinson et al.); however, the practical temperature range over which these tracers can be applied (100-275C) is somewhat limited. Further, for organic esters and amides, little is known about their sorption to the reservoir matrix and how such reactions impact data interpretation. Another approach involves tracers where the reference condition is internal to the tracer itself. Two examples are: 1) racemization of polymeric amino acids, and 2) mineral thermoluminescence. In these cases internal ratios of states are measured rather than extents of degradation and mass loss. Racemization of poly-L-lactic acid (for example) is temperature sensitive and therefore can be used as a temperature-recording tracer depending on the rates of racemization and stability of the amino acids. Heat-induced quenching of thermoluminescence of pre-irradiated LiF can also be used. To protect the tracers from alterations (extraneous reactions, dissolution) in geothermal environments we are encapsulating the tracers in core-shell colloidal structures that will subsequently be tested for their ability to be transported and to protect the tracers from incidental reactions. We review the criteria for practical reactive tracers, which serves as the basis for experimental testing and characterization and can be used to identify other potential candidate tracers. We will also discuss the information obtainable from individual tracers, which has implications for using multiple tracers to obtain information about the thermal history of a reservoir. We will provide an update on our progress for conducting proof-of-principle tests for reactive tracers in the Raft River geothermal system.

  17. Geothermal

    Office of Scientific and Technical Information (OSTI)

    Geothermal Geothermal Legacy Collection Search the Geothermal Legacy Collection Search For Terms: Find + Advanced Search × Advanced Search All Fields: Title: Full Text: Bibliographic Data: Creator / Author: Name Name ORCID Search Authors Subject: Identifier Numbers: Research Org: Sponsoring Org: Publication Date: to Update Date: to Sort: Relevance (highest to lowest) Publication Date (newest first) Publication Date (oldest first) Legacy/Non-Legacy: All Legacy Non-Legacy Close Clear All Find

  18. Geothermal

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Geothermal Geothermal Legacy Collection Search the Geothermal Legacy Collection Search For Terms: Find + Advanced Search × Advanced Search All Fields: Title: Full Text: Bibliographic Data: Creator / Author: Name Name ORCID Search Authors Subject: Identifier Numbers: Research Org: Sponsoring Org: Publication Date: to Update Date: to Sort: Relevance (highest to lowest) Publication Date (newest first) Publication Date (oldest first) Legacy/Non-Legacy: All Legacy Non-Legacy Close Clear All Find

  19. US Geothermal Updates Status of Development Projects New Wells...

    Open Energy Info (EERE)

    Hot Springs Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: US Geothermal Updates Status of Development Projects New Wells Drilled at Neal Hot Springs...

  20. Rye Patch geothermal development, hydro-chemistry of thermal...

    Open Energy Info (EERE)

    Patch geothermal development, hydro-chemistry of thermal water applied to resource definition Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Rye Patch...

  1. Geothermal energy control system and method

    DOE Patents [OSTI]

    Matthews, Hugh B.

    1976-01-01

    A geothermal energy transfer and utilization system makes use of thermal energy stored in hot solute-bearing well water to generate super-heated steam from an injected flow of clean water; the super-heated steam is then used for operating a turbine-driven pump at the well bottom for pumping the hot solute-bearing water at high pressure and in liquid state to the earth's surface, where it is used by transfer of its heat to a closed-loop boiler-turbine-alternator combination for the generation of electrical or other power. Residual concentrated solute-bearing water is pumped back into the earth. The clean cooled water is regenerated at the surface-located system and is returned to the deep well pumping system also for lubrication of a novel bearing arrangement supporting the turbine-driven pump system.

  2. Estimating Well Costs for Enhanced Geothermal System Applications

    SciTech Connect (OSTI)

    K. K. Bloomfield; P. T. Laney

    2005-08-01

    The objective of the work reported was to investigate the costs of drilling and completing wells and to relate those costs to the economic viability of enhanced geothermal systems (EGS). This is part of a larger parametric study of major cost components in an EGS. The possibility of improving the economics of EGS can be determined by analyzing the major cost components of the system, which include well drilling and completion. Determining what costs in developing an EGS are most sensitive will determine the areas of research to reduce those costs. The results of the well cost analysis will help determine the cost of a well for EGS development.

  3. Geothermal power development in Hawaii. Volume II. Infrastructure and community-services requirements, Island of Hawaii

    SciTech Connect (OSTI)

    Chapman, G.A.; Buevens, W.R.

    1982-06-01

    The requirements of infrastructure and community services necessary to accommodate the development of geothermal energy on the Island of Hawaii for electricity production are identified. The following aspects are covered: Puna District-1981, labor resources, geothermal development scenarios, geothermal land use, the impact of geothermal development on Puna, labor resource requirments, and the requirements for government activity.

  4. Concept Testing and Development at the Raft River Geothermal Field, Idaho |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Concept Testing and Development at the Raft River Geothermal Field, Idaho Concept Testing and Development at the Raft River Geothermal Field, Idaho Concept Testing and Development at the Raft River Geothermal Field, Idaho presentation at the April 2013 peer review meeting held in Denver, Colorado. PDF icon raft_river_peer2013.pdf More Documents & Publications Concept Testing and Development at the Raft River Geothermal Field, Idaho track 4: enhanced geothermal

  5. Overview of the National Geothermal Data System (NGDS) and DOEs...

    Broader source: Energy.gov (indexed) [DOE]

    RAM Power Courtesy NREL Courtesy GRC 1 Arlene F. Anderson Technology Manager Geothermal Technologies Office Overview of the National Geothermal Data System (NGDS) &...

  6. Solicitation - Geothermal Drilling Development and Well Maintenance Projects

    SciTech Connect (OSTI)

    Sattler, A.R.

    1999-07-07

    Energy (DOE)-industry research and development (R and D) organization, sponsors near-term technology development projects for reducing geothermal drilling and well maintenance costs. Sandia National Laboratories (Albuquerque, NM) administers DOE funds for GDO cost-shared projects and provides technical support. The GDO serves a very important function in fostering geothermal development. It encourages commercialization of emerging, cost-reducing drilling technologies, while fostering a spirit of cooperation among various segments of the geothermal industry. For Sandia, the GDO also serves as a means of identifying the geothermal industry's drilling fuel/or well maintenance problems, and provides an important forum for technology transfer. Successfully completed GDO projects include: the development of a high-temperature borehole televiewer, high-temperature rotating head rubbers, a retrievable whipstock, and a high-temperature/high-pressure valve-changing tool. Ongoing GDO projects include technology for stemming lost circulation; foam cement integrity log interpretation, insulated drill pipe, percussive mud hammers for geothermal drilling, a high-temperature/ high-pressure valve changing tool assembly (adding a milling capability), deformed casing remediation, high- temperature steering tools, diagnostic instrumentation for casing in geothermal wells, and elastomeric casing protectors.

  7. National Geothermal Data System Architecture Design, Testing...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    related information. * Partners - GeoHeat Center (Oregon Institute of Technology); Stanford Geothermal Program (Stanford Univ.); U.S. Geological Survey, Great Basin Center for...

  8. Technology Development and Field Trials of EGS Drilling Systems

    Broader source: Energy.gov [DOE]

    Project objective: Development of drilling systems based upon rock penetration technologies not commonly employed in the geothermal industry.

  9. Geothermal system saving money at fire station | Department of...

    Broader source: Energy.gov (indexed) [DOE]

    A geothermal heating and cooling system has enabled the substation to save taxpayers 15,000 annually when compared to a traditional system. The high temperature of the treatment...

  10. Life-Cycle Analysis Results of Geothermal Systems in Comparison...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Life-Cycle Analysis Results of Geothermal Systems in Comparison to Other Power Systems A life-cycle energy and greenhouse gas emissions analysis has been conducted with Argonne ...

  11. Funding Opportunity: Geothermal Technologies Program Seeks Technologies to Reduce Levelized Cost of Electricity for Hydrothermal Development and EGS

    Broader source: Energy.gov [DOE]

    The Geothermal Technologies Program seeks non-prime mover technologies that have the potential to contribute to reducing the levelized cost of electricity from new hydrothermal development to 6¢/ kWh by 2020 and Enhanced Geothermal Systems (EGS) to 6¢/ kWh by 2030.

  12. Vegetation component of geothermal EIS studies: Introduced plants, ecosystem stability, and geothermal development

    SciTech Connect (OSTI)

    1994-10-01

    This paper contributes new information about the impacts from introduced plant invasions on the native Hawaiian vegetation as consequences of land disturbance and geothermal development activities. In this regard, most geothermal development is expected to act as another recurring source of physical disturbance which favors the spread and maintenance of introduced organisms throughout the region. Where geothermal exploration and development activities extend beyond existing agricultural and residential development, they will become the initial or sole source of disturbance to the naturalized vegetation of the area. Kilauea has a unique ecosystem adapted to the dynamics of a volcanically active landscape. The characteristics of this ecosystem need to be realized in order to understand the major threats to the ecosystem and to evaluate the effects of and mitigation for geothermal development in Puna. The native Puna vegetation is well adapted to disturbances associated with volcanic eruption, but it is ill-adapted to compete with alien plant species in secondary disturbances produced by human activities. Introduced plant and animal species have become a major threat to the continued presence of the native biota in the Puna region of reference.

  13. Design, construction and evaluation of a simulated geothermal flow system

    SciTech Connect (OSTI)

    Mackanic, J.C.

    1980-07-28

    A system was designed and built to simulate the flow from a geothermal well. The simulated flow will be used to power a Lysholm engine, the performance of which will then be evaluated for different simulated geothermal flows. Two main subjects are covered: 1) the design, construction and evaluation of the behavior of the system that simulates the geothermal flow; included in that topic is a discussion of the probable behavior of the Lysholm engine when it is put into operation, and 2) the investigation of the use of dynamic modeling techniques to determine whether they can provide a suitable means for predicting the behavior of the system.

  14. Enhanced Geothermal Systems (EGS) R&D Program: Monitoring EGS-Related Research

    SciTech Connect (OSTI)

    McLarty, Lynn; Entingh, Daniel; Carwile, Clifton

    2000-09-29

    This report reviews technologies that could be applicable to Enhanced Geothermal Systems development. EGS covers the spectrum of geothermal resources from hydrothermal to hot dry rock. We monitored recent and ongoing research, as reported in the technical literature, that would be useful in expanding current and future geothermal fields. The literature review was supplemented by input obtained through contacts with researchers throughout the United States. Technologies are emerging that have exceptional promise for finding fractures in nonhomogeneous rock, especially during and after episodes of stimulation to enhance natural permeability.

  15. An Economic Analysis of the Kilauea Geothermal Development and Inter-Island Cable Project

    SciTech Connect (OSTI)

    1990-03-01

    A study by NEA completed in April 1987 shows that a large scale (500 MW) geothermal development on the big island of Hawaii and the inter-island power transmission cable is economically infeasible. This updated report, utilizing additional information available since 1987, reaches the same conclusion: (1) The state estimate of $1.7 billion for development cost of the geothermal project is low and extremely optimistic. more realistic development costs are shown to be in the range of $3.4 to $4.3 billion and could go as high as $4.6 billion. (2) Compared to alternative sources of power generation, geothermal can be 1.7 to 2.4 times as costly as oil, and 1.2 to 1.7 times as costly as a solar/oil generating system. (3) yearly operation and maintenance costs for the large scale geothermal project are estimated to be 44.7 million, 72% greater than a solar/oil generating system. (4) Over a 40-year period ratepayers could pay, on average, between 1.3 (17.2%) and 2.4 cents (33%) per kWh per year more for electricity produced by geothermal than they are currently paying (even with oil prices stabilizing at $45 per barrel in 2010). (5) A comparable solar/oil thermal energy development project is technologically feasible, could be island specific, and would cost 20% to 40% less than the proposed geothermal development. (6) Conservation is the cheapest alternative of all, can significantly reduce demand, and provides the greatest return to ratepayers. There are better options than geothermal. Before the State commits the people of Hawaii to future indebtedness and unnecessary electricity rate increases, more specific study should be conducted on the economic feasibility, timing, and magnitude of the geothermal project. The California experience at The Geyers points up the fact that it can be a very risky and disappointing proposition. The state should demand that proponents and developers provide specific answers to geothermals troubling questions before they make an irreversible commitment to it. The state should also more carefully assess the potential risks and hazards of volcanic disturbances, the degree of environmental damage that could occur, the future demand for electricity, and the potential of supplying electricity from alternative energy sources, conservation and small scale power units. As they stated in the April 1987 study, to move ahead with rapid large scale geothermal development on Hawaii without thoroughly studying these aspects of its development is ill-advised and economically unsound.

  16. Engineered Geothermal Systems Energy Return On Energy Investment

    SciTech Connect (OSTI)

    Mansure, A J

    2012-12-10

    Energy Return On Investment (EROI) is an important figure of merit for assessing the viability of energy alternatives. Too often comparisons of energy systems use “efficiency” when EROI would be more appropriate. For geothermal electric power generation, EROI is determined by the electricity delivered to the consumer compared to the energy consumed to construct, operate, and decommission the facility. Critical factors in determining the EROI of Engineered Geothermal Systems (EGS) are examined in this work. These include the input energy embodied into the system. Embodied energy includes the energy contained in the materials, as well as, that consumed in each stage of manufacturing from mining the raw materials to assembling the finished system. Also critical are the system boundaries and value of the energy – heat is not as valuable as electrical energy. The EROI of an EGS depends upon a number of factors that are currently unknown, for example what will be typical EGS well productivity, as well as, reservoir depth, temperature, and temperature decline rate. Thus the approach developed is to consider these factors as parameters determining EROI as a function of number of wells needed. Since the energy needed to construct a geothermal well is a function of depth, results are provided as a function of well depth. Parametric determination of EGS EROI is calculated using existing information on EGS and US Department of Energy (DOE) targets and is compared to the “minimum” EROI an energy production system should have to be an asset rather than a liability.

  17. Geothermal energy development in the Philippines: An overview

    SciTech Connect (OSTI)

    Sussman, D.; Javellana, S.P.; Benavidez, P.J.

    1993-10-01

    The Philippines is the third largest producer of geothermal electricity after the US and Mexico. Geothermal exploration was started in 1962, and the first large commercial power plants came on-line in 1979 in two fields. By 1984, four geothermal fields had a combined installed capacity of 890 MWe and in 1992 these plants supplied about 20% of the country`s electric needs. Geothermal energy development was stimulated in the mid-1970s by the oil crisis and rapidly growing power demand, government support, available foreign funding, and a combination of private and government investment and technical expertise. However, no new geothermal capacity has been added since 1984, despite the growing demand for energy and the continuing uncertainty in the supply of crude oil. The Philippines` geothermal capacity is expected to expand by 270--1,100 MWe by the end of 1999. Factors that will affect the rate growth in this decade include suitable legislation, environmental requirements, financing, degree of private involvement, politics, inter-island electric grid connections, and viability of the remaining prospects.

  18. 300°C Capable Electronics Platform and Temperature Sensor System For Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    Project objectives: Enable geothermal wellbore monitoring through the development of SiC based electronics and ceramic packaging capable of sustained operation at temperatures up to 300˚C and 10 km depth. Demonstrate the technology with a temperature sensor system.

