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Sample records for led street lighting

  1. LED Street Lighting

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    21, 2016 LED Street Lighting The American Medical Association's (AMA) recently adopted community guidance on street lighting adds another influential voice to issues that have been discussed in the lighting community for some time now, regarding light at night, its potential impacts on human health and the environment, and how best to minimize those impacts. While the AMA's guidance is intended to reduce the harmful human and environmental effects of street lighting in general, it focuses on

  2. Demonstration of LED Street Lighting

    SciTech Connect

    Kinzey, B. R.; Royer, M. P.; Hadjian, M.; Kauffman, R.

    2013-06-01

    GATEWAY program and Municipal Solid-State Street Lighting Consortium report on a demonstration of LED street lighting in Kansas City, MO.

  3. GATEWAY Demonstrations: LED Street Lighting

    SciTech Connect

    Cook, Tyson; Shackelford, Jordan; Pang, Terrance Pang

    2008-12-01

    This report summarizes an assessment project conducted to study the performance of light emitting diode (LED) luminaires in a street lighting application in San Francisco, CA.

  4. Municipal Consortium LED Street Lighting Workshop Presentations...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    City of Los Angeles Bureau of Street Lighting San Jose's "Smart" LED Streetlights: Controlled Amy Olay, City of San Jose Adaptive Lighting Controls Panel David Bueno, ...

  5. LED Street Lighting Conversion Workshop Presentations

    Office of Energy Efficiency and Renewable Energy (EERE)

    This page provides links to the presentations given at the National League of Cities Mobile Workshop, LED Street Lighting Conversion: Saving Your Community Money, While Improving Public Safety,...

  6. Financing Guidance for LED Street Lighting Programs

    Energy.gov [DOE]

    Financing an LED street lighting replacement program can present a hurdle for many system owners, even if the planned transition offers very favorable economics. Replacing the existing system requires a significant budget, particularly as the scope of the program increases. Cities such as Los Angeles and Seattle have invested many millions of dollars into their (very successful) LED street lighting replacement programs.

  7. Demonstration of LED Street Lighting in Kansas City, MO (Technical...

    Office of Scientific and Technical Information (OSTI)

    Technical Report: Demonstration of LED Street Lighting in Kansas City, MO Citation Details In-Document Search Title: Demonstration of LED Street Lighting in Kansas City, MO Nine ...

  8. Demonstration Assessment of Light Emitting Diode (LED) Street...

    Energy.gov [DOE] (indexed site)

    This report summarizes an LED street lighting assessment project conducted to study the applicability of LED luminaires in a street lighting application. emergingtechreportleds...

  9. Pittsburgh LED Street Lighting Research Project Performance Criteria

    Energy.gov [DOE]

    A Pittsburgh LED Street Lighting Research Project document on Technical and Aesthetic Performance for Business District LED Lighting.

  10. Text-Alternative Version: Evaluating LED Street Lighting Solutions |

    Energy Saver

    Department of Energy Evaluating LED Street Lighting Solutions Text-Alternative Version: Evaluating LED Street Lighting Solutions Below is the text-alternative version of the Evaluating LED Street Lighting Solutions webcast, held July 20, 2010. Edward Smalley: Good morning, everyone. Welcome to the Market Introduction Workshop, and the pre-conference webcast, Evaluating LED Street Lighting Solutions. This morning we have three panelists with us. Todd Rosenbaum from the city of Portland, with

  11. Webcast: Evaluating LED Street Lighting Solutions | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Evaluating LED Street Lighting Solutions Webcast: Evaluating LED Street Lighting Solutions In this July 20, 2010 webcast, Edward Smalley of Seattle City Light provided an update on DOE Municipal Solid-State Street Lighting Consortium activities. The webcast also presented perspectives from members who are involved with implementing LED street lighting evaluations, including Tod Rosinbum of the City of Portland, Oregon, John Walter of National Grid, and Amy Olay of the City of San Jose,

  12. Demonstration of LED Street Lighting in Kansas City, MO Kinzey...

    Office of Scientific and Technical Information (OSTI)

    Street Lighting in Kansas City, MO Kinzey, Bruce R.; Royer, Michael P.; Hadjian, M.; Kauffman, Rick LED streetlighting; field illuminance measurement LED streetlighting; field...

  13. Municipal Consortium LED Street Lighting Workshop Presentations and

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Materials-Boston, MA | Department of Energy Boston, MA Municipal Consortium LED Street Lighting Workshop Presentations and Materials-Boston, MA This page provides links to the presentations given at the DOE Municipal Solid-State Street Lighting Consortium Workshop held in Boston August 2-3, 2012. Workshop Agenda DOE Municipal Solid-State Street Lighting Consortium James Brodrick, U.S. Department of Energy Boston's LED Street Lighting Initiative Joanne Massaro, Glenn Cooper, Matthew Mayrl,

  14. Remaining Barriers to LED Street Lighting

    Energy Saver

    ownership, involving multiple decision-makers * Utilities own 60-70% of street lighting inventory in U.S. * Sometimes more than one utility present in a given metro area * Often...