  19. Development history of the Tiwi geothermal field, Philippines

    SciTech Connect (OSTI)

    Gambill, D.T.; Beraquit, D.B.

    1993-10-01

    Commercial production of electricity from the Tiwi geothermal system began in 1979. In 1982, Tiwi became the world`s first water-dominated system to produce more than 160 MWe. Today the field supplies about 11% of Luzon`s electricity. Initially, the reservoir was single-phase liquid with a small, shallow steam zone on the east side. Temperature reversals in the first wells showed the east to be an outflow zone. As production began, reservoir pressure declined, two-phase conditions developed, and groundwater entered the reservoir from the east. As many productions wells cooled, brine production increased and generation decreased from about 280 MWe in 1983 to about 190 MWe in 1986. Improvements to surface facilities and new wells drilled farther west raised generation to about 280 MWe by mid-1993. Separated brine was first injected into the reservoir, but this lowered steam production; injection is now outside the field.

  20. Characterization of a geothermal system in the Upper Arkansas...

    Open Energy Info (EERE)

    of a geothermal system in the Upper Arkansas Valley Authors T. Blum, K. van Wijk, L. Liberty, M. Batzle, R. Krahenbuhl, A. Revil and R. Reynolds Conference Society of...

  1. How to Utilize the National Geothermal Data System (NGDS) and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Network with "Node-In-A-Box" How to Utilize the National Geothermal Data System (NGDS) and Create Your Own Federated Data Network with "Node-In-A-Box" PDF icon ...

  2. Geothermal Heating and Cooling Systems Featured on NBC Nightly News

    Broader source: Energy.gov [DOE]

    NBC Nightly News recently featured a story on geothermal heating and cooling systems that are providing 30%-70% energy and cost savings for homeowners in Jordan, New York.

  3. Geothermal System Saves Dollars, Makes Sense for Maryland Family

    Broader source: Energy.gov [DOE]

    Derwood, Maryland resident Chris Gearon shares how he used a tax credit from the Recovery Act to help upgrade the heating and cooling system in his home to a geothermal one helping him save money and energy.

  4. Evolution of a Mineralized Geothermal System, Valles Caldera...

    Open Energy Info (EERE)

    Journal Article: Evolution of a Mineralized Geothermal System, Valles Caldera, New Mexico Abstract The 20-km-diam Valles caldera formed at 1.13 Ma and had continuous...

  5. Co-Produced Geothermal Systems | Open Energy Information

    Open Energy Info (EERE)

    Geothermal System: Co-Produced water is the water that is produced as a by-product during oil and gas production. If there is enough water produced at a high enough temperature...

  6. Reservoir Investigations on the Hot Dry Rock Geothermal System...

    Open Energy Info (EERE)

    Investigations on the Hot Dry Rock Geothermal System, Fenton Hill, New Mexico- Tracer Test Results Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference...

  7. Dixie Valley Engineered Geothermal System Exploration Methodology Project, Baseline Conceptual Model Report

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Iovenitti, Joe

    2013-05-15

    The Engineered Geothermal System (EGS) Exploration Methodology Project is developing an exploration approach for EGS through the integration of geoscientific data. The Project chose the Dixie Valley Geothermal System in Nevada as a field laboratory site for methodlogy calibration purposes because, in the public domain, it is a highly characterized geothermal systems in the Basin and Range with a considerable amount of geoscience and most importantly, well data. This Baseline Conceptual Model report summarizes the results of the first three project tasks (1) collect and assess the existing public domain geoscience data, (2) design and populate a GIS database, and (3) develop a baseline (existing data) geothermal conceptual model, evaluate geostatistical relationships, and generate baseline, coupled EGS favorability/trust maps from +1km above sea level (asl) to -4km asl for the Calibration Area (Dixie Valley Geothermal Wellfield) to identify EGS drilling targets at a scale of 5km x 5km. It presents (1) an assessment of the readily available public domain data and some proprietary data provided by Terra-Gen Power, LLC, (2) a re-interpretation of these data as required, (3) an exploratory geostatistical data analysis, (4) the baseline geothermal conceptual model, and (5) the EGS favorability/trust mapping. The conceptual model presented applies to both the hydrothermal system and EGS in the Dixie Valley region.

  8. Dixie Valley Engineered Geothermal System Exploration Methodology Project, Baseline Conceptual Model Report

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Iovenitti, Joe

    The Engineered Geothermal System (EGS) Exploration Methodology Project is developing an exploration approach for EGS through the integration of geoscientific data. The Project chose the Dixie Valley Geothermal System in Nevada as a field laboratory site for methodlogy calibration purposes because, in the public domain, it is a highly characterized geothermal systems in the Basin and Range with a considerable amount of geoscience and most importantly, well data. This Baseline Conceptual Model report summarizes the results of the first three project tasks (1) collect and assess the existing public domain geoscience data, (2) design and populate a GIS database, and (3) develop a baseline (existing data) geothermal conceptual model, evaluate geostatistical relationships, and generate baseline, coupled EGS favorability/trust maps from +1km above sea level (asl) to -4km asl for the Calibration Area (Dixie Valley Geothermal Wellfield) to identify EGS drilling targets at a scale of 5km x 5km. It presents (1) an assessment of the readily available public domain data and some proprietary data provided by Terra-Gen Power, LLC, (2) a re-interpretation of these data as required, (3) an exploratory geostatistical data analysis, (4) the baseline geothermal conceptual model, and (5) the EGS favorability/trust mapping. The conceptual model presented applies to both the hydrothermal system and EGS in the Dixie Valley region.

  9. Impact of geothermal development on stockraising homestead landowners

    SciTech Connect (OSTI)

    Not Available

    1981-04-16

    Surface use and compensation conflicts have developed at the Geysers in California between owners of surface lands acquired under the Stockraising Homestead Act of 1916 and geothermal lessees with the right to develop the mineral interests reserved to the Federal Government. Several recommendations are made to the Secretary of the Interior concerning the problems identified. The following are discussed: conditions at the Geysers concerning geothermal development on stockraising lands that could be considered in regard to compensation, existence or potential for similar conflicts on this land outside the Geysers, protection and compensation provided surface owners in existence of legislation and the need for amendments, and alternative methods for paying compensation.

  10. Protocol for Addressing Induced Seismicity Associated with Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    This Protocol is a living guidance document for geothermal developers, public officials, regulators and the general public that provides a set of general guidelines detailing useful steps to evaluate and manage the effects of induced seismicity related to EGS projects.

  11. Quantum Dot Tracers for Use in Engineered Geothermal Systems

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. Project objective: To develop and demonstrate a new class of tracers„semiconductor nanoparticles(quantum dots)„that offer great promise for use in characterizing fracture networks in EGS reservoirs.

  12. Protocol for Addressing Induced Seismicity Associated with Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Majer, Ernie; Nelson, James; Robertson-Tait, Ann; Savy, Jean; Wong, Ivan

    2012-01-01

    This Protocol is a living guidance document for geothermal developers, public officials, regulators and the general public that provides a set of general guidelines detailing useful steps to evaluate and manage the effects of induced seismicity related to EGS projects.

  13. Heat pump assisted geothermal heating system for Felix Spa, Romania

    SciTech Connect (OSTI)

    Rosca, Marcel; Maghiar, Teodor

    1996-01-24

    The paper presents a pre-feasibility type study of a proposed heat pump assisted geothermal heating system for an average hotel in Felix Spa, Romania. After a brief presentation of the geothermal reservoir, the paper gives the methodology and the results of the technical and economical calculations. The technical and economical viability of the proposed system is discussed in detail in the final part of the paper.

  14. Engineered Geothermal Systems Energy Return On Energy Investment

    Office of Scientific and Technical Information (OSTI)

    EGS EROI - 1 Engineered Geothermal Systems Energy Return On Energy Investment A.J. Mansure, Geothermal Consultant, ajm@q.com Albuquerque, NM 12/10/2012 Key Words: energy, EROI, EGS, efficiency, energy investment, energy return, input energy, energy payback, and net energy. Abstract Energy Return On Investment (EROI) is an important figure of merit for assessing the viability of energy alternatives. Too often comparisons of energy systems use "efficiency" when EROI would be more

  15. Geothermal resource area 9: Nye County. Area development plan

    SciTech Connect (OSTI)

    Pugsley, M.

    1981-01-01

    Geothermal Resource area 9 encompasses all of Nye County, Nevada. Within this area there are many different known geothermal sites ranging in temperature from 70/sup 0/ to over 265/sup 0/ F. Fifteen of the more major sites have been selected for evaluation in this Area Development Plan. Various potential uses of the energy found at each of the resource sites discussed in this Area Development Plan were determined after evaluating the area's physical characteristics, land ownership and land use patterns, existing population and projected growth rates, and transportation facilities, and comparing those with the site specific resource characteristics. The uses considered were divided into five main categories: electrical generation, space heating, recreation, industrial process heat, and agriculture. Within two of these categories certain subdivisions were considered separately. The findings about each of the 15 geothermal sites considered in this Area Development Plan are summarized.

  16. NREL: Dynamic Maps, GIS Data, and Analysis Tools - Geothermal Prospector

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Geothermal Prospector Start exploring U.S. geothermal resources with an easy-to-use map by selecting data layers that are NGDS compatible. Bookmark and Share Geothermal Prospector The Geothermal Prospector mapping tool provides an excellent data resource for visual exploration of geothermal resources using the tools and datasets required to produce and disseminate both exploration gap analysis and Enhanced Geothermal System (EGS) planning and analysis. In 2010, NREL developed Geothermal

  17. Mineral Recovery from Geothermal Fluids | Open Energy Information

    Open Energy Info (EERE)

    Metals and Compounds from Geothermal Fluids California Simbol Mining Corp. Recovery Act: Enhanced Geothermal Systems Component Research and DevelopmentAnalysis Albuquerque, NM,...

  18. U.S. and Australian Advanced Geothermal Projects Face Setbacks

    Broader source: Energy.gov [DOE]

    Efforts to develop and commercialize a new type of geothermal energy, called Enhanced Geothermal Systems (EGS), are facing technical setbacks in both the United States and Australia.

  19. Pinpointing America's Geothermal Resources with Open Source Data...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    April 24, 2014 - 9:23am Addthis The National Geothermal Data System is helping researchers and industry developers cultivate geothermal technology applications in energy and ...

  20. Life-cycle analysis results of geothermal systems in comparison to other power systems.

    SciTech Connect (OSTI)

    Sullivan, J. L.; Clark, C. E.; Han, J.; Wang, M.; Energy Systems

    2010-10-11

    A life-cycle energy and greenhouse gas emissions analysis has been conducted with Argonne National Laboratory's expanded Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET) model for geothermal power-generating technologies, including enhanced geothermal, hydrothermal flash, and hydrothermal binary technologies. As a basis of comparison, a similar analysis has been conducted for other power-generating systems, including coal, natural gas combined cycle, nuclear, hydroelectric, wind, photovoltaic, and biomass by expanding the GREET model to include power plant construction for these latter systems with literature data. In this way, the GREET model has been expanded to include plant construction, as well as the usual fuel production and consumption stages of power plant life cycles. For the plant construction phase, on a per-megawatt (MW) output basis, conventional power plants in general are found to require less steel and concrete than renewable power systems. With the exception of the concrete requirements for gravity dam hydroelectric, enhanced geothermal and hydrothermal binary used more of these materials per MW than other renewable power-generation systems. Energy and greenhouse gas (GHG) ratios for the infrastructure and other life-cycle stages have also been developed in this study per kilowatt-hour (kWh) of electricity output by taking into account both plant capacity and plant lifetime. Generally, energy burdens per energy output associated with plant infrastructure are higher for renewable systems than conventional ones. GHG emissions per kWh of electricity output for plant construction follow a similar trend. Although some of the renewable systems have GHG emissions during plant operation, they are much smaller than those emitted by fossil fuel thermoelectric systems. Binary geothermal systems have virtually insignificant GHG emissions compared to fossil systems. Taking into account plant construction and operation, the GREET model shows that fossil thermal plants have fossil energy use and GHG emissions per kWh of electricity output about one order of magnitude higher than renewable power systems, including geothermal power.

  1. Jobs and Economic Development Impact (JEDI) Model Geothermal User Reference Guide

    SciTech Connect (OSTI)

    Johnson, C.; Augustine, C.; Goldberg, M.

    2012-09-01

    The Geothermal Jobs and Economic Development Impact (JEDI) model, developed through the National Renewable Energy Laboratory (NREL), is an Excel-based user-friendly tools that estimates the economic impacts of constructing and operating hydrothermal and Enhanced Geothermal System (EGS) power generation projects at the local level for a range of conventional and renewable energy technologies. The JEDI Model Geothermal User Reference Guide was developed to assist users in using and understanding the model. This guide provides information on the model's underlying methodology, as well as the parameters and references used to develop the cost data utilized in the model. This guide also provides basic instruction on model add-in features, operation of the model, and a discussion of how the results should be interpreted.

  2. Enhanced Geothermal Systems (EGS) well construction technology evaluation report.

    SciTech Connect (OSTI)

    Capuano, Louis, Jr.; Huh, Michael; Swanson, Robert; Raymond, David Wayne; Finger, John Travis; Mansure, Arthur James; Polsky, Yarom; Knudsen, Steven Dell

    2008-12-01

    Electricity production from geothermal resources is currently based on the exploitation of hydrothermal reservoirs. Hydrothermal reservoirs possess three ingredients critical to present day commercial extraction of subsurface heat: high temperature, in-situ fluid and high permeability. Relative to the total subsurface heat resource available, hydrothermal resources are geographically and quantitatively limited. A 2006 DOE sponsored study led by MIT entitled 'The Future of Geothermal Energy' estimates the thermal resource underlying the United States at depths between 3 km and 10 km to be on the order of 14 million EJ. For comparison purposes, total U.S. energy consumption in 2005 was 100 EJ. The overwhelming majority of this resource is present in geological formations which lack either in-situ fluid, permeability or both. Economical extraction of the heat in non-hydrothermal situations is termed Enhanced or Engineered Geothermal Systems (EGS). The technologies and processes required for EGS are currently in a developmental stage. Accessing the vast thermal resource between 3 km and 10 km in particular requires a significant extension of current hydrothermal practice, where wells rarely reach 3 km in depth. This report provides an assessment of well construction technology for EGS with two primary objectives: (1) Determining the ability of existing technologies to develop EGS wells. (2) Identifying critical well construction research lines and development technologies that are likely to enhance prospects for EGS viability and improve overall economics. Towards these ends, a methodology is followed in which a case study is developed to systematically and quantitatively evaluate EGS well construction technology needs. A baseline EGS well specification is first formulated. The steps, tasks and tools involved in the construction of this prospective baseline EGS well are then explicitly defined by a geothermal drilling contractor in terms of sequence, time and cost. A task and cost based analysis of the exercise is subsequently conducted to develop a deeper understanding of the key technical and economic drivers of the well construction process. Finally, future research & development recommendations are provided and ranked based on their economic and technical significance.

  3. Recovery Act: Geothermal Data Aggregation: Submission of Information into the National Geothermal Data System, Final Report DOE Project DE-EE0002852 June 24, 2014

    SciTech Connect (OSTI)

    Blackwell, David D.; Chickering Pace, Cathy; Richards, Maria C.