  15. Considering LEDs for Street and Area Lighting | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Information Resources » Videos » Considering LEDs for Street and Area Lighting Considering LEDs for Street and Area Lighting View Jim Brodrick's keynote video from the September 2009 IES Street and Area Lighting Conference in Philadelphia. View the text-alternative version. Solid-State Lighting Home About the Solid-State Lighting Program Research & Development Understanding SSL Information Resources Conferences & Meetings Presentations Publications Webcasts Videos Tools

  16. Get the Facts: LED Street Lighting | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Get the Facts: LED Street Lighting Get the Facts: LED Street Lighting June 21, 2016 - 12:11pm Addthis The American Medical Association's (AMA) recently adopted community guidance on street lighting adds another influential voice to issues that have been discussed in the lighting community for some time now, regarding light at night, its potential impacts on human health and the environment, and how best to minimize those impacts. While the AMA's guidance is intended to reduce the harmful human

  17. Demonstration Assessment of Light Emitting Diode (LED) Street Lighting, Final Report

    Office of Energy Efficiency and Renewable Energy (EERE)

    This report summarizes an LED street lighting assessment project conducted to study the applicability of LED luminaires in a street lighting application.

  18. Secretary Moniz Applauds Detroit's LED Street Lighting Upgrades |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Applauds Detroit's LED Street Lighting Upgrades Secretary Moniz Applauds Detroit's LED Street Lighting Upgrades June 16, 2014 - 10:46am Addthis Secretary of Energy Ernest Moniz visited Detroit on May 22, 2014, to mark the city's progress installing energy-efficient LED streetlights in an update of its largely broken public lighting system, speaking at the Detroit Area Pre-College Engineering Program. Like so many cities across the country, Detroit is plagued with aging

  19. Municipal Consortium LED Street Lighting Workshop Presentations and

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Materials-Los Angeles, CA | Department of Energy Los Angeles, CA Municipal Consortium LED Street Lighting Workshop Presentations and Materials-Los Angeles, CA This page provides links to the presentations given at the DOE Municipal Solid-State Street Lighting Consortium Workshop held in Los Angeles April 19-20, 2012. Presentations and Materials Workshop Agenda City of Los Angeles: Changing Our Glow for Efficiency Ed Ebrahimian, City of Los Angeles Bureau of Street Lighting L.M. Seventynine:

  20. Municipal Consortium LED Street Lighting Workshop Presentations and

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Materials-Dallas, TX | Department of Energy Dallas, TX Municipal Consortium LED Street Lighting Workshop Presentations and Materials-Dallas, TX This page provides links to the presentations given at the DOE Municipal Solid-State Street Lighting Consortium Workshop held in Dallas March 15-16, 2012. Presentations and Materials Workshop Agenda ONCOR LED Streetlight Pilot & Technical Evaluation Update Michael Navarro, ONCOR Reading, Understanding, and Applying the LM-80 Standard Chad

  1. Municipal Consortium LED Street Lighting Workshop Presentations...

    Energy Saver

    Massaro, Glenn Cooper, Matthew Mayrl, City of Boston System Reliability for Outdoor SSL Tom Bevan, CreeBetaLED Investor Owned Utility Financial Perspective Michael Stevens, ...

  2. Municipal Consortium LED Street Lighting Workshop Presentations...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Presentations and Materials Workshop Agenda ONCOR LED Streetlight Pilot & Technical Evaluation Update Michael Navarro, ONCOR Reading, Understanding, and Applying the LM-80 Standard ...

  3. Demonstration Assessment of Light Emitting Diode (LED) Street Lighting, Phase III Continuation

    SciTech Connect

    Cook, Tyson; Shackelford, Jordan; Johnson, Megan; Pang, Terrance

    2008-11-01

    This report summarizes the third phase of an LED street lighting assessment project in Oakland, California, conducted to study the applicability of LED luminaires in a street lighting application.

  4. Webinar: Get the Facts on LED Street Lighting | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Get the Facts on LED Street Lighting Webinar: Get the Facts on LED Street Lighting During this October 20, 2016 webinar, Bruce Kinzey of Pacific Northwest National Laboratory examined key issues underlying concerns raised by the American Medical Association community guidance on street lighting, and their applicability to LED street lighting. The presentation also provided essential background context related to exposure to light at night and reviewed activities currently being supported by the