    2014-06-24

    The National Geothermal Data System (NGDS) is a Department of Energy funded effort to create a single cataloged source for a variety of geothermal information through a distributed network of databases made available via web services. The NGDS will help identify regions suitable for potential development and further scientific data collection and analysis of geothermal resources as a source for clean, renewable energy. A key NGDS repository or ‘node’ is located at Southern Methodist University developed by a consortium made up of: • SMU Geothermal Laboratory • Siemens Corporate Technology, a division of Siemens Corporation • Bureau of Economic Geology at the University of Texas at Austin • Cornell Energy Institute, Cornell University • Geothermal Resources Council • MLKay Technologies • Texas Tech University • University of North Dakota. The focus of resources and research encompass the United States with particular emphasis on the Gulf Coast (on and off shore), the Great Plains, and the Eastern U.S. The data collection includes the thermal, geological and geophysical characteristics of these area resources. Types of data include, but are not limited to, temperature, heat flow, thermal conductivity, radiogenic heat production, porosity, permeability, geological structure, core geophysical logs, well tests, estimated reservoir volume, in situ stress, oil and gas well fluid chemistry, oil and gas well information, and conventional and enhanced geothermal system related resources. Libraries of publications and reports are combined into a unified, accessible, catalog with links for downloading non-copyrighted items. Field notes, individual temperature logs, site maps and related resources are included to increase data collection knowledge. Additional research based on legacy data to improve quality increases our understanding of the local and regional geology and geothermal characteristics. The software to enable the integration, analysis, and dissemination of this team’s NGDS contributions was developed by Siemens Corporate Technology. The SMU Node interactive application is accessible at http://geothermal.smu.edu. Additionally, files may be downloaded from either http://geothermal.smu.edu:9000/geoserver/web/ or through http://geothermal.smu.edu/static/DownloadFilesButtonPage.htm. The Geothermal Resources Council Library is available at https://www.geothermal-library.org/.

  4. Policy Overview and Options for Maximizing the Role of Policy in Geothermal Electricity Development

    Broader source: Energy.gov [DOE]

    This report explores the effectiveness of the historical and current body of policies in terms of increased geothermal electricity development. Insights are provided into future policies that may drive the market to optimize development of available geothermal electricity resources.

  5. Further Development and Application of GEOFRAC-FLOW to a Geothermal Reservoir

    SciTech Connect (OSTI)

    Einstein, Herbert; Vecchiarelli, Alessandra

    2014-05-01

    GEOFRAC is a three-dimensional, geology-based, geometric-mechanical, hierarchical, stochastic model of natural rock fracture systems. The main characteristics of GEOFRAC are its use of statistical input representing fracture patterns in the field in form of the fracture intensity P32 (fracture area per volume) and the best estimate fracture size E(A). This information can be obtained from boreholes or scanlines on the surface, on the one hand, and from window sampling of fracture traces on the other hand. In the context of this project, “Recovery Act - Decision Aids for Geothermal Systems”, GEOFRAC was further developed into GEOFRAC-FLOW as has been reported in the reports, “Decision Aids for Geothermal Systems - Fracture Pattern Modelling” and “Decision Aids for Geothermal Systems - Fracture Flow Modeling”. GEOFRAC-FLOW allows one to determine preferred, interconnected fracture paths and the flow through them.

  6. Enhanced Geothermal Systems (EGS) R&D Program

    SciTech Connect (OSTI)

    Entingh, Daniel J.

    1999-08-18

    The purpose of this workshop was to develop technical background facts necessary for planning continued research and development of Enhanced Geothermal Systems (EGS). EGS are geothermal reservoirs that require improvement of their permeability or fluid contents in order to achieve economic energy production. The initial focus of this R&D program is devising and testing means to extract additional economic energy from marginal volumes of hydrothermal reservoirs that are already producing commercial energy. By mid-1999, the evolution of the EGS R&D Program, begun in FY 1988 by the U.S. Department of Energy (DOE), reached the stage where considerable expertise had to be brought to bear on what technical goals should be pursued. The main purpose of this Workshop was to do that. The Workshop was sponsored by the Office of Geothermal Technologies of the Department of Energy. Its purpose and timing were endorsed by the EGS National Coordinating Committee, through which the EGS R&D Program receives guidance from members of the U.S. geothermal industry. Section 1.0 of this report documents the EGS R&D Program Review Session. There, managers and researchers described the goals and activities of the program. Recent experience with injection at The Geysers and analysis of downhole conditions at Dixie Valley highlighted this session. Section 2.0 contains a number of technical presentations that were invited or volunteered to illuminate important technical and economic facts and opportunities for research. The emphasis here was on fi.acture creation, detection, and analysis. Section 3.0 documents the initial general discussions of the participants. Important topics that emerged were: Specificity of defined projects, Optimizing cost effectiveness, Main technical areas to work on, Overlaps between EGS and Reservoir Technology R&D areas, Relationship of microseismic events to hydraulic fractures, and Defining criteria for prioritizing research thrusts. Sections 4.0 and 5.0 report the meat of the Workshop. Section 4.0 describes the nomination and clarification of technical thrusts, and Section 5.0 reports the results of prioritizing those thrusts via voting by the participants. Section 6.0 contains two discussions conducted after the work on research thrusts. The topics were ''Simulation'' and ''Stimulation''. A number of technical points that emerged here provide important guidance for both practical field work on EGS systems and for research.

  7. *NEW!* Doubling Geothermal Generation Capacity by 2020: A Strategic

    Energy Savers [EERE]

    Analysis | Department of Energy *NEW!* Doubling Geothermal Generation Capacity by 2020: A Strategic Analysis *NEW!* Doubling Geothermal Generation Capacity by 2020: A Strategic Analysis PDF icon NREL Doubling Geothermal Capacity.pdf More Documents & Publications Geothermal Exploration Policy Mechanisms Offshore Wind Jobs and Economic Development Impacts in the United States: Four Regional Scenarios track 1: systems analysis | geothermal 2015 peer review

  8. Doubling Geothermal Generation Capacity by 2020: A Strategic Analysis |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Doubling Geothermal Generation Capacity by 2020: A Strategic Analysis Doubling Geothermal Generation Capacity by 2020: A Strategic Analysis PDF icon NREL Doubling Geothermal Capacity.pdf More Documents & Publications Geothermal Exploration Policy Mechanisms Offshore Wind Jobs and Economic Development Impacts in the United States: Four Regional Scenarios track 1: systems analysis | geothermal 2015 peer review

  9. Advanced Horizontal Well Recirculation Systems for Geothermal Energy Recovery in Sedimentary and Crystalline Formations

    SciTech Connect (OSTI)

    Bruno, Mike S.; Detwiler, Russell L.; Lao, Kang; Serajian, Vahid; Elkhoury, Jean; Diessl, Julia; White, Nicky

    2012-12-13

    There is increased recognition that geothermal energy resources are more widespread than previously thought, with potential for providing a significant amount of sustainable clean energy worldwide. Recent advances in drilling, completion, and production technology from the oil and gas industry can now be applied to unlock vast new geothermal resources, with some estimates for potential electricity generation from geothermal energy now on the order of 2 million megawatts. The primary objectives of this DOE research effort are to develop and document optimum design configurations and operating practices to produce geothermal power from hot permeable sedimentary and crystalline formations using advanced horizontal well recirculation systems. During Phase I of this research project Terralog Technologies USA and The University of California, Irvine (UCI), have completed preliminary investigations and documentation of advanced design concepts for paired horizontal well recirculation systems, optimally configured for geothermal energy recovery in permeable sedimentary and crystalline formations of varying structure and material properties. We have also identified significant geologic resources appropriate for application of such technology. The main challenge for such recirculation systems is to optimize both the design configuration and the operating practices for cost-effective geothermal energy recovery. These will be strongly influenced by sedimentary formation properties, including thickness and dip, temperature, thermal conductivity, heat capacity, permeability, and porosity; and by working fluid properties.

  10. Geothermal resource area 11, Clark County area development plan

    SciTech Connect (OSTI)

    Pugsley, M.

    1981-01-01

    Geothermal Resource Area 11 includes all of the land in Clark County, Nevada. Within this area are nine geothermal anomalies: Moapa Area, Las Vegas Valley, Black Canyon, Virgin River Narrows, Roger's Springs, Indian Springs, White Rock Springs, Brown's Spring, and Ash Creek Spring. All of the geothermal resources in Clark County have relatively low temperatures. The highest recorded temperature is 145{sup 0}F at Black Canyon. The temperatures of the other resources range from 70 to 90{sup 0}F. Because of the low temperature of the resources and, for the most part, the distance of the resources from any population base, the potential for the development of the resources are considered to be somewhat limited.

  11. track 3: enhanced geothermal systems (EGS) | geothermal 2015...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    drilling and pressurized water to capture energy from ... science and engineering that the private sector ... PDF icon Track3EGS3.6DeepSedimentarySystemsMoore-Al...

  12. Thermoelectric Materials Development for Low Temperature Geothermal Power Generation

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Tim Hansen

    2016-01-29

    Data includes characterization results for novel thermoelectric materials developed specifically for power generation from low temperature geothermal brines. Materials characterization data includes material density, thickness, resistance, Seebeck coefficient. This research was carried out by Novus Energy Partners in Cooperation with Southern Research Institute for a Department of Energy Sponsored Project.

  13. Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Technical Plan

    Broader source: Energy.gov [DOE]

    The Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan presents the status of geothermal energy technologies and details program plans from 2009 through 2015, with program activities through 2025.

  14. Funding Opportunity Announcement Webinar: Technology Advancement for Rapid Development of Geothermal Resources (DE-FOA-0000522)

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's (DOE) Geothermal Technologies Program (the Program) presented a webinar on Thursday, June 23, about its newly released funding opportunity announcement (FOA), Geothermal Technology Advancement for Rapid Development of Resources in the United States.

  15. Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Program Coordination

    Broader source: Energy.gov [DOE]

    The Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan presents the status of geothermal energy technologies and details program plans from 2009 through 2015, with program activities through 2025.

  16. Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Program Benefits

    Broader source: Energy.gov [DOE]

    The Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan presents the status of geothermal energy technologies and details program plans from 2009 through 2015, with program activities through 2025.

  17. Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Appendices

    Broader source: Energy.gov [DOE]

    The Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan presents the status of geothermal energy technologies and details program plans from 2009 through 2015, with program activities through 2025.

  18. Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Introduction

    Broader source: Energy.gov [DOE]

    The Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan presents the status of geothermal energy technologies and details program plans from 2009 through 2015, with program activities through 2025.

  19. Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Foreword

    Broader source: Energy.gov [DOE]

    The Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan presents the status of geothermal energy technologies and details program plans from 2009 through 2015, with program activities through 2025.

  20. Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Program Analysis

    Broader source: Energy.gov [DOE]

    The Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan presents the status of geothermal energy technologies and details program plans from 2009 through 2015, with program activities through 2025.

  1. Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Program Challenges

    Broader source: Energy.gov [DOE]

    The Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan presents the status of geothermal energy technologies and details program plans from 2009 through 2015, with program activities through 2025.

  2. Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Program Management

    Broader source: Energy.gov [DOE]

    The Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan presents the status of geothermal energy technologies and details program plans from 2009 through 2015, with program activities through 2025.

  3. Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan: Executive Summary

    Broader source: Energy.gov [DOE]

    The Geothermal Technologies Program Multi-Year Research, Development and Demonstration Plan presents the status of geothermal energy technologies and details program plans from 2009 through 2015, with program activities through 2025.

  4. Development of a Hydrothermal Spallation Drilling System for...

    Open Energy Info (EERE)

    System for EGS Project Type Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and DevelopmentAnalysis Project Type Topic 2 Drilling Systems Project...

  5. Local population impacts of geothermal energy development in the Geysers: Calistoga region

    SciTech Connect (OSTI)

    Haven, K.F.; Berg, V.; Ladson, Y.W.

    1980-09-01

    The country-level population increase implications of two long-term geothermal development scenarios for the Geysers region in California are addressed. This region is defined to include the counties of Lake, Sonoma, Mendocino and Napa, all four in northern California. The development scenarios include two components: development for electrical energy production and direct use applications. Electrical production scenarios are derived by incorporating current development patterns into previous development scenarios by both industry and research organizations. The scenarios are made county-specific, specific to the type of geothermal system constructed, and are projected through the year 2000. Separate high growth rate and low growth rate scenarios are developed, based on a set of specified assumptions. Direct use scenarios are estimated from the nature of the available resource, existing local economic and demographic patterns, and available experience with various separate direct use options. From the composite development scenarios, required numbers of direct and indirect employees and the resultant in-migration patterns are estimated. In-migration patterns are compared to current county level population and ongoing trends in the county population change for each of the four counties. From this comparison, conclusions are drawn concerning the contributions of geothermal resource development to future population levels and the significance of geothermally induced population increase from a county planning perspective.

  6. Evaluation of noise associated with geothermal development activities. Draft report, 31 July 1979-30 April 1982

    SciTech Connect (OSTI)

    Long, M.; Stern, R.

    1982-01-01

    This volume contains 93 data sheets for noise associated with geothermal development activities and geothermal well drilling noise levels from the long term noise monitoring program.

  7. Calc-silicate mineralization in active geothermal systems

    SciTech Connect (OSTI)

    Bird, D.K.; Schiffman, P.; Elders, W.A.; Williams, A.E.; McDowell, S.D.

    1983-01-01

    The detailed study of calc-silicate mineral zones and coexisting phase relations in the Cerro Prieto geothermal system were used as examples for thermodynamic evaluation of phase relations among minerals of variable composition and to calculate the chemical characteristics of hydrothermal solutions compatible with the observed calc-silicate assemblages. In general there is a close correlation between calculated and observed fluid compositions. Calculated fugacities of O{sub 2} at about 320{degrees}C in the Cerro Prieto geothermal system are about five orders of magnitude less than that at the nearby Salton Sea geothermal system. This observation is consistent with the occurrence of Fe{sup 3+} rich epidotes in the latter system and the presence of prehnite at Cerro Prieto.

  8. Development of an Improved Cement for Geothermal Wells

    SciTech Connect (OSTI)

    Trabits, George

    2015-04-20

    After an oil, gas, or geothermal production well has been drilled, the well must be stabilized with a casing (sections of steel pipe that are joined together) in order to prevent the walls of the well from collapsing. The gap between the casing and the walls of the well is filled with cement, which locks the casing into place. The casing and cementing of geothermal wells is complicated by the harsh conditions of high temperature, high pressure, and a chemical environment (brines with high concentrations of carbon dioxide and sulfuric acid) that degrades conventional Portland cement. During the 1990s and early 2000s, the U.S. Department of Energy’s Geothermal Technologies Office (GTO) provided support for the development of fly-ash-modified calcium aluminate phosphate (CaP) cement, which offers improved resistance to degradation compared with conventional cement. However, the use of CaP cements involves some operational constraints that can increase the cost and complexity of well cementing. In some cases, CaP cements are incompatible with chemical additives that are commonly used to adjust cement setting time. Care must also be taken to ensure that CaP cements do not become contaminated with leftover conventional cement in pumping equipment used in conventional well cementing. With assistance from GTO, Trabits Group, LLC has developed a zeolite-containing cement that performs well in harsh geothermal conditions (thermal stability at temperatures of up to 300°C and resistance to carbonation) and is easy to use (can be easily adjusted with additives and eliminates the need to “sterilize” pumping equipment as with CaP cements). This combination of properties reduces the complexity/cost of well cementing, which will help enable the widespread development of geothermal energy in the United States.