  5. Demonstration of LED Street Lighting in Kansas City, MO

    SciTech Connect

    Kinzey, Bruce R.; Royer, Michael P.; Hadjian, M.; Kauffman, Rick

    2013-06-10

    Nine different streetlighting products were installed on various streets in Kansas City, Missouri during February, 2011, to evaluate their performance relative to the incumbent high-pressure sodium (HPS) lighting. The applications investigated included 100 W, 150 W, 250 W, and 400 W HPS installations. Initial measurements and comparisons included power, illuminance, and luminance; sample illuminance readings have continued at each of the nine locations at roughly 1,000-hour operating intervals since then. All of the LED products consumed less power than their HPS counterparts—with a mean difference of 39% and a range of 31% to 51%—but they also emitted 31% fewer lumens, on average. The net result is just a 15% increase in mean efficacy. Applying the city’s stringent light loss factors to the initial measured data meant that five of the LED products (and two of the HPS luminaires) were predicted to eventually fail to meet the specified mean illuminance over their lifetimes; however, the specified light loss levels are not expected to be reached by the LED products until some distant future date (between 12 and 30 years after installation according to manufacturer specification sheet estimates). The practical value of designing streetlighting systems to meet illumination requirements more than 15 years in the future is questioned. Numerous sources of variation in field measurements are noted throughout the report, particularly seasonal influences such as ambient temperature and foliage that are evident in the time-series illuminance data.

  6. Member Case Studies: LED Street Lighting Programs in Algona (IA), Asheville (NC), and Boston (MA)

    Energy.gov [DOE]

    This May 8, 2013 webcast featured presentations from DOE Municipal Solid-State Street Lighting Consortium member cities about their experiences with LED street lighting. Presenters John Bilsten of...

  7. Text-Alternative Version: MSSLC Member Case Studies - LED Street Lighting

    Energy Saver

    Programs Webinar | Department of Energy MSSLC Member Case Studies - LED Street Lighting Programs Webinar Text-Alternative Version: MSSLC Member Case Studies - LED Street Lighting Programs Webinar Below is the text-alternative version of the "MSSLC Member Case Studies - LED Street Lighting Programs" webcast, held May 8, 2013. Edward Smalley: Good morning. Welcome ladies and gentlemen. I'm Edward Smalley with Seattle City Light, Seattle's publicly-owned utility. As Director of the

  8. Demonstration of LED Street Lighting in Kansas City, MO (Technical Report)

    Office of Scientific and Technical Information (OSTI)

    | SciTech Connect Demonstration of LED Street Lighting in Kansas City, MO Citation Details In-Document Search Title: Demonstration of LED Street Lighting in Kansas City, MO Nine different streetlighting products were installed on various streets in Kansas City, Missouri during February, 2011, to evaluate their performance relative to the incumbent high-pressure sodium (HPS) lighting. The applications investigated included 100 W, 150 W, 250 W, and 400 W HPS installations. Initial measurements

  9. Demonstration Assessment of Light-Emitting Diode (LED) Street Lighting Host Site: Lija Loop, Portland, Oregon

    SciTech Connect

    Kinzey, Bruce R.; Myer, Michael

    2009-11-01

    This report describes the process and results of a demonstration of solid-state lighting (SSL) technology in a residential street lighting application, under the U.S. Department of Energy GATEWAY Solid-State Lighting Technology Demonstration Program. In this project, eight 100W (nominal) high-pressure sodium cobra head fixtures were replaced with a like number of LED street light luminaires manufactured by Leotek, Inc. The Leotek product achieved an estimated payback in the Lija Loop installation of about 20 years for replacement scenarios and a much shorter 7.6 years for new installations. Much of the associated energy savings (55%) supporting these payback periods, however, were achieved by reducing average horizontal photopic illuminance a similar amount (53%). Examined from a different perspective, the measured performance suggests that the Leotek product is at approximate parity with the HPS cobra head in terms of average delivered photopic illumination for a given power consumption. HPS comprises the second most efficacious street lighting technology available, exceeded only by low pressure sodium (LPS). LPS technology is not considered suitable for most street lighting applications due to its monochromatic spectral output and poor color rendering ability; therefore, this LED product is performing at an efficiency level comparable to its primary competition in this application.

  10. Member Case Studies: LED Street Lighting Programs in Algona ...

    Energy Saver

    View the presentation slides View the text-alternative version Solid-State Lighting Home About the Solid-State Lighting Program Research & Development Understanding SSL Information ...

  11. Demonstration of LED Street Lighting in Kansas City, MO (Technical...

    Office of Scientific and Technical Information (OSTI)

    not expected to be reached by the LED products until some distant future date (between 12 and 30 years after installation according to manufacturer specification sheet estimates). ...

  12. Demonstration Assessment of Light Emitting Diode (LED) Street...

    Energy Saver

    ... Min Illuminance (fc) Avg. Uniformity Ratio Max. Uniformity Ratio HPS (Entire Test Area) 0.51 2.88 0.00 >10.89:1 >62.00:1 LED (Entire Test Area) 0.88 3.07 0.00 >18.86:1 >66.00:1 ...

  13. LEDs for Street Lighting—Here Today

    SciTech Connect

    2013-11-29

    Fact sheet that provides a brief overview of the viability of LED street lighting in municipalities and highlights case studies of two cities—Los Angeles and Seattle—that have invested in LED street lighting.

  14. Municipal Consortium LED Street Lighting Workshop: April 19–20, Los Angeles, CA

    Energy.gov [DOE]

    Workshop Location: The Sheraton Los Angeles Downtown Hotel, 711 Hope Street, Los Angeles, CA 90017City Partner: City of Los Angeles Bureau of Street LightingCost: $175

  15. Detroit Street Lighting Report | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Detroit Street Lighting Report Detroit Street Lighting Report 2015_restoring-detroit.pdf (929.98 KB) More Documents & Publications LED Roadway Lighting OCTOBER 2015 POSTINGS Demonstration Assessment of Light Emitting Diode (LED) Street Lighting, Final Report

  16. Demonstration Assessment of Light-Emitting Diode (LED) Roadway Lighting on Residential and Commercial Streets in Palo Alto, CA

    SciTech Connect

    Myer, Michael; Kinzey, Bruce R.; Tam, Christine

    2010-06-24

    This report is part of a GATEWAY demonstration that replaced existing HPS streetlights with two different types of LED products and one induction product. Energy savings ranged from 6% to 44%.

  17. Brighter Lights, Safer Streets | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Brighter Lights, Safer Streets Brighter Lights, Safer Streets May 15, 2012 - 5:56pm Addthis Workers install the final LED streetlight for DC's EECBG-funded energy efficient lighting upgrade. | Energy Department photo, credit Chris Galm. Workers install the final LED streetlight for DC's EECBG-funded energy efficient lighting upgrade. | Energy Department photo, credit Chris Galm. Chris Galm Marketing & Communications Specialist, Office of Energy Efficiency & Renewable Energy What does

  18. Cree LED Lighting Solutions Formerly LED Lighting Fixtures LLF...

    OpenEI (Open Energy Information) [EERE & EIA]

    LED Lighting Solutions Formerly LED Lighting Fixtures LLF Jump to: navigation, search Name: Cree LED Lighting Solutions (Formerly LED Lighting Fixtures (LLF)) Place: Morrisville,...

  19. Restoring Detroit's Street Lighting System

    SciTech Connect

    Kinzey, Bruce R.

    2015-10-21

    The City of Detroit is undertaking a comprehensive restoration of its street lighting system that includes transitioning the existing high-pressure sodium (HPS) sources to light-emitting diode (LED). Detroit’s well-publicized financial troubles over the last several years have added many hurdles and constraints to this process. Strategies to overcome these issues have largely been successful, but have also brought some mixed results. This document provides an objective review of the circumstances surrounding the system restoration, the processes undertaken and decisions made, and the results so far.

  20. Prospects for LED lighting.

    SciTech Connect

    Tsao, Jeffrey Yeenien; Gee, James Martin; Simmons, Jerry Alvon

    2003-08-01

    Solid-state lighting using light-emitting diodes (LEDs) has the potential to reduce energy consumption for lighting by 50% while revolutionizing the way we illuminate our homes, work places, and public spaces. Nevertheless, substantial technical challenges remain in order for solid-state lighting to significantly displace the well-developed conventional lighting technologies. We review the potential of LED solid-state lighting to meet the long-term cost goals.

  1. EECBG Success Story: Brighter Lights, Safer Streets | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Brighter Lights, Safer Streets EECBG Success Story: Brighter Lights, Safer Streets May 15, 2012 - 5:56pm Addthis Workers install the final LED streetlight for DC's EECBG-funded energy efficient lighting upgrade. | Energy Department photo, credit Chris Galm. Workers install the final LED streetlight for DC's EECBG-funded energy efficient lighting upgrade. | Energy Department photo, credit Chris Galm. Thanks to support from an Energy Department Recovery Act grant, Washington, DC streets are

  2. DOE Street Lighting Consortium Releases Results of Public Street...

    Energy Saver

    DOE's Municipal Solid-State Street Lighting Consortium (MSSLC) has released the results of a voluntary web-based inventory survey of public street and area lighting across the ...

  3. DOE Municipal Solid-State Street Lighting Consortium | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    DOE Municipal Solid-State Street Lighting Consortium DOE Municipal Solid-State Street Lighting Consortium The DOE Municipal Solid-State Street Lighting Consortium shares technical information and experiences related to LED street and area lighting demonstrations and serves as an objective resource for evaluating new products on the market intended for those applications. Cities, power providers, and others who invest in street and area lighting are invited to join the Consortium and share their

  4. SSL Demonstration: Street Lighting, Kansas City, MO

    SciTech Connect

    2013-08-01

    GATEWAY program report brief summarizing an SSL street lighting demonstration at nine separate installations in Kansas City, MO.

  5. The Recovery Act is "Lighting Up" the streets of Philadelphia

    Energy.gov [DOE]

    The Philadelphia Streets Department is converting 58,000 yellow and green traffic signals and will replace approximately 27,000 red LED lights that have come to the end of their useful life. The...