  9. Life-Cycle Analysis Results of Geothermal Systems in Comparison to Other

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Power Systems | Department of Energy Life-Cycle Analysis Results of Geothermal Systems in Comparison to Other Power Systems Life-Cycle Analysis Results of Geothermal Systems in Comparison to Other Power Systems A life-cycle energy and greenhouse gas emissions analysis has been conducted with Argonne National Laboratory's GREET model for geothermal power-generating technologies, including enhanced geothermal, hydrothermal flash, and hydrothermal binary technologies. PDF icon

  10. Residential Vertical Geothermal Heat Pump System Models: Calibration to Data:

    SciTech Connect (OSTI)

    Thornton, Jeff W.; McDowell, T. P.; Shonder, John A; Hughes, Patrick; Pahud, D.; Hellstrom, G.

    1997-06-01

    A detailed component-based simulation model of a geothermal heat pump system has been calibrated to monitored data taken from a family housing unit located at Fort Polk, Louisiana. The simulation model represents the housing unit, geothermal heat pump, ground heat exchanger, thermostat, blower, and ground-loop pump. Each of these component models was 'tuned' to better match the measured data from the site. These tuned models were then interconnect to form the system model. The system model was then exercised in order to demonatrate its capabilities.

  11. Residential vertical geothermal heat pump system models: Calibration to data

    SciTech Connect (OSTI)

    Thornton, J.W.; McDowell, T.P.; Shonder, J.A.; Hughes, P.J.; Pahud, D.; Hellstroem, G.A.J.

    1997-12-31

    A detailed component-based simulation model of a geothermal heat pump system has been calibrated to monitored data taken from a family housing unit located at Fort Polk, Louisiana. The simulation model represents the housing unit, geothermal heat pump, ground heat exchanger, thermostat, blower, and ground-loop pump. Each of these component models was tuned to better match the measured data from the site. These tuned models were then interconnected to form the system model. The system model was then exercised in order to demonstrate its capabilities.

  12. Water Use in the Development and Operation of Geothermal Power Plants

    Broader source: Energy.gov [DOE]

    This report summarizes what is currently known about the life cycle water requirements of geothermal electric power-generating systems and the water quality of geothermal waters. It is part of a larger effort to compare the life cycle impacts of large-scale geothermal electricity generation with other power generation technologies.

  13. A Roadmap for Strategic Development of Geothermal Exploration...

    Broader source: Energy.gov (indexed) [DOE]

    an EGS demonstration project. 2013 Annual Report -- Geothermal Technologies Office Geothermal Technologies Office Annual Report 2012 2013 Peer Review Opening Plenary Presentation...

  14. A History of Geothermal Energy Research and Development in the...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... of DOE's exploration program was directed toward low- to moderate-temperature resources. ... geothermal occurrences in many states A History of Geothermal Energy Research and ...

  15. Development Wells At Long Valley Caldera Geothermal Area (Holt...

    Open Energy Info (EERE)

    the world's first air-cooled binary cycle geothermal power plant.4 References Ben Holt, Richard G. Campbell (1984) Mammoth Geothermal Project Environmental Science Associates...

  16. A History or Geothermal Energy Research and Development in the United

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    States: Energy Conversion 1976-2006 | Department of Energy Energy Conversion 1976-2006 A History or Geothermal Energy Research and Development in the United States: Energy Conversion 1976-2006 A history of geothermal energy R&D in the U.S., 1976-2006 PDF icon geothermal_history_4_conversion.pdf More Documents & Publications Water Use in the Development and Operations of Geothermal Power Plants Water Use in the Development and Operations of Geothermal Power Plants Air-Cooled

  17. National Geothermal Data System Demo 01-28-14 | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Demo 01-28-14 National Geothermal Data System Demo 01-28-14 PDF icon ngds-webinar-azgs.pdf More Documents & Publications How to Utilize the National Geothermal Data System (NGDS) and Create Your Own Federated Data Network with "Node-In-A-Box" State Geological Survey Contributions to the National Geothermal Data System AASG State Geological Survey

  18. IEA-GIA ExCo - National Geothermal Data System and Online Tools |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy IEA-GIA ExCo - National Geothermal Data System and Online Tools IEA-GIA ExCo - National Geothermal Data System and Online Tools National Geothermal Data System presentation by Jay Nathwani at the September 30, 2011 IEA-GIA ExCo conference in London. PDF icon gtp_iea-gia_presentation_nathwani_9-30-11.pdf More Documents & Publications International Partnership for Geothermal Technology - 2012 Peer Review Presentation Innovative Exploration Technologies Subprogram

  19. Accelerating Geothermal Research (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-05-01

    Geothermal research at the National Renewable Energy Laboratory (NREL) is advancing geothermal technologies to increase renewable power production. Continuous and not dependent on weather, the geothermal resource has the potential to jump to more than 500 gigawatts in electricity production, which is equivalent to roughly half of the current U.S. capacity. Enhanced geothermal systems have a broad regional distribution in the United States, allowing the potential for development in many locations across the country.

  20. GTP Adds Meeting on the National Geothermal Data System Project to Peer Review

    Office of Energy Efficiency and Renewable Energy (EERE)

    The design of the National Geothermal Data System (NGDS) was initiated in early fiscal year 2010 to address capturing and providing geothermal data to users -- researchers, industry, state and federal agencies, and the public.

  1. Energy Department Announces $10 Million to Speed Enhanced Geothermal Systems into the Market

    Broader source: Energy.gov [DOE]

    In support President Obama’s all-of-the-above energy strategy, the Energy Department today announced $10 million to improve subsurface characterization for enhanced geothermal systems (EGS) by developing state-of-the-art methods that quantify critical underground reservoir properties as they change over time.

  2. Southwest Alaska Regional Geothermal Energy Project | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Southwest Alaska Regional Geothermal Energy Project Southwest Alaska Regional Geothermal Energy Project Engineered Geothermal Systems Demonstration Projects. Project objectives: ...

  3. Geothermal direct use developments in the United States

    SciTech Connect (OSTI)

    Lienau, P.J.; Culver, G.; Lund, J.W.

    1988-08-01

    Direct heat use of geothermal energy in the United States is recognized as one of the alternative energy resources that has proven itself technically and economically, and is commercially available. Developments include space conditioning of buildings, district heating, groundwater heat pumps, greenhouse heating, industrial processing, aquaculture, and swimming pool heating. Forty-four states have experienced significant geothermal direct use development in the last ten years. The total installed capacity is 5.7 billion Btu/hr (1700 MW/sub t/), with an annual energy use of nearly 17,000 billion Btu/yr (4.5 million barrels of oil energy equivalent). In this report we provide an overview of how and where geothermal energy is used, the extent of that use, the economics and growth trends. The data is based on an extensive site data gathering effort by the Geo-Heat Center in the spring of 1988, under contract to the US Department of Energy. 100 refs., 4 figs., 4 tabs.

  4. NATIONAL GEOTHERMAL DATA SYSTEM: AN EXEMPLAR OF OPEN ACCESS TO DATA

    SciTech Connect (OSTI)

    Blackman, Harold; Blackman, Harold M.; Blackman, Harold M.; Blackman, Harold; Blackman, Harold; Blackman, Harold

    2013-10-01

    The formal launch of National Geothermal Data System (NGDS www.geothermaldata.org) in 2014 will provide open access to technical geothermal-relevant data from all of the Department of Energy- sponsored geothermal development and research projects and geologic data from all 50 states. By making data easily discoverable and accessible this system will open new exploration opportunities and shorten project development. The prototype data system currently includes multiple data nodes, and nationwide data online and available to the public, indexed through a single catalog under construction at http://search.geothermaldata.org. Data from state geological surveys and partners includes more than 5 million records online, including 1.48 million well headers (oil and gas, water, geothermal), 732,000 well logs, and 314,000 borehole temperatures and is growing rapidly. There are over 250 Web services and another 138 WMS (Web Map Services) registered in the system as of August, 2013. Additional data record is being added by companion projects run by Boise State University, Southern Methodist University, and the USGS. The National Renewable Energy Laboratory is managing the Geothermal Data Repository, an NGDS node that will be a clearinghouse for data from hundreds of DOE-funded geothermal projects. NGDS is built on the US Geoscience Information Network (USGIN) data integration framework, which is a joint undertaking of the USGS and the Association of American State Geologists (AASG). NGDS is fully compliant with the White House Executive Order of May 2013, requiring all federal agencies to make their data holdings publicly accessible online in open source, interoperable formats with common core and extensible metadata. The National Geothermal Data System is being designed, built, deployed, and populated primarily with grants from the US Department of Energy, Geothermal Technologies Office. To keep this operational system sustainable after the original implementation will require four core elements: continued serving of data and applications by providers; maintenance of system operations; a governance structure; and an effective business model. Each of these presents a number of challenges currently under consideration.

  5. Panther Canyon Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Canyon Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Panther Canyon Geothermal Project Project Location Information...

  6. Kelsey North Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    North Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Kelsey North Geothermal Project Project Location Information...

  7. Devil's Canyon Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Canyon Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Devil's Canyon Geothermal Project Project Location Information...

  8. Dead Horse Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Horse Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Dead Horse Geothermal Project Project Location Information...

  9. Delcer Butte Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Butte Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Delcer Butte Geothermal Project Project Location Information...

  10. Drum Mountain Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Mountain Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Drum Mountain Geothermal Project Project Location Information...

  11. Puna Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Puna Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Puna Geothermal Project Project Location Information Coordinates...

  12. Puna Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Puna Geothermal Venture) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Puna Geothermal Project Project Location Information Coordinates...

  13. Reese River Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    River Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Reese River Geothermal Project Project Location Information...

  14. Orita 3 Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    3 Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Orita 3 Geothermal Project Project Location Information Coordinates...

  15. Baltazor Springs Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Baltazor Springs Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Baltazor Springs Geothermal Project Project Location...

  16. Silver State Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    State Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Silver State Geothermal Project Project Location Information Coordinates...

  17. Geothermal Energy at the U.S. Department of Energy | Department...

    Energy Savers [EERE]

    be able to develop, test, and accelerate breakthroughs in enhanced geothermal system (EGS) technologies and techniques. Read more Geothermal Data Repository hits important...

  18. Multiparameter fiber optic sensing system for monitoring enhanced geothermal systems

    SciTech Connect (OSTI)

    William A. Challener

    2014-12-04

    The goal of this project was to design, fabricate and test an optical fiber cable which supports multiple sensing modalities for measurements in the harsh environment of enhanced geothermal systems. To accomplish this task, optical fiber was tested at both high temperatures and strains for mechanical integrity, and in the presence of hydrogen for resistance to darkening. Both single mode (SM) and multimode (MM) commercially available optical fiber were identified and selected for the cable based on the results of these tests. The cable was designed and fabricated using a tube-within-tube construction containing two MM fibers and one SM fiber, and without supporting gel that is not suitable for high temperature environments. Commercial fiber optic sensing instruments using Raman DTS (distributed temperature sensing), Brillouin DTSS (distributed temperature and strain sensing), and Raleigh COTDR (coherent optical time domain reflectometry) were selected for field testing. A microelectromechanical systems (MEMS) pressure sensor was designed, fabricated, packaged, and calibrated for high pressure measurements at high temperatures and spliced to the cable. A fiber Bragg grating (FBG) temperature sensor was also spliced to the cable. A geothermal well was selected and its temperature and pressure were logged. The cable was then deployed in the well in two separate field tests and measurements were made on these different sensing modalities. Raman DTS measurements were found to be accurate to ±5°C, even with some residual hydrogen darkening. Brillouin DTSS measurements were in good agreement with the Raman results. The Rayleigh COTDR instrument was able to detect some acoustic signatures, but was generally disappointing. The FBG sensor was used to determine the effects of hydrogen darkening, but drift over time made it unreliable as a temperature or pressure sensor. The MEMS sensor was found to be highly stable and accurate to better than its 0.1% calibration.

  19. New Geothermal Data System Could Open Up Clean-Energy Reserves

    Broader source: Energy.gov [DOE]

    New geothermal data could open up clean energy reserves nationwide. Scientific American reported that the National Geothermal Data System is helping to isolate geothermal prospects, with the goal of fully profiling geologic and geophysical aspects of these deep energy reserves, which will reduce costly investment by better targeting wells.

  20. State Geological Survey Contributions to the National Geothermal Data System- Final Technical Report

    SciTech Connect (OSTI)

    Allison, M. Lee; Richard, Stephen M.

    2015-03-13

    The State Geological Survey Contributions to the National Geothermal Data System project is built on the work of the project managed by Boise State University to design and build the National Geothermal Data System, by deploying it nationwide and populating it with data principally from State Geological Surveys through collaboration with the Association of American State Geologists (AASG). This project subsequently incorporated the results of the design-build and other DOE-funded projects in support of the NGDS. The NGDS (www.geothermaldata.org) provides free open access to millions of data records, images, maps, and reports, sharing relevant geoscience, production, and land use data in 30+ categories to propel geothermal development and production in the U.S. NGDS currently serves information gathered from hundreds of the U.S. Department of Energy sponsored development and research projects and geologic data feeds from 60+ data providers throughout all 50 states. These data are relevant to geothermal energy exploration and development, but also have broad applicability in other areas including natural resources (e.g., energy, minerals, water), natural hazards, and land use and management.

  1. Overview Of The Lake City, California Geothermal System | Open...

    Open Energy Info (EERE)

    : GRC; p. () Related Geothermal Exploration Activities Activities (1) Geothermal Literature Review At Lake City Hot Springs Area (Benoit, Et Al., 2004) Areas (1) Lake City Hot...

  2. Tectonic & Structural Controls of Great Basin Geothermal Systems...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Terranes track 2: hydrothermal | geothermal 2015 peer review Finding Large Aperture Fractures in Geothermal Resource Areas Using a Three-Component Long-Offset Surface Seismic ...

  3. Geophysical Characterization of a Geothermal System Neal Hot...

    Open Energy Info (EERE)

    (Colwell, Et Al., 2012) Micro-Earthquake At Neal Hot Springs Geothermal Area (Nichols & Cole, 2010) Paleomagnetic Measurements At Neal Hot Springs Geothermal Area (London, 2011)...

  4. Utilization of geothermal energy in the mining and processing of tungsten ore. Final report

    SciTech Connect (OSTI)

    Erickson, M.V.; Lacy, S.B.; Lowe, G.D.; Nussbaum, A.M.; Walter, K.M.; Willens, C.A.

    1981-01-01

    The engineering, economic, and environmental feasibility of the use of low and moderate temperature geothermal heat in the mining and processing of tungsten ore is explored. The following are covered: general engineering evaluation, design of a geothermal energy system, economics, the geothermal resource, the institutional barriers assessment, environmental factors, an alternate geothermal energy source, and alternates to geothermal development. (MHR)

  5. EERE Success Story-Optimizing Geothermal with Geo-Solar Hybrid Systems |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Optimizing Geothermal with Geo-Solar Hybrid Systems EERE Success Story-Optimizing Geothermal with Geo-Solar Hybrid Systems May 6, 2015 - 9:10am Addthis The Stillwater geothermal plant is the first hybrid solar geo facility in the nation. In 2014 Enel Green Power added 2 MW of concentrating solar power to the existing geothermal plant and solar photovoltaic field, for a total installed capacity of ~60 MW. Source: Enel Green Power North America The Stillwater geothermal

  6. Geothermal energy development in Washington State. A guide to the federal, state and local regulatory process

    SciTech Connect (OSTI)

    Bloomquist, R.G.; Simpson, S.J.