  6. Webcast: Municipal Solid-State Street Lighting Consortium Retrofit...

    Energy.gov [DOE] (indexed site)

    Laboratory provided a guided walk-through of what the tool can do and how to use it to evaluate costs and benefits associated with converting to LED street and roadway lighting. ...

  7. Commercial Lighting and LED Lighting Incentives | Department...

    Energy.gov [DOE] (indexed site)

    Schools Institutional Savings Category Lighting Lighting ControlsSensors Other EE LED Lighting Maximum Rebate Up to 100% of cost; incentives that exceed 5,000 should be...

  8. LED Lighting | Department of Energy

    Office of Environmental Management (EM)

    comparable or better light quality than other types of lighting. Check out the top 8 things you didn't know about LEDs to learn more. Energy Savings LED is a highly energy...

  9. LED Lighting | Department of Energy

    Office of Environmental Management (EM)

    of lighting in the United States. Residential LEDs -- especially ENERGY STAR rated products -- use at least 75% less energy, and last 25 times longer, than incandescent lighting. ...

  10. LED Lighting | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    focusing light in ways that are useful in homes and commercial settings. The light-emitting diode (LED) is one of today's most energy-efficient and rapidly-developing lighting...

  11. Demonstration Assessment of LED Roadway Lighting: Philadelphia...

    Office of Scientific and Technical Information (OSTI)

    LED Roadway Lighting: Philadelphia, PA Royer, Michael P.; Tuenge, Jason R.; Poplawski, Michael E. Roadway Lighting; Solid-state lighting; LED lighting; SSL; LED; GATEWAY Roadway...

  12. LEDs: The Future of Lighting is Here | Department of Energy

    Energy Saver

    LEDs: The Future of Lighting is Here LEDs: The Future of Lighting is Here February 27, 2012 - 1:19pm Addthis So, what does the little indicator light on your cell phone, a street light, an exit sign, and the common household light bulb have in common? If your answer is that light emitting diode (LED) technology can power all these things, then you're pretty bright. LEDs are a form of solid state lighting. Once the new kid on the block, LEDs have emerged as one of today's most energy-efficient

  13. DOE Street Lighting Consortium Releases Results of Public Street and Area Lighting Inventory Survey

    Office of Energy Efficiency and Renewable Energy (EERE)

    DOE's Municipal Solid-State Street Lighting Consortium (MSSLC) has released the results of a voluntary web-based inventory survey of public street and area lighting across the U.S., conducted...

  14. LED Lighting Facts Snapshot: Indoor Ambient Lighting

    SciTech Connect

    2013-04-01

    LED Lighting Facts Snapshot reports reveal how today's products really perform, drawing on analysis of verified performance data from the program's online product list.

  15. LED Lighting Facts | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Research & Development Technology Application R&D LED Lighting Facts LED Lighting Facts LED lighting facts - A Program of the U.S. DOE DOE's LED Lighting Facts program ...

  16. Metacapacitors for LED Lighting: Metacapacitors

    SciTech Connect

    2010-09-02

    ADEPT Project: The CUNY Energy Institute is developing less expensive, more efficient, smaller, and longer-lasting power converters for energy-efficient LED lights. LEDs produce light more efficiently than incandescent lights and last significantly longer than compact fluorescent bulbs, but they require more sophisticated power converter technology, which increases their cost. LEDs need more sophisticated converters because they require a different type of power (low voltage direct current, or DC) than what's generally supplied by power outlets. The CUNY Energy Institute is developing sophisticated power converters for LEDs that contain capacitors made from new, nanoscale materials. Capacitors are electrical components that are used to store energy. CUNY's unique capacitors are configured with advanced power circuits to more efficiently control and convert power to the LED lighting source. They also eliminate the need for large magnetic components, instead relying on networks of capacitors that can be easily printed on plastic substrate. CUNY's prototype LED power converter already meets DOE's 2020 projections for the energy efficiency of LED power converters.

  17. Philadelphia International Airport Apron Lighting: LED System...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Philadelphia International Airport Apron Lighting: LED System Performance in a Trial Installation Philadelphia International Airport Apron Lighting: LED System Performance in a ...

  18. LED Lighting: Just the Facts, Please!

    Energy.gov [DOE]

    Now there's another arsenal in the toolbox to help consumers find LED lights they can trust: the Lighting Facts™ label.

  19. Considerations When Comparing LED and Conventional Lighting ...

    Energy.gov [DOE] (indexed site)

    When comparing LED lighting performance to conventional lighting, buyers will want to consider energy efficiency, operating life and lumen depreciation, light outputdistribution, ...