    1986-03-01

    Washington State's geothermal potential is wide spread. Hot springs and five strato volcanoes existing throughout the Cascade Range, limited hot spring activity on the Olympic Peninsula, and broad reaching, low temperature geothermal resources found in the Columbia Basin comprise the extent of Washington's known geothermal resources. Determination of resource ownership is the first step in proceeding with geothermal exploration and development activities. The federal and state processes are examined from pre-lease activity through leasing and post-lease development concerns. Plans, permits, licenses, and other requirements are addressed for the federal, state, and local level. Lease, permit, and other forms for a number of geothermal exploration and development activities are included. A map of public lands and another displaying the measured geothermal resources throughout the state are provided.

  7. Thermally conductive cementitious grout for geothermal heat pump systems

    DOE Patents [OSTI]

    Allan, Marita

    2001-01-01

    A thermally conductive cement-sand grout for use with a geothermal heat pump system. The cement sand grout contains cement, silica sand, a superplasticizer, water and optionally bentonite. The present invention also includes a method of filling boreholes used for geothermal heat pump systems with the thermally conductive cement-sand grout. The cement-sand grout has improved thermal conductivity over neat cement and bentonite grouts, which allows shallower bore holes to be used to provide an equivalent heat transfer capacity. In addition, the cement-sand grouts of the present invention also provide improved bond strengths and decreased permeabilities. The cement-sand grouts can also contain blast furnace slag, fly ash, a thermoplastic air entraining agent, latex, a shrinkage reducing admixture, calcium oxide and combinations thereof.

  8. Development potential of the Dauin geothermal prospect, Negros Oriental, Philippines

    SciTech Connect (OSTI)

    Bayrante, L.F.; Hermoso, D.Z.; Candelaria, M.R.

    1997-12-31

    The Dauin geothermal prospect, situated 5 km southeast of the Palinpinon I and II sectors, was drilled between 1982 and 1983 to test its viability for development. Drilling results indicated that DN-1 was drilled closer to the source region than DN-2 where permeability, temperature, and alteration mineralogy were generally unpromising. DN-1 encountered temperatures of at least 240{degrees}C and a neutral-pH fluid with reservoir chloride of 3000 mg/kg. In particular, the presence of sulphur in the DN-1 discharge provoked debates and many speculation on the nature of the fluid in the area. The area was re-evaluated in 1996 for the following reasons: (1) Renewed interests on other geothermal prospects within Negros Island from an economic point of view and the success of modular plant developments are Pal II and other areas in the Philippines; (2) Reinterpretation of the genesis of sulphur contained in the DN-1 discharge fluid; (3) Encouraging temperature, permeability and neutral-pH alterations at depth and the neutral character of DN-1 discharge fluid; and (4) Reinterpretation of the hydrological model from a geochemical and geological point of view. The study indicates good potential for modular power development.

  9. Geothermal br Resource br Area Geothermal br Resource br Area...

    Open Energy Info (EERE)

    Aluto Langano Geothermal Area Aluto Langano Geothermal Area East African Rift System Ethiopian Rift Valley Major Normal Fault Basalt MW K Amatitlan Geothermal Area Amatitlan...

  10. A History of Geothermal Energy Research and Development in the United

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    States: Exploration 1976-2006 | Department of Energy Exploration 1976-2006 A History of Geothermal Energy Research and Development in the United States: Exploration 1976-2006 This report summarizes significant research projects performed by the U.S.Department of Energy (DOE)1 over 30 years to overcome challenges inexploration and to make generation of electricity from geothermal resourcesmore cost-competitive. PDF icon geothermal_history_1_exploration.pdf More Documents & Publications

  11. A History or Geothermal Energy Research and Development in the United

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    States: Drilling 1976-2006 | Department of Energy Drilling 1976-2006 A History or Geothermal Energy Research and Development in the United States: Drilling 1976-2006 This report summarizes significant research projects performed by the U.S.Department of Energy (DOE)1 over 30 years to overcome challenges inexploration and to make generation of electricity from geothermal resourcesmore cost-competitive. PDF icon geothermal_history_2_drilling.pdf More Documents & Publications Retrospective

  12. Geopressured geothermal drilling and completions technology development needs

    SciTech Connect (OSTI)

    Maish, A.B.

    1981-03-01

    Geopressured geothermal formations found in the Texas and Louisiana gulf coast region and elsewhere have the potential to supply large quantities of energy in the form of natural gas and warm brine (200 to 300/sup 0/F). Advances are needed, however, in hardware technology, well design technology, and drilling and completion practices to enable production and testing of exploratory wells and to enable economic production of the resource should further development be warranted. This report identifies needed technology for drilling and completing geopressured geothermal source and reinjection wells to reduce the cost and to accelerate commercial recovery of this resource. A comprehensive prioritized list of tasks to develop necessary technology has been prepared. Tasks listed in this report address a wide range of technology needs including new diagnostic techniques, control technologies, hardware, instrumentation, operational procedure guidelines and further research to define failure modes and control techniques. Tasks are organized into the functional areas of well design, drilling, casing installation, cementing, completions, logging, brine reinjection and workovers.

  13. Fracture Characterization in Enhanced Geothermal Systems by Wellbore and Reservoir Analysis

    SciTech Connect (OSTI)

    Horne, Roland N.; Li, Kewen; Alaskar, Mohammed; Ames, Morgan; Co, Carla; Juliusson, Egill; Magnusdottir, Lilja

    2012-06-30

    This report highlights the work that was done to characterize fractured geothermal reservoirs using production data. That includes methods that were developed to infer characteristic functions from production data and models that were designed to optimize reinjection scheduling into geothermal reservoirs, based on these characteristic functions. The characterization method provides a robust way of interpreting tracer and flow rate data from fractured reservoirs. The flow-rate data are used to infer the interwell connectivity, which describes how injected fluids are divided between producers in the reservoir. The tracer data are used to find the tracer kernel for each injector-producer connection. The tracer kernel describes the volume and dispersive properties of the interwell flow path. A combination of parametric and nonparametric regression methods were developed to estimate the tracer kernels for situations where data is collected at variable flow-rate or variable injected concentration conditions. The characteristic functions can be used to calibrate thermal transport models, which can in turn be used to predict the productivity of geothermal systems. This predictive model can be used to optimize injection scheduling in a geothermal reservoir, as is illustrated in this report.

  14. Generic Guide Specification for Geothermal Heat Pump Systems

    SciTech Connect (OSTI)

    Thomas, WKT

    2000-04-12

    The attached Geothermal (Ground-Source) Heat Pump (GHP) Guide Specifications have been developed by Oak Ridge National Laboratory (ORNL) with the intent to assist federal agency sites and engineers in the preparation of construction specifications for GHP projects. These specifications have been developed in the industry-standard Construction Specification Institute (CSI) format and cover several of the most popular members of the family of GHP systems. These guide specifications are applicable to projects whether the financing is with conventional appropriations, arranged by GHP specialty ESCOs under the U.S. Department of Energy's Technology-Specific GHP Super ESPCs, arranged by utilities under Utility Energy Service Contracts (UESCs) or arranged by generalist ESCOs under the various regional ESPCs. These specifications can provide several benefits to the end user that will help ensure successful GHP system installations. GHP guide specifications will help to streamline the specification development, review, and approval process because the architecture and engineering (AE) firm will be working from the familiar CSI format instead of developing the specifications from other sources. The guide specifications help to provide uniformity, standardization, and consistency in both the construction specifications and system installations across multiple federal sites. This standardization can provide future benefits to the federal sites in respect to both maintenance and operations. GHP guide specifications can help to ensure that the agency is getting its money's worth from the GHP system by preventing the use of marginal or inferior components and equipment. The agency and its AE do not have to start from scratch when developing specifications and can use the specification as a template and/or a checklist in developing both the design and the contract documents. The guide specifications can save project costs by reducing the engineering effort required during the design development phase. Use of this guide specification for any project is strictly optional and at the discretion of the responsible party in charge. If used as a construction specification master template for GHP systems, this guide specification must, in all cases, be edited to apply to the specific project in question and to reflect the site-specific conditions relevant to the project. There is no guarantee of accuracy or applicability with respect to any portion of this specification and the user assumes all risk associated with the application of the information contained in this document.

  15. Report to the Legislature on the California Energy Commission's Geothermal Development Grant Program for Local Governments

    SciTech Connect (OSTI)

    Not Available

    1983-04-01

    This report documents the California Energy Commission's administration of its Geothermal Development Grant Program for Local Governments. The Energy Commission established this program as a result of the passage of Assembly Bill 1905 (Bosco) in 1980. This legislation established the mechanism to distribute the state's share of revenues received from the leasing of federal mineral reserves for geothermal development. The federal government deposits these revenues in the Geothermal Resources Development Account (GRDA) created by AB 1905. The state allocates funds from the GRDA to the California Parklands and Renewable Resources Investment Fund, the counties of origin where the federal leases are located, and the Energy Commission. The legislation further directs the Energy Commission to disburse its share as grants to local governments to assist with the planning and development of geothermal resources. Activities which are eligible for funding under the Energy Commission's grant program include resource development projects, planning and feasibility studies, and activities to mitigate the impacts of existing geothermal development.

  16. OHm Geothermal | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search Name: OHm Geothermal Place: Fernley, Nevada Zip: 89408 Sector: Geothermal energy Product: A Nevada-based geothermal energy development company....

  17. Assessment of geothermal development in the Imperial Valley of California. Volume 2. Environmental control technology

    SciTech Connect (OSTI)

    Morris, W.; Hill, J.

    1980-07-01

    Environmental control technologies are essential elements to be included in the overall design of Imperial Valley geothermal power systems. Environmental controls applicable to abatement of hydrogen sulfide emissions, cooling tower drift, noise, liquid and solid wastes, and induced subsidence and seismicity are assessed here. For optimum abatement of H{sub 2}S under a variety of plant operating conditions, removal of H{sub 2}S upstream of the steam turbine is recommended. The environmental impact of cooling tower drift will be closely tied to the quality of cooling water supplies. Conventional noise abatement procedures can be applied and no special research and development are needed. Injection technology constitutes the primary and most essential environmental control and liquid waste disposal technology for Imperial Velley geothermal operations. Subsurface injection of fluids is the primary control for managing induced subsidence. Careful maintenance of injection pressure is expected to control induced seismicity. (MHR)

  18. Advancing reactive tracer methods for measuring thermal evolution in CO2-and water-based geothermal reservoirs

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. This project aims to develop reactive tracer method for monitoring thermal drawdown in enhanced geothermal systems.

  19. SMU Geothermal Conference 2011 - Geothermal Technologies Program

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... Quality Geothermal Data Sets * Technology Assessment of Logging Techniques Systems ... Heat Recovery FOA Energy Efficiency & Renewable Energy eere.energy.gov Geothermal ...

  20. Recovery act. Characterizing structural controls of EGS-candidate and conventional geothermal reservoirs in the Great Basin. Developing successful exploration strategies in extended terranes

    SciTech Connect (OSTI)

    Faulds, James

    2015-06-25

    We conducted a comprehensive analysis of the structural controls of geothermal systems within the Great Basin and adjacent regions. Our main objectives were to: 1) Produce a catalogue of favorable structural environments and models for geothermal systems. 2) Improve site-specific targeting of geothermal resources through detailed studies of representative sites, which included innovative techniques of slip tendency analysis of faults and 3D modeling. 3) Compare and contrast the structural controls and models in different tectonic settings. 4) Synthesize data and develop methodologies for enhancement of exploration strategies for conventional and EGS systems, reduction in the risk of drilling non-productive wells, and selecting the best EGS sites.

  1. Optimizing parameters for predicting the geochemical behavior and performance of discrete fracture networks in geothermal systems

    Broader source: Energy.gov [DOE]

    Optimizing parameters for predicting the geochemical behavior and performance of discrete fracture networks in geothermal systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

  2. Advanced Heat/Mass Exchanger Technology for Geothermal and solar Renewable Energy Systems

    Broader source: Energy.gov [DOE]

    Advanced Heat/Mass Exchanger Technology for Geothermal and solar Renewable Energy Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

  3. National Geothermal Data System State Submissions by Date (Appendix A-1-a)

    SciTech Connect (OSTI)

    Love, Diane

    2015-12-20

    This multipaged spreadsheet tracks submissions of all data records to the State Geological Survey Contributions to the National Geothermal Data System by state and by type.

  4. Enhanced Geothermal Systems (EGS) with CO2as Heat Transmission Fluid

    Broader source: Energy.gov [DOE]

    The overall objective of the research is to explore the feasibility of operating enhanced geothermal systems (EGS) with CO2as heat transmission fluid.

  5. Intergrating Magnetotellurics, Soil Gas Geochemistry and Structural Analysis to Identify Hidden, High Enthalpy, Extensional Geothermal Systems

    Broader source: Energy.gov [DOE]

    Intergrating Magnetotellurics, Soil Gas Geochemistry and Structural Analysis to Identify Hidden, High Enthalpy, Extensional Geothermal Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

  6. Reservoir-Stimulation Optimization with Operational Monitoring for Creation of Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    Reservoir-Stimulation Optimization with Operational Monitoring for Creation of Enhanced Geothermal Systems presentation at the April 2013 peer review meeting held in Denver, Colorado.

  7. Water use in the development and operation of geothermal power plants.

    SciTech Connect (OSTI)

    Clark, C. E.; Harto, C. B.; Sullivan, J. L.; Wang, M. Q.

    2010-09-17

    Geothermal energy is increasingly recognized for its potential to reduce carbon emissions and U.S. dependence on foreign oil. Energy and environmental analyses are critical to developing a robust set of geothermal energy technologies. This report summarizes what is currently known about the life cycle water requirements of geothermal electric power-generating systems and the water quality of geothermal waters. It is part of a larger effort to compare the life cycle impacts of large-scale geothermal electricity generation with other power generation technologies. The results of the life cycle analysis are summarized in a companion report, Life Cycle Analysis Results of Geothermal Systems in Comparison to Other Power Systems. This report is divided into six chapters. Chapter 1 gives the background of the project and its purpose, which is to inform power plant design and operations. Chapter 2 summarizes the geothermal electricity generation technologies evaluated in this study, which include conventional hydrothermal flash and binary systems, as well as enhanced geothermal systems (EGS) that rely on engineering a productive reservoir where heat exists but water availability or permeability may be limited. Chapter 3 describes the methods and approach to this work and identifies the four power plant scenarios evaluated: a 20-MW EGS plant, a 50-MW EGS plant, a 10-MW binary plant, and a 50-MW flash plant. The two EGS scenarios include hydraulic stimulation activities within the construction stage of the life cycle and assume binary power generation during operations. The EGS and binary scenarios are assumed to be air-cooled power plants, whereas the flash plant is assumed to rely on evaporative cooling. The well field and power plant design for the scenario were based on simulations using DOE's Geothermal Economic Technology Evaluation Model (GETEM). Chapter 4 presents the water requirements for the power plant life cycle for the scenarios evaluated. Geology, reservoir characteristics, and local climate have various effects on elements such as drilling rate, the number of production wells, and production flow rates. Over the life cycle of a geothermal power plant, from construction through 30 years of operation, plant operations is where the vast majority of water consumption occurs. Water consumption refers to the water that is withdrawn from a resource such as a river, lake, or non-geothermal aquifer that is not returned to that resource. For the EGS scenarios, plant operations consume between 0.29 and 0.72 gal/kWh. The binary plant experiences similar operational consumption, at 0.27 gal/kWh. Far less water, just 0.01 gal/kWh, is consumed during operations of the flash plant because geofluid is used for cooling and is not replaced. While the makeup water requirements are far less for a hydrothermal flash plant, the long-term sustainability of the reservoir is less certain due to estimated evaporative losses of 14.5-33% of produced geofluid at operating flash plants. For the hydrothermal flash scenario, the average loss of geofluid due to evaporation, drift, and blowdown is 2.7 gal/kWh. The construction stage requires considerably less water: 0.001 gal/kWh for both the binary and flash plant scenarios and 0.01 gal/kWh for the EGS scenarios. The additional water requirements for the EGS scenarios are caused by a combination of factors, including lower flow rates per well, which increases the total number of wells needed per plant, the assumed well depths, and the hydraulic stimulation required to engineer the reservoir. Water quality results are presented in Chapter 5. The chemical composition of geofluid has important implications for plant operations and the potential environmental impacts of geothermal energy production. An extensive dataset containing more than 53,000 geothermal geochemical data points was compiled and analyzed for general trends and statistics for typical geofluids. Geofluid composition was found to vary significantly both among and within geothermal fields. Seven main chemical constituents were found to account for 95-99% of the dissolved solids in typical geofluids. In order of abundance, they were chloride, sodium, bicarbonate, sulfate, silica, calcium, and potassium. The potential for water and soil contamination from accidents and spills was analyzed by comparing geofluid composition with U.S. drinking water standards. Geofluids were found to present a potential risk to drinking water, if released, due to high concentrations of antimony, arsenic, lead, and mercury. That risk could be mitigated through proper design and engineering controls. The concentration and impact of noncondensible gases (NCG) dissolved in the geofluid was evaluated. The majority of NCG was either nitrogen or carbon dioxide, but a small number of geofluids contain potentially recoverable concentrations of hydrogen or methane.

  8. Energy Return On Investment of Engineered Geothermal Systems Data

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Mansure, Chip

    EROI is a ratio of the energy delivered to the consumer to the energy consumed to build, operate, and decommission the facility. EROI is important in assessing the viability of energy alternatives. Currently EROI analyses of geothermal energy are either out-of-date, of uncertain methodology, or presented online with little supporting documentation. This data set is a collection of files documenting data used to calculate the Energy Return On Investment (EROI) of Engineered Geothermal Systems (EGS) and erratum to publications prior to the final report. Final report is available from the OSTI web site (http://www.osti.gov/geothermal/). Data in this collections includes the well designs used, input parameters for GETEM, a discussion of the energy needed to haul materials to the drill site, the baseline mud program, and a summary of the energy needed to drill each of the well designs. EROI is the ratio of the energy delivered to the customer to the energy consumed to construct, operate, and decommission the facility. Whereas efficiency is the ratio of the energy delivered to the customer to the energy extracted from the reservoir.

  9. Energy Return On Investment of Engineered Geothermal Systems Data

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Mansure, Chip

    2012-01-01

    EROI is a ratio of the energy delivered to the consumer to the energy consumed to build, operate, and decommission the facility. EROI is important in assessing the viability of energy alternatives. Currently EROI analyses of geothermal energy are either out-of-date, of uncertain methodology, or presented online with little supporting documentation. This data set is a collection of files documenting data used to calculate the Energy Return On Investment (EROI) of Engineered Geothermal Systems (EGS) and erratum to publications prior to the final report. Final report is available from the OSTI web site (http://www.osti.gov/geothermal/). Data in this collections includes the well designs used, input parameters for GETEM, a discussion of the energy needed to haul materials to the drill site, the baseline mud program, and a summary of the energy needed to drill each of the well designs. EROI is the ratio of the energy delivered to the customer to the energy consumed to construct, operate, and decommission the facility. Whereas efficiency is the ratio of the energy delivered to the customer to the energy extracted from the reservoir.

  10. Niland development project geothermal loan guaranty: 49-MW (net) power plant and geothermal well field development, Imperial County, California: Environmental assessment

    SciTech Connect (OSTI)

    Not Available

    1984-10-01

    The proposed federal action addressed by this environmental assessment is the authorization of disbursements under a loan guaranteed by the US Department of Energy for the Niland Geothermal Energy Program. The disbursements will partially finance the development of a geothermal well field in the Imperial Valley of California to supply a 25-MW(e) (net) power plant. Phase I of the project is the production of 25 MW(e) (net) of power; the full rate of 49 MW (net) would be achieved during Phase II. The project is located on approximately 1600 acres (648 ha) near the city of Niland in Imperial County, California. Well field development includes the initial drilling of 8 production wells for Phase I, 8 production wells for Phase II, and the possible need for as many as 16 replacement wells over the anticipated 30-year life of the facility. Activities associated with the power plant in addition to operation are excavation and construction of the facility and associated systems (such as cooling towers). Significant environmental impacts, as defined in Council on Environmental Quality regulation 40 CFR Part 1508.27, are not expected to occur as a result of this project. Minor impacts could include the following: local degradation of ambient air quality due to particulate and/or hydrogen sulfide emissions, temporarily increased ambient noise levels due to drilling and construction activities, and increased traffic. Impacts could be significant in the event of a major spill of geothermal fluid, which could contaminate groundwater and surface waters and alter or eliminate nearby habitat. Careful land use planning and engineering design, implementation of mitigation measures for pollution control, and design and implementation of an environmental monitoring program that can provide an early indication of potential problems should ensure that impacts, except for certain accidents, will be minimized.

  11. Status of Geothermal Development in Hawaii 1992 | Open Energy...

    Open Energy Info (EERE)

    to reduce its 90% dependency on imported oil for its electricity . The resource on the Big Island of Hawaii appears promising. However, the geothermal program in Hawaii continues...

  12. Research and Development Roadmap. Geothermal (Ground-Source) Heat Pumps

    SciTech Connect (OSTI)

    Goetzler, William; Guernsey, Matt; Kar, Rahul

    2012-10-01

    Roadmap identifying potential activities and technical innovations that may enable substantial improvements in residential and commercial Geothermal Heat Pumps (GHP) installed cost and/or efficiency.

  13. Concept Testing and Development at the Raft River Geothermal...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... Geologic Stetting: Petrologic Studies Plan view Vertical view Elba Quartzite Quartz Monzonite 7 | US DOE Geothermal Office eere.energy.gov Geologic Setting: Water ...

  14. Mammoth Geothermal, A Development History | Open Energy Information

    Open Energy Info (EERE)

    No abstract available. Author R. Campbell Published Journal Geothermal Resources Council Bulletin, 2000 DOI Not Provided Check for DOI availability: http:crossref.org...

  15. Hybrid Cooling Systems for Low-Temperature Geothermal Power Production

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Hybrid Cooling Systems for Low-Temperature Geothermal Power Production Andrea Ashwood and Desikan Bharathan Technical Report NREL/TP-5500-48765 March 2011 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308 Hybrid Cooling Systems for

  16. Hot Dry Rock Geothermal Energy Development Program. Annual report, fiscal year 1979

    SciTech Connect (OSTI)

    Cremer, G.M.; Duffield, R.B.; Smith, M.C.; Wilson, M.G.

    1980-08-01

    The Fenton Hill Project is still the principal center for developing methods, equipment, and instrumentation for creating and utilizing HDR geothermal reservoirs. The search for a second site for a similar experimental system in a different geological environment has been intensified, as have the identification and characterization of other HDR areas that may prove suitable for either experimental or commercial development. The Phase I fracture system was enlarged during FY79. Drilling of the injection well of the Phase II system began at Fenton Hill in April 1979. Environmental monitoring of the Fenton Hill area continued through FY79. The environmental studies indicate that the hot dry rock operations have caused no significant environmental impact. Other supporting activities included rock physics, rock mechanics, fracture mapping, and instrumentation development. Two closely related activities - evaluation of the potential HDR energy resource of the US and the selection of a site for development of a second experimental heat-extraction system generally similar to that at Fenton Hill - have resulted in the collection of geology, hydrology, and heat-flow data on some level of field activity in 30 states. The resource-evaluation activity included reconnaissance field studies and a listing and preliminary characterization of US geothermal areas in which HDR energy extraction methods may be applicable. The selection of Site 2 has taken into account such legal, institutional, and economic factors as land ownership and use, proximity to possible users, permitting and licensing requirements and procedures, environmental issues, areal extent of the geothermal area, and visibility to and apparent interest by potential industrial developers.

  17. Nevada Site Home to Geothermal Community Focused on Expediting Research and Development

    Broader source: Energy.gov [DOE]

    Over the last six years, Brady Hot Springs in Nevada site has become a hotbed of activity for innovative geothermal research and development. With the nearly constant and frequently overlapping research efforts ongoing at the site, a unique community of scientists, engineers, geothermal operators, and utilities has formed.

  18. DOE Leverages Fossil Energy Expertise to Develop and Explore Geothermal Energy Resources

    Broader source: Energy.gov [DOE]

    Focusing on reducing the upfront costs of geothermal development as well as improve its effectiveness, the U.S. Department of Energy today announced plans to leverage oil and gas expertise to test the reliability and efficiency of geothermal power generation at oil and gas fields.

  19. Middlesex Community College Geothermal Project

    SciTech Connect (OSTI)

    Klein, Jessie; Spaziani, Gina

    2013-03-29

    The purpose of the project was to install a geothermal system in the trustees house on the Bedford campus of Middlesex Community College. In partnership with the environmental science faculty, learning activities for environmental science courses were developed to explain geothermal energy and more specifically the newly installed system to Middlesex students. A real-time monitoring system highlights the energy use and generation.

  20. Geothermal energy in the western United States and Hawaii: Resources and projected electricity generation supplies. [Contains glossary and address list of geothermal project developers and owners

    SciTech Connect (OSTI)

    Not Available

    1991-09-01

    Geothermal energy comes from the internal heat of the Earth, and has been continuously exploited for the production of electricity in the United States since 1960. Currently, geothermal power is one of the ready-to-use baseload electricity generating technologies that is competing in the western United States with fossil fuel, nuclear and hydroelectric generation technologies to provide utilities and their customers with a reliable and economic source of electric power. Furthermore, the development of domestic geothermal resources, as an alternative to fossil fuel combustion technologies, has a number of associated environmental benefits. This report serves two functions. First, it provides a description of geothermal technology and a progress report on the commercial status of geothermal electric power generation. Second, it addresses the question of how much electricity might be competitively produced from the geothermal resource base. 19 figs., 15 tabs.

  1. Chemical Energy Carriers (CEC) for the Utilization of Geothermal Energy

    Office of Energy Efficiency and Renewable Energy (EERE)

    DOE Geothermal Peer Review 2010 - Presentation. Project objective: Develop chemical energy carrier (CEC) systems to recover thermal energy from enhanced geothermal systems (EGS) in the form of chemical energy, in addition to sensible and latent energy.

  2. National Geothermal Data System Design and Testing

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    document & rollout Not started 9-13 or 3-14 Service Testing & maintenance Ongoing in software development 9-13 or 3-14 Sustainability plan Draft out for comment 9-13 or 3-14...

  3. Pinpointing America's Geothermal Resources with Open Source Data

    Broader source: Energy.gov [DOE]

    National Geothermal Data System addresses barriers to geothermal deployment by aggregating millions of geoscience datapoints and legacy geothermal research into a nationwide system that serves the geothermal community.

  4. Geothermal rotary separator turbine: wellhead power system tests at Milford, Utah

    SciTech Connect (OSTI)

    Hughes, E.E.

    1983-08-01

    Through development of a separator/expander engine EPRI is improving the efficiency of single flash geothermal power systems. Under cost-shared contracts with Biphase Energy Systems and Utah Power and Light Company (UP and L), a wellhead power generating system has been built and tested. The wellhead unit has been operated for 4000 hours at Roosevelt Hot Springs near Milford, Utah. Phillips Petroleum Company operates the geothermal field at this site. The rotary separator turbine (RST) is a separating expander that increases the resource utilization efficiency by extracting power upstream of a steam turbine in either a 1-stage or 2-stage flash power system. The first power output was achieved October 28, 1981, six weeks after arrival of the RST at the site. The RST system produced 3270 MWh(e) gross and 2770 MWh(e) net to the UP and L grid. Total equivalent power produced by the wellhead RST (actual power output of the RST plus the power obtainable from the steam flow out of the RST) is 15 to 20 percent above the power that would be produced by an optimum 1-stage direct flash plant operated on the same geothermal well.

  5. Enhanced Geothermal System (EGS) Fact Sheet | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Calpine Staff Run Tests at The Geysers Geothermal Power Plant in California Calpine Staff Run Tests at The Geysers Geothermal Power Plant in California The EGS fact sheet provides...

  6. Rotation-Enabled 7-Degree of Freedom Seismometer for Geothermal Resource Development. Phase 1 Final Report

    SciTech Connect (OSTI)

    Pierson, Bob; Laughlin, Darren

    2013-10-29

    Under this Department of Energy (DOE) grant, A-Tech Corporation d.b.a. Applied Technology Associates (ATA), seeks to develop a seven-degree-of-freedom (7-DOF) seismic measurement tool for high-temperature geothermal applications. The Rotational-Enabled 7-DOF Seismometer includes a conventional tri-axial accelerometer, a conventional pressure sensor or hydrophone, and a tri-axial rotational sensor. The rotational sensing capability is novel, based upon ATA's innovative research in rotational sensing technologies. The geothermal industry requires tools for high-precision seismic monitoring of crack formation associated with Enhanced Geothermal System (EGS) stimulation activity. Currently, microseismic monitoring is conducted by deploying many seismic tools at different depth levels along a 'string' within drilled observation wells. Costs per string can be hundreds of thousands of dollars. Processing data from the spatial arrays of linear seismometers allows back-projection of seismic wave states. In contrast, a Rotational-Enabled 7-DOF Seismometer would simultaneously measure p-wave velocity, s-wave velocity, and incident seismic wave direction all from a single point measurement. In addition, the Rotational-Enabled 7-DOF Seismometer will, by its nature, separate p- and s-waves into different data streams, simplifying signal processing and facilitating analysis of seismic source signatures and geological characterization. By adding measurements of three additional degrees-of-freedom at each level and leveraging the information from this new seismic observable, it is likely that an equally accurate picture of subsurface seismic activity could be garnered with fewer levels per hole. The key cost savings would come from better siting of the well due to increased information content and a decrease in the number of confirmation wells drilled, also due to the increase in information per well. Improved seismic tools may also increase knowledge, understanding, and confidence, thus removing some current blocks to feasibility and significantly increasing access to potential geothermal sites. During the Phase 1 effort summarized in this final report, the ATA Team modeled and built two TRL 3 proof-of-concept test units for two competing rotational sensor technologies. The two competing technologies were based on ATA's angular rate and angular displacement measurement technologies; Angular rate: ATA's Magnetohydrodynamic Angular Rate Sensor (Seismic MHD); and Angular displacement: ATA's Low Frequency Improved Torsional Seismometer (LFITS). In order to down-select between these two technologies and formulate a go / no go decision, the ATA Team analyzed and traded scientific performance requirements and market constraints against sensor characteristics and components, acquiring field data where possible to validate the approach and publishing results from these studies of rotational technology capability. Based on the results of Phase 1, the ATA Team finds that the Seismic MHD (SMHD) technology is the best choice for enabling rotational seismometry and significant technical potential exists for micro-seismic monitoring using a downhole 7-DOF device based on the SMHD. Recent technical papers and field data confirm the potential of rotational sensing for seismic mapping, increasing confidence that cost-reduction benefits are achievable for EGS. However, the market for geothermal rotational sensing is small and undeveloped. As a result, this report recommends modifying the Phase 2 plan to focus on prototype development aimed at partnering with early adopters within the geothermal industry and the scientific research community. The highest public benefit will come from development and deployment of a science-grade SMHD rotational seismometer engineered for geothermal downhole conditions and an integrated test tool for downhole measurements at active geothermal test sites.