  20. LED Lighting Forecast | Department of Energy

    Energy Saver

    Research & Development » Technology Application R&D » LED Lighting Facts LED Lighting Facts LED lighting facts - A Program of the U.S. DOE DOE's LED Lighting Facts® program showcases LED products for general illumination from manufacturers who commit to testing products and reporting performance results according to industry standards. For lighting buyers, designers, and energy efficiency programs, the program provides information essential to evaluating SSL products. Central to the

  1. Smart Street Lights | GE Global Research

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Smart Manufacturing Innovation Smart Manufacturing Innovation Addthis Find out how advanced technologies developed by our latest institute will make U.S. manufacturing more productive, energy efficient, and competitive. Learn more about advanced manufacturing

    LightGrid Provides Real-Time Feedback From Street Lights Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new window) Click to share on LinkedIn (Opens in new window)

  2. LED Lighting Basics | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    LED Lighting Basics LED Lighting Basics August 16, 2013 - 10:07am Addthis Light-emitting diodes (LEDs) efficiently produce light in a fundamentally different way than any legacy or traditional light source. LEDs are compound semiconductor devices that produce light when an appropriate electrical current is applied. Applying electrical current causes electrons to flow from one material in the structure to another and this in turn causes a series of complex interactions at an atomic level that

  3. LED Watch: How Safe Is the Light from LEDs?

    Energy Saver

    It's important to note that there's about LED safety focus on what's known no difference between the type of vis- as "blue light," which is light in the violet ible radiant energy ...

  4. Using the Street and Parking Facility Lighting Retrofit Financial Analysis

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Tool | Department of Energy Information Resources » Webcasts » Using the Street and Parking Facility Lighting Retrofit Financial Analysis Tool Using the Street and Parking Facility Lighting Retrofit Financial Analysis Tool This August 22, 2013 webinar provided a guided walk-through of the Street and Parking Facility Lighting Retrofit Financial Analysis Tool. Developed by a partnership of the DOE Municipal Solid-State Street Lighting Consortium, the Clinton Climate Initiative/C40, and the

  5. EECBG Success Story: Recovery Act is "Lighting Up" the Streets of Philadelphia

    Energy.gov [DOE]

    The Philadelphia Streets Department is converting 58,000 yellow and green traffic signals and will replace approximately 27,000 red LED lights that have come to the end of their useful life. Learn more.

  6. LED Lighting in a Performing Arts Center

    SciTech Connect

    Wilkerson, A. M.; Abell, T. C.; T., E. Perrin

    2015-07-31

    GATEWAY demonstration report of LED wall washer retrofit lighting at the University of Maryland Clarice Smith Performing Arts Center.

  7. Today LED Holiday Lights, Tomorrow the World?

    SciTech Connect

    Gordon, Kelly L.

    2004-12-20

    This article for The APEM Advantage, the quarterly newsletter of the Association of Professional Energy Managers (APEM) describes the recent increase in the popularity of light emitting diode (LED) lighting and compares LED light output with that of incandescent and compact fluorescent lighting.

  8. Testimonials - Partnerships in LED Lighting - Philips Lumileds

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Lighting, LLC | Department of Energy LED Lighting - Philips Lumileds Lighting, LLC Testimonials - Partnerships in LED Lighting - Philips Lumileds Lighting, LLC Addthis Text Version The words "Office of Energy Efficiency & Renewable Energy, U.S. Department of Energy, EERE Partnership Testimonials," appear on the screen, followed by "Sunil Thomas, General Manager of San Jose Manufacturing Site, Philips Lumileds Lighting, LLC" and footage of a man sitting in a showcase

  9. Municipal Solid-State Street Lighting Consortium Kickoff Webcast |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Webcasts » Municipal Solid-State Street Lighting Consortium Kickoff Webcast Municipal Solid-State Street Lighting Consortium Kickoff Webcast This May 6, 2010 webcast served as the first official meeting of the new DOE Municipal Solid-State Street Lighting Consortium. Ed Smalley of Seattle City Light and Bruce Kinzey of Pacific Northwest National Laboratory discussed the Consortium's mission and goals, and provided an overview of its first steps, and opportunities to

  10. LED Outdoor Area Lighting Fact Sheet

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Outdoor Area Lighting LED technology is rapidly becoming competitive with high-intensity discharge light sources for outdoor area lighting. This document reviews the major design and specification concerns for outdoor area lighting, and discusses the potential for LED luminaires to save energy while providing high quality lighting for outdoor areas. Terms LCS - luminaire classification system for outdoor luminaires, published as an IESNA technical memorandum, TM-15-07. Addresses three zones of

  11. The Recovery Act is "Lighting Up" the streets of Philadelphia

    ScienceCinema

    Nutter, Michael; Gajewski, Katherine; Russell, Toby; Williams, Doug; Best, DeLain

    2016-07-12

    The Philadelphia Streets Department is converting 58,000 yellow and green traffic signals and will replace approximately 27,000 red LED lights that have come to the end of their useful life. The project will use approximately $3 million in EECBG funds, matched with $3 million in PECO funding, and will save the city approximately $1 million in electric costs each year. For more information on Recovery Act projects funded by the Department of Energy in Pennsylvania: http://www.energy.gov/recovery/pa.htm

  12. The Recovery Act is "Lighting Up" the streets of Philadelphia

    SciTech Connect

    Nutter, Michael; Gajewski, Katherine; Russell, Toby; Williams, Doug; Best, DeLain;

    2010-01-01

    The Philadelphia Streets Department is converting 58,000 yellow and green traffic signals and will replace approximately 27,000 red LED lights that have come to the end of their useful life. The project will use approximately $3 million in EECBG funds, matched with $3 million in PECO funding, and will save the city approximately $1 million in electric costs each year. For more information on Recovery Act projects funded by the Department of Energy in Pennsylvania: http://www.energy.gov/recovery/pa.htm

  13. LED Lighting Facts®

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... and NGL * Constantly changing based on feedback and input from stakeholders - Data ... the program value - 684 manufacturers, 360 retailersdistributors, 300 lighting ...

  14. Demonstration Assessment of LED Parking Structure Lighting

    SciTech Connect

    Kinzey, B. R.; Myer, M. A.

    2013-03-01

    GATEWAY program report on a demonstration of LED parking structure lighting at the U.S. Dept. of Labor headquarters in Washington, DC.

  15. Webcast: Municipal Solid-State Street Lighting Consortium Retrofit

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Financial Analysis Tool | Department of Energy Municipal Solid-State Street Lighting Consortium Retrofit Financial Analysis Tool Webcast: Municipal Solid-State Street Lighting Consortium Retrofit Financial Analysis Tool This April 3, 2012 webcast presented information about the Retrofit Financial Analysis Tool developed by DOE"s Municipal Solid-State Street Lighting Consortium. Doug Elliott of Pacific Northwest National Laboratory provided a guided walk-through of what the tool can do

  16. LED Outdoor Area Lighting Fact Sheet

    SciTech Connect

    2008-06-01

    This fact sheet reviews the major design and specification concerns for outdoor area lighting, and discusses the potential for LED luminaires to save energy while providing high quality lighting for outdoor areas.

  17. Text-Alternative Version LED Lighting Forecast

    Energy.gov [DOE]

    The DOE report Energy Savings Forecast of Solid-State Lighting in General Illumination Applications estimates the energy savings of LED white-light sources over the analysis period of 2013 to 2030....

  18. LED Roadway Lighting | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Roadway Lighting LED Roadway Lighting PDF icon I-35 Bridge Report, Phase II PDF icon I-35 Bridge Report, Phase II Brief PDF icon I-35 Bridge Report, Phase I More Documents & ...

  19. SEAD Street Lighting Evaluation Tool | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Name: SEAD Street Lighting Evaluation Tool AgencyCompany Organization: SEAD Sector: Energy Focus Area: Energy Efficiency Resource Type: Softwaremodeling tools User Interface:...

  20. LED Lighting in a Performing Arts Building

    SciTech Connect

    Miller, N. J.; Kaye, S. M.; Coleman, P. M.; Wilkerson, A. M.; Perrin, T. E.; Sullivan, G. P.

    2014-07-31

    At the University of Florida in Gainesville, the DOE Solid-State Lighting GATEWAY program evaluated LED architectural and theatrical lighting in four academic/performance-related spaces within the Nadine McGuire Theatre + Dance Pavilion. Due to a wise choice of products and luminaire light distributions, the change brought significant quality improvements including improved controllability and color.

  1. Demonstration Assessment of Light-Emitting Diode (LED) Roadway Lighting

    SciTech Connect

    Kinzey, B. R.; Myer, M. A.

    2009-11-01

    A U.S. Department of Energy Solid-State Lighting Gateway Report on a Demonstration Assessment of Light-Emitting Diode (LED) Roadway Lighting in Lija Loop, Portland, Oregon.

  2. Memorandum of Decision: Withdrawal of LED Lighting Waiver | Department...

    Office of Environmental Management (EM)

    LED Lighting Waiver Memorandum of Decision: Withdrawal of LED Lighting Waiver novemberdecisionwithdraw More Documents & Publications Nationwide Nonavailability Waiver: November...

  3. Testimonials - Partnerships in LED Lighting - Philips Lumileds...

    Office of Environmental Management (EM)

    Footage of different LED lighting systems, followed by a computer screen with data, followed by a man wearing a blue lab coat and face mask is entering data in a computer in a ...

  4. LED Holiday Lights: Festive, Safe, and Efficient!

    Energy.gov [DOE]

    Ed. Note cross posted from the Energy Savers Blog. LED light strings may cost a little more up front, but they'll save money in the long run and probably last longer too.

  5. Advanced Leds | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Place: Coventry, England, United Kingdom Zip: CV5 6SP Product: Advanced Leds develops LED technology for outdoor lighting, including street lighting applications. Coordinates:...

  6. LED Lighting Facts/CALiPER Snapshot. Outdoor Ambient Lighting

    SciTech Connect

    2013-07-01

    Snapshot reports reveal how today's products really perform, drawing on analysis of verified performance data from the LED Lighting Facts program's online product list.

  7. DOE Science Showcase - Light-emitting Diode (LED) Lighting Research...

    Office of Scientific and Technical Information (OSTI)

    William Watson's latest white paper In the OSTI collections: Light-emitting Diodes (LEDs). Related Links of Interest DOE Office of Energy Efficiently & Renewable Energy, Building ...

  8. Salazar, Chu to Flip Switch on Energy-Efficient LED Lights on National Mall

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    | Department of Energy Salazar, Chu to Flip Switch on Energy-Efficient LED Lights on National Mall Salazar, Chu to Flip Switch on Energy-Efficient LED Lights on National Mall January 30, 2012 - 11:02am Addthis WASHINGTON, D.C.-Today, Secretary of the Interior Ken Salazar and Secretary of Energy Steven Chu will participate in a lighting ceremony featuring the newly-installed LED lights on the National Mall. Illuminating the Mall from 3rd to 15th Streets, the LED technology is expected to

  9. DOE Publishes Report on Detroit’s Street Lighting Conversion

    Office of Energy Efficiency and Renewable Energy (EERE)

    The U.S. Department of Energy has released a new report on the comprehensive street lighting restoration currently being undertaken by the City of Detroit, which includes transitioning the existing...

  10. FirstEnergy (Potomac Edison)- Municipal and Street Lighting Program

    Energy.gov [DOE]

    FirstEnergy (Potomac Edision) offers several incentives for non-residential and municipal customers to upgrade traffic signals, pedestrian signals, street lights to more efficient  fixtures. The...

  11. LED

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Cost The high-brightness, rapidly pulsed, multicolor light-emitting diode (LED) driver delivers lighting performance that exceeds that of conventional (laserarc-light) sources ...

  12. Sustainable LED Fluorescent Light Replacement Technology

    SciTech Connect

    2011-06-30

    Ilumisys and the National Center for Manufacturing Sciences (NCMS) partnered on a three-year project awarded by the United States (U.S.) Department of Energy (DOE), to quantify the impacts of LED lamps, incandescent lamps and fluorescent benchmark lamps over a product lifecycle – i.e. to develop a sustainable design and manufacturing strategy that addresses product manufacturing, use, recycling and disposal scenarios for LED-based lighting. Based on the knowledge gained from extensive product tear-down studies of fluorescent and screw-in lighting products, lifecycle assessment tools, and accelerated lifecycle testing protocols, an interactive Sustainable LED Design Guide has been developed to aid architectural and lighting designers and engineers in making design decisions that consider three important environmental impacts (greenhouse gas emissions, energy use and mercury emission) across all phases of the life of an LED lighting product. Critical information developed for the lifecycle analysis and product feature comparisons is the useful life of the lighting product as well as its performance. The Design Guide is available at www.ncms.org, and was developed based on operational and durability testing of a variety of lighting products including power consumption, light output, and useful life of a lamp in order to allow a more realistic comparison of lamp designs. This report describes the main project tasks, results and innovative features of the lifecycle assessment (LCA)-based design tools, and the key considerations driving the sustainable design of LED lighting systems. The Design Guide incorporates the following three novel features for efficiently evaluating LED lighting features in value-chains: • Bill-of-Materials (BOM) Builder – Designers may import process data for each component and supply functional data for the product, including power, consumption, lumen output and expected useful life. • Environmental Impact Review – Designs are

  13. Frequently Asked Questions About the Municipal Solid-State Street Lighting Consortium

    Energy.gov [DOE]

    This page addresses many of the questions about the Municipal Solid-State Street Lighting Consortium.

  14. Solid State Lighting LED Core Technology R&D Roundtable

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    The document should be referenced as: DOE SSL Program, "Solid State Lighting LED Core Technology R&D Roundtable," November 2015. Authors Monica Hansen LED Lighting Advisors Nnamnor ...

  15. Exterior LED Lighting Projects at Princeton University | Department...

    Energy Saver

    Exterior LED Lighting Projects at Princeton University Exterior LED Lighting Projects at Princeton University 2015gatewayprinceton-exterior.pdf gatewayprinceton-exteriorbrief.p...

  16. Technical Feasibility Assessment of LED Roadway Lighting on the...

    Office of Scientific and Technical Information (OSTI)

    Technical Feasibility Assessment of LED Roadway Lighting on the Golden Gate Bridge Tuenge, Jason R. LED; induction; ceramic metal halide; plasma; roadway lighting; Golden Gate...

  17. (Expired) Nationwide Limited Public Interest Waiver for LED Lighting...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    (Expired) Nationwide Limited Public Interest Waiver for LED Lighting and HVAC Units: February 11, 2010 (Expired) Nationwide Limited Public Interest Waiver for LED Lighting and HVAC ...

  18. Adaptive Street Lighting Controls | Department of Energy

    Energy Saver

    Solid-State Lighting Home About the Solid-State Lighting Program Research & Development Understanding SSL Information Resources Conferences & Meetings Presentations Publications ...

  19. New and Underutilized Technology: High Bay LED Lighting

    Energy.gov