  7. Prediction of reinjection effects on the Cerro Prieto geothermal system

    SciTech Connect (OSTI)

    Tsang, C.F.; Mangold, D.C.; Doughty, C.; Lippmann, M.J.

    1982-08-10

    The response of the Cerro Prieto geothermal field to different reinjection schemes is predicted using a two-dimensional vertical reservoir model with single- or two-phase flow. The advance of cold fronts and pressure changes in the system associated with the inection operations are computed, taking into consideration the geologic characteristics of the field. The effects of well location, depth, and rates of injection are analyzed. Results indicate that significant pressure maintenance effects may be realized in a carefully designed reinjection operation.

  8. Geothermal pump down-hole energy regeneration system

    DOE Patents [OSTI]

    Matthews, Hugh B.

    1982-01-01

    Geothermal deep well energy extraction apparatus is provided of the general kind in which solute-bearing hot water is pumped to the earth's surface from a subterranean location by utilizing thermal energy extracted from the hot water for operating a turbine motor for driving an electrical power generator at the earth 3 s surface, the solute bearing water being returned into the earth by a reinjection well. Efficiency of operation of the total system is increased by an arrangement of coaxial conduits for greatly reducing the flow of heat from the rising brine into the rising exhaust of the down-well turbine motor.

  9. Ball State University Completes Nation's Largest Ground-Source Geothermal System with Support from Recovery Act

    Broader source: Energy.gov [DOE]

    As part of the Obama Administration's all-of-the-above approach to American energy, the Energy Department today congratulated Ball State University for its campus-wide ground-source geothermal system, the nation's largest geothermal heating and cooling system.

  10. Ball State Completes Largest U.S. Ground-Source Geothermal System

    Broader source: Energy.gov [DOE]

    Ball State University has completed its campus-wide ground-source geothermal system, the nation's largest geothermal heating and cooling system, DOE announced on March 20. DOE played a part in the project by providing a $5 million grant through the American Recovery and Reinvestment Act.

  11. Parametric Analysis of the Factors Controlling the Costs of Sedimentary Geothermal Systems - Preliminary Results (Poster)

    SciTech Connect (OSTI)

    Augustine, C.

    2013-10-01

    Parametric analysis of the factors controlling the costs of sedimentary geothermal systems was carried out using a modified version of the Geothermal Electricity Technology Evaluation Model (GETEM). The sedimentary system modeled assumed production from and injection into a single sedimentary formation.

  12. Leach Hot Springs Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Springs Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Leach Hot Springs Geothermal Project Project Location Information...

  13. Hot Springs Point Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Point Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Hot Springs Point Geothermal Project Project Location Information...

  14. Neal Hot Springs Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Springs Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Neal Hot Springs Geothermal Project Project Location Information...

  15. {open_quotes}Full steam ahead{close_quotes} (a historical review of geothermal power development in the Philippines)

    SciTech Connect (OSTI)

    Gazo, F.M.

    1997-12-31

    The Philippine geothermal energy development is now considered in a state of maturity. After more than 20 years of geothermal experience, the total geothermal installed capacity in the Philippines reached 1,455 MW (1996) or about 12% of the total installed power plant capacity. This also enabled the Philippines to become the second largest producer of geothermal energy in the world. The country`s track record in harnessing geothermal energy is considered a revelation, as it continues with its vision of {open_quotes}full steam ahead{close_quotes}, originally conceived when commercial geothermal operation started in 1973. It is thus proper and timely to refer to historical highlights and experiences in geothermal energy development for planning and implementation of the country`s geothermal energy program.

  16. Hawaii Energy Resource Overviews. Volume 4. Impact of geothermal resource development in Hawaii (including air and water quality)

    SciTech Connect (OSTI)

    Siegel, S.M.; Siegel, B.Z.

    1980-06-01

    The environmental consequences of natural processes in a volcanic-fumerolic region and of geothermal resource development are presented. These include acute ecological effects, toxic gas emissions during non-eruptive periods, the HGP-A geothermal well as a site-specific model, and the geothermal resources potential of Hawaii. (MHR)

  17. Stanford Geothermal Workshop

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Timothy Reinhardt Acting Program Manager Systems Analysis and Low Temperature (SALT) Geothermal Technologies Office Geothermal Vision Study May 11th, 2015 Courtesy GRC Courtesy E ...

  18. Public service impacts of geothermal development: cumulative impacts study of the Geysers KGRA. Final staff report

    SciTech Connect (OSTI)

    Matthews, K.M.

    1983-07-01

    The number of workers currently involved in the various aspects of geothermal development in the Geysers are identified. Using two different development scenarios, projections are made for the number of power plants needed to reach the electrical generation capacity of the steam resource in the Geysers. The report also projects the cumulative number of workers needed to develop the steam field and to construct, operate, and maintain these power plants. Although the number of construction workers fluctuates, most are not likely to become new, permanent residents of the KGRA counties. The administrative and public service costs of geothermal development to local jurisdications are examined, and these costs are compared to geothermal revenues accruing to the local governments. Revenues do not cover the immediate fiscal needs resulting from increases in local road maintenance and school enrollment attributable to geothermal development. Several mitigation options are discussed and a framework presented for calculating mitigation costs for school and road impacts.

  19. Policy Overview and Options for Maximizing the Role of Policy in Geothermal Electricity Development

    SciTech Connect (OSTI)

    Doris, E.; Kreycik, C.; Young, K.

    2009-09-01

    Geothermal electricity production capacity has grown over time because of multiple factors, including its renewable, baseload, and domestic attributes; volatile and high prices for competing technologies; and policy intervention. Overarching federal policies, namely the Public Utilities Regulatory Policies Act (PURPA), provided certainty to project investors in the 1980s, leading to a boom in geothermal development. In addition to market expansion through PURPA, research and development policies provided an investment of public dollars toward developing technologies and reducing costs over time to increase the market competitiveness of geothermal electricity. Together, these efforts are cited as the primary policy drivers for the currently installed capacity. Informing policy decisions depends on the combined impacts of policies at the federal and state level on geothermal development. Identifying high-impact suites of policies for different contexts, and the government levels best equipped to implement them, would provide a wealth of information to both policy makers and project developers.

  20. Recent Developments in Geothermal Drilling Fluids Kelsey, J....

    Office of Scientific and Technical Information (OSTI)

    M. J.; Clements, W. R.; Hilscher, L. W.; Remont, L. J.; Matula, G. W.; Balley, D. N. 01 COAL, LIGNITE, AND PEAT; 15 GEOTHERMAL ENERGY; BENTONITE; BROWN COAL; DRILLING; DRILLING...

  1. Geothermal Energy Research and Development Program; Project Summaries

    SciTech Connect (OSTI)

    1994-03-01

    This is an internal DOE Geothermal Program document. This document contains summaries of projects related to exploration technology, reservoir technology, drilling technology, conversion technology, materials, biochemical processes, and direct heat applications. [DJE-2005

  2. Toward The Development Of Occurrence Models For Geothermal Resources...

    Open Energy Info (EERE)

    in existing fields and grass-roots geothermal exploration Authors A. E. Sabin, J. D. Walker, J. Unruh and F. C. Monastero Published GRC, 2004 DOI Not Provided Check for...

  3. Environmental overview for the development of geothermal resources in the State of New Mexico. Final report

    SciTech Connect (OSTI)

    Bryant, M.; Starkey, A.H.; Dick-Peddie, W.A.

    1980-06-01

    A brief overview of the present day geothermal applications for hydrothermal electrical generation and direct heat use and their environmental implications is provided. Technologies and environmental impacts are considered at all points on the pathway of development resource exploration; well field, plant and transmission line construction; and plant operation. The technologies for electrical generation-direct, dry steam conversion; separated steam conversion; single-flash conversion, separated-steam/single-flash conversion and binary cycle conversion and the technologies for direct heat use - direct use of geothermal waters, surface heat exhanger, down-the hole heat exchanger and heat pump are described. A summary of the geothermal technologies planned or in operation within New Mexico geothermal areas is provided. A review of regulations that affect geothermal development and its related environmental impact in New Mexico is presented. The regulatory pathway, both state and federal, of geothermal exploration after the securing of appropriate leases, development, and construction and implementation of a geothermal facility are described. Six categories (Geophysical, Water, Air, Noise, Biota and Socioeconomics) were selected for environmental assessment. The data available is described.

  4. Geothermal tomorrow 2008

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    Contributors from the Geothermal Technologies Program and the geothermal community highlight the current status and activities of the Program and the development of the global resource of geothermal energy.

  5. Electronic Submersible Pump (ESP) Technology and Limitations with Respect to Geothermal Systems (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-09-01

    The current state of geothermal technology has limitations that hinder the expansion of utility scale power. One limitation that has been discussed by the current industry is the limitation of Electric Submersible Pump (ESP) technology. With the exception of a few geothermal fields artificial lift technology is dominated by line shaft pump (LSP) technology. LSP's utilize a pump near or below reservoir depth, which is attached to a power shaft that is attached to a motor above ground. The primary difference between an LSP and an ESP is that an ESP motor is attached directly to the pump which eliminates the power shaft. This configuration requires that the motor is submersed in the geothermal resource. ESP technology is widely used in oil production. However, the operating conditions in an oil field vary significantly from a geothermal system. One of the most notable differences when discussing artificial lift is that geothermal systems operate at significantly higher flow rates and with the potential addition of Enhanced Geothermal Systems (EGS) even greater depths. The depths and flow rates associated with geothermal systems require extreme horsepower ratings. Geothermal systems also operate in a variety of conditions including but not limited to; high temperature, high salinity, high concentrations of total dissolved solids (TDS), and non-condensable gases.

  6. Geothermal | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Geothermal energy plant at The Geysers near Santa Rosa in Northern California, the world's largest electricity-generating geothermal development. | Photo courtesy of the National...

  7. Director, Geothermal Technologies Office

    Broader source: Energy.gov [DOE]

    The mission of the Geothermal Technologies Office (GTO) is to accelerate the development and deployment of clean, domestic geothermal resources that will promote a stronger, more productive economy...

  8. Marketing the Klamath Falls Geothermal District Heating system

    SciTech Connect (OSTI)

    Rafferty, K.

    1993-06-01

    The new marketing strategy for the Klamath Falls system has concentrated on offering the customer an attractive and easy to understand rate structure, reduced retrofit cost and complexity for his building along with an attractive package of financing and tax credits. Initial retrofit costs and life-cycle cost analysis have been conducted on 22 buildings to date. For some, the retrofit costs are simply too high for the conversion to make sense at current geothermal rates. For many, however, the prospects are good. At this writing, two new customers are now connected and operating with 5 to 8 more buildings committed to connect this construction season after line extensions are completed. This represents nearly a 60% increase in the number of buildings connected to the system and a 40% increase in system revenue.

  9. A review of high-temperature geothermal developments in the Northern...

    Open Energy Info (EERE)

    review of high-temperature geothermal developments in the Northern Basin and Range Province Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: A review of...

  10. MCA 77-4-108 - Water Rights in Connection with Geothermal Development...

    Open Energy Info (EERE)

    search OpenEI Reference LibraryAdd to library Legal Document- StatuteStatute: MCA 77-4-108 - Water Rights in Connection with Geothermal DevelopmentLegal Abstract Statutory...

  11. An assessment of leadership in geothermal energy technology research and development

    SciTech Connect (OSTI)

    Bruch, V.L.

    1994-03-01

    Geothermal energy is one of the more promising renewable energy technologies because it is environmentally benign and, unlike most renewable energy sources, can provide base power. This report provides an assessment of the research and development (R&D) work underway in geothermal energy in the following countries: Denmark, France, Germany, Italy, Japan, Russia, and the United Kingdom. While the R&D work underway in the US exceeds the R&D efforts of the other countries, the lead is eroding. This erosion is due to reductions in federal government funding for geothermal energy R&D and the decline of the US petroleum industry. This erosion of R&D leadership is hindering commercialization of US geothermal energy products and services. In comparison, the study countries are promoting the commercialization of their geothermal energy products and services. As a result, some of these countries, in particular Japan, will probably have the largest share of the global market for geothermal energy products and services; these products and services being targeted toward the developing countries (the largest market for geothermal energy).

  12. Optimization of hybrid-water/air-cooled condenser in an enhanced turbine geothermal ORC system

    Broader source: Energy.gov [DOE]

    DOE Geothermal Program Peer Review 2010 - Presentation. Project objective: To improve the efficiency and output variability of geothermal-based ORC power production systems with minimal water consumption by deploying: 1) a hybrid-water/air cooled condenser with low water consumption and 2) an enhanced turbine with high efficiency.

  13. Research Initiative Will Demonstrate Low Temperature Geothermal Electrical Power Generation Systems Using Oilfield Fluids

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's (DOE) Geothermal Technologies Office (GTO) is announcing a new collaboration with the Office of Fossil Energy (FE) to demonstrate the versatility, reliability, and deployment capabilities of low-temperature geothermal electrical power generation systems using co-produced water from oilfield operations at the Rocky Mountain Oilfield Testing Center (RMOTC) in Wyoming.

  14. DOE 2009 Geothermal Risk Analysis: Methodology and Results (Presentation)

    SciTech Connect (OSTI)

    Young, K. R.; Augustine, C.; Anderson, A.

    2010-02-01

    This presentation summarizes the methodology and results for a probabilistic risk analysis of research, development, and demonstration work-primarily for enhanced geothermal systems (EGS)-sponsored by the U.S. Department of Energy Geothermal Technologies Program.

  15. Geothermal Technology Development Program. Annual progress report, October 1983-September 1984

    SciTech Connect (OSTI)

    Kelsey, J.R.

    1985-08-01

    This report describes the status of ongoing Research and Development (R and D) within the Geothermal Technology Development Program. The work reported is sponsored by the Department of Energy/Geothermal Hydropower Technology Division (DOE/GHTD), with program management provided by Sandia National Laboratories. The program emphasizes research in rock penetration mechanics, fluid technology, borehole mechanics, diagnostics technology, and permeability enhancement. 102 figs., 16 tabs.

  16. Keystone/Mesquite Lake Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Imperial County, NV Geothermal Area South Brawley Geothermal Area Geothermal Region Gulf of California Rift Zone Geothermal Project Profile Developer Ram Power Project Type...

  17. Simulation of Enhanced Geothermal Systems: A Benchmarking and Code Intercomparison Study

    SciTech Connect (OSTI)

    Scheibe, Timothy D.; White, Mark D.; White, Signe K.; Sivaramakrishnan, Chandrika; Purohit, Sumit; Black, Gary D.; Podgorney, Robert; Boyd, Lauren W.; Phillips, Benjamin R.

    2013-06-30

    Numerical simulation codes have become critical tools for understanding complex geologic processes, as applied to technology assessment, system design, monitoring, and operational guidance. Recently the need for quantitatively evaluating coupled Thermodynamic, Hydrologic, geoMechanical, and geoChemical (THMC) processes has grown, driven by new applications such as geologic sequestration of greenhouse gases and development of unconventional energy sources. Here we focus on Enhanced Geothermal Systems (EGS), which are man-made geothermal reservoirs created where hot rock exists but there is insufficient natural permeability and/or pore fluids to allow efficient energy extraction. In an EGS, carefully controlled subsurface fluid injection is performed to enhance the permeability of pre-existing fractures, which facilitates fluid circulation and heat transport. EGS technologies are relatively new, and pose significant simulation challenges. To become a trusted analytical tool for EGS, numerical simulation codes must be tested to demonstrate that they adequately represent the coupled THMC processes of concern. This presentation describes the approach and status of a benchmarking and code intercomparison effort currently underway, supported by the U. S. Department of Energys Geothermal Technologies Program. This study is being closely coordinated with a parallel international effort sponsored by the International Partnership for Geothermal Technology (IPGT). We have defined an extensive suite of benchmark problems, test cases, and challenge problems, ranging in complexity and difficulty, and a number of modeling teams are applying various simulation tools to these problems. The descriptions of the problems and modeling results are being compiled using the Velo framework, a scientific workflow and data management environment accessible through a simple web-based interface.

  18. An Overview of Geothermal Development in Tiwi and Mak-Ban, Philippines

    SciTech Connect (OSTI)

    Raasch, G.D.

    1980-12-16

    Commercial-scale geothermal development in the Philippines began i n 1972 with the completion of the discovery well in the southeastern portion of Luzon Island. A second geothermal anomaly was discovered i n 1975 on the southern flank of Mt . Makiling, forty miles south of Manila. Both fields are being developed and operated by Philippine Geothermal, Inc. (PGI) , a wholly-owned subsidiary of Union Oil Company of California. Currently the Philippines ranks second worldwide in installed geothermal-powered electrical generation capacity with 443 MW and PGI has developed 440 PW of the 443 MW country total. Additional generation capacity is planned or under construction in both fields. Over 1.9 billion kilowatt-hours of electrical power have been produced to date. This represents a savings of approximately three million barrels of imported fuel oil for power generation.

  19. Template:GeothermalProject | Open Energy Information

    Open Energy Info (EERE)

    navigation, search This is the 'GeothermalProject' template. To define a new Geothermal Development Project, please use the Geothermal Development Project Form. Parameters Place...

  20. Newdale Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Geothermal Area Geothermal Region Geothermal Project Profile Developer Standard Steam Trust Project Type Hydrothermal GEA Development Phase Phase I - Resource Procurement and...

  1. Mary's River Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Geothermal Area Geothermal Region Geothermal Project Profile Developer Standard Steam Trust Project Type Hydrothermal GEA Development Phase Phase I - Resource Procurement and...

  2. Coyote Canyon Geothermal Project | Open Energy Information

    Open Energy Info (EERE)

    Geothermal Resource Area Geothermal Region Geothermal Project Profile Developer Terra-Gen Project Type Hydrothermal GEA Development Phase Phase IV - Resource Production and...

  3. Geothermal Technologies Program - Washington

    SciTech Connect (OSTI)

    2005-02-01

    This fact sheets provides a summary of geothermal potential, issues, and current development in Washington State.

  4. DOE and Partners Demonstrate Mobile Geothermal Power System at...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and gas sites to reduce costs for geothermal exploration, drilling, and infrastructure. ... Learn more about the PureCycle technology and about GTO's other projects. Addthis Related ...

  5. Fluid Imaging of Enhanced Geothermal Systems through Joint 3D...

    Open Energy Info (EERE)

    reservoirs that have been created to extract economical amounts of heat from low permeability andor porosity geothermal resources. Critical to the success of EGS is the...

  6. Mapping Fractures In The Medicine Lake Geothermal System | Open...

    Open Energy Info (EERE)

    geothermal resources in the Cascades Authors Steven Clausen, Michal Nemcok, Joseph Moore, Jeffrey Hulen and John Bartley Published GRC, 2006 DOI Not Provided Check for DOI...

  7. Geologic History of the Coso Geothermal System | Open Energy...

    Open Energy Info (EERE)

    presumably due to lower recharge rates. Authors Michael C. Adams, Joseph N. Moore, Steven Bjornstad and David I. Norman Conference World Geothermal Congress;...

  8. Strategies To Detect Hidden Geothermal Systems Based On Monitoring...

    Open Energy Info (EERE)

    techniques with statisticalanalysis and modeling. Authors Jennifer L. Lewicki and Curtis M. Oldenburg Published Journal Geothermal Technologies Legacy Collection, 2005 DOI Not...

  9. Optimizing Geothermal with Geo-Solar Hybrid Systems | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    geothermal plant and solar photovoltaic field, for a total installed capacity of 60 MW. Source: Enel Green Power North America DOE is exploring the potential of using hybrid ...

  10. A Geothermal District-Heating System and Alternative Energy Research...

    Open Energy Info (EERE)

    2 Geothermal Energy Production from Low Temperature Resources, Coproduced Fluids from Oil and Gas Wells, and Geopressured Resources Project Type Topic 3 Low Temperature...

  11. Metal Organic Heat Carriers for Enhanced Geothermal Systems

    Broader source: Energy.gov [DOE]

    DOE Geothermal Program Peer Review 2010 - Presentation. This project addresses Energy Conversion Barrier N -Inability to lower the temperature conditions under which EGS power generation is commercially viable.

  12. Chemical Geothermometers And Mixing Models For Geothermal Systems...

    Open Energy Info (EERE)

    to outline favorable places to explore for geothermal energy. Some of the qualitative methods, such as the delineation of mercury and helium anomalies in soil gases, do not...

  13. Exploration Guides For Active High-Temperature Geothermal Systems...

    Open Energy Info (EERE)

    field (or ore deposit), iv) hydrothermal fluids and their surface expression, and v) geothermal reservoirs as against epithermal orebodies, have enabled us to formulate...

  14. Fracture Propagation and Permeability Change under Poro-thermoelastic Loads & Silica Reactivity in Enhanced Geothermal Systems

    SciTech Connect (OSTI)

    Ahmad Ghassemi

    2009-10-01

    Geothermal energy is recovered by circulating water through heat exchange areas within a hot rock mass. Geothermal reservoir rock masses generally consist of igneous and metamorphic rocks that have low matrix permeability. Therefore, cracks and fractures play a significant role in extraction of geothermal energy by providing the major pathways for fluid flow and heat exchange. Therefore, knowledge of the conditions leading to formation of fractures and fracture networks is of paramount importance. Furthermore, in the absence of natural fractures or adequate connectivity, artificial fractures are created in the reservoir using hydraulic fracturing. Multiple fractures are preferred because of the large size necessary when using only a single fracture. Although the basic idea is rather simple, hydraulic fracturing is a complex process involving interactions of high pressure fluid injections with a stressed hot rock mass, mechanical interaction of induced fractures with existing natural fractures, and the spatial and temporal variations of in-situ stress. As a result, it is necessary to develop tools that can be used to study these interactions as an integral part of a comprehensive approach to geothermal reservoir development, particularly enhanced geothermal systems. In response to this need we have developed advanced poro-thermo-chemo-mechanical fracture models for rock fracture research in support of EGS design. The fracture propagation models are based on a regular displacement discontinuity formulation. The fracture propagation studies include modeling interaction of induced fractures. In addition to the fracture propagation studies, two-dimensional solution algorithms have been developed and used to estimate the impact of pro-thermo-chemical processes on fracture permeability and reservoir pressure. Fracture permeability variation is studied using a coupled thermo-chemical model with quartz reaction kinetics. The model is applied to study quartz precipitation/dissolution, as well as the variation in fracture aperture and pressure. Also, a three-dimensional model of injection/extraction has been developed to consider the impact poro- and thermoelastic stresses on fracture slip and injection pressure. These investigations shed light on the processes involved in the observed phenomenon of injection pressure variation (e.g., in Coso), and allow the assessment of the potential of thermal and chemical stimulation strategies.

  15. Federal Geothermal Research Program Update - Fiscal Year 2004

    SciTech Connect (OSTI)

    Patrick Laney

    2005-03-01

    The Department of Energy (DOE) and its predecessors have conducted research and development (R&D) in geothermal energy since 1971. The Geothermal Technologies Program (GTP) works in partnership with industry to establish geothermal energy as an economically competitive contributor to the U.S. energy supply. Geothermal energy production, a $1.5 billion a year industry, generates electricity or provides heat for direct use applications. The technologies developed by the Geothermal Technologies Program will provide the Nation with new sources of electricity that are highly reliable and cost competitive and do not add to America's air pollution or the emission of greenhouse gases. Geothermal electricity generation is not subject to fuel price volatility and supply disruptions from changes in global energy markets. Geothermal energy systems use a domestic and renewable source of energy. The Geothermal Technologies Program develops innovative technologies to find, access, and use the Nation's geothermal resources. These efforts include emphasis on Enhanced Geothermal Systems (EGS) with continued R&D on geophysical and geochemical exploration technologies, improved drilling systems, and more efficient heat exchangers and condensers. The Geothermal Technologies Program is balanced between short-term goals of greater interest to industry, and long-term goals of importance to national energy interests. The program's research and development activities are expected to increase the number of new domestic geothermal fields, increase the success rate of geothermal well drilling, and reduce the costs of constructing and operating geothermal power plants. These improvements will increase the quantity of economically viable geothermal resources, leading in turn to an increased number of geothermal power facilities serving more energy demand. These new geothermal projects will take advantage of geothermal resources in locations where development is not currently possible or economical.

  16. Federal Geothermal Research Program Update Fiscal Year 2004

    SciTech Connect (OSTI)

    Not Available

    2005-03-01

    The Department of Energy (DOE) and its predecessors have conducted research and development (R&D) in geothermal energy since 1971. The Geothermal Technologies Program (GTP) works in partnership with industry to establish geothermal energy as an economically competitive contributor to the U.S. energy supply. Geothermal energy production, a $1.5 billion a year industry, generates electricity or provides heat for direct use applications. The technologies developed by the Geothermal Technologies Program will provide the Nation with new sources of electricity that are highly reliable and cost competitive and do not add to America's air pollution or the emission of greenhouse gases. Geothermal electricity generation is not subject to fuel price volatility and supply disruptions from changes in global energy markets. Geothermal energy systems use a domestic and renewable source of energy. The Geothermal Technologies Program develops innovative technologies to find, access, and use the Nation's geothermal resources. These efforts include emphasis on Enhanced Geothermal Systems (EGS) with continued R&D on geophysical and geochemical exploration technologies, improved drilling systems, and more efficient heat exchangers and condensers. The Geothermal Technologies Program is balanced between short-term goals of greater interest to industry, and long-term goals of importance to national energy interests. The program's research and development activities are expected to increase the number of new domestic geothermal fields, increase the success rate of geothermal well drilling, and reduce the costs of constructing and operating geothermal power plants. These improvements will increase the quantity of economically viable geothermal resources, leading in turn to an increased number of geothermal power facilities serving more energy demand. These new geothermal projects will take advantage of geothermal resources in locations where development is not currently possible or economical.

  17. About / FAQ | Geothermal

    Office of Scientific and Technical Information (OSTI)

    About About Geothermal The Geothermal Technologies Legacy Collection is available to the geothermal community and interested members of the public who may use this site and its search and knowledge tools to stay better informed of developments in geothermal technology and to gain insights learned from studies in the field since the 1970s. By searching the Geothermal Technologies Legacy Collection, users can expect to find a wealth of geothermal citations and reports from various resources

  18. A History of Geothermal Energy Research and Development in the United

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    States: Reservoir Engineering 1976-2006 | Department of Energy Reservoir Engineering 1976-2006 A History of Geothermal Energy Research and Development in the United States: Reservoir Engineering 1976-2006 This report summarizes significant research projects performed by the U.S. Department of Energy (DOE) over 30 years to overcome challenges in reservoir engineering and to make generation of electricity from geothermal resources more cost-competitive. PDF icon

  19. Geothermal progress monitor report No. 6

    SciTech Connect (OSTI)

    Not Available

    1982-06-01

    Geothermal Progress Monitor Report No. 6 presents a state-by-state summary of the status of geothermal leasing, exploration, and development in major physiographic regions where geothermal resource potential has been identified. Recent state-specific activities are reported at the end of each state status report, while recent activities of a more general nature are summarized briefly in Part II of the report. A list of recent publications of potential interest to the geothermal community and a directory of contributors to the geothermal progress monitoring system are also included.

  20. Geothermal Development and the Use of Categorical Exclusions Under the National Environmental Policy Act of 1969 (Presentation)

    SciTech Connect (OSTI)

    Levine, A.; Young, K. R.

    2014-09-01

    The federal environmental review process under the National Environmental Policy Act of 1969 (NEPA) can be complex and time consuming. Currently, a geothermal developer may have to complete the NEPA process multiple times during the development of a geothermal project. One mechanism to reduce the timeframe of the federal environmental review process for activities that do not have a significant environmental impact is the use of Categorical Exclusions (CXs), which can exempt projects from having to complete an Environmental Assessment or Environmental Impact Statement. This study focuses primarily on the CX process and its applicability to geothermal exploration. In this paper, we: Provide generalized background information on CXs, including previous NEPA reports addressing CXs, the process for developing CXs, and the role of extraordinary circumstances; Examine the history of the Bureau of Land Management's (BLM) geothermal CXs; Compare current CXs for oil, gas, and geothermal energy; Describe bills proposing new statutory CXs; Examine the possibility of standardizing geothermal CXs across federal agencies; and Present analysis from the Geothermal NEPA Database and other sources on the potential for new geothermal exploration CXs. As part of this study, we reviewed Environmental Assessments (EAs) conducted in response to 20 geothermal exploration drilling permit applications (Geothermal Drilling Permits or Notices of Intents) since the year 2001, the majority of which are from the last 5 years. All 20 EAs reviewed for this study resulted in a Finding of No Significant Impact (FONSI). While many of these FONS's involved proponent proposed or federal agency required mitigation, this still suggests it may be appropriate to create or expand an exploration drilling CX for geothermal, which would have a significant impact on reducing geothermal exploration timelines and up-front costs. Ultimately, federal agencies tasked with permitting and completing environmental reviews for geothermal exploration drilling activities and/or legislative representatives are the responsible parties to discuss the merits and implementation of new or revised CXs for geothermal development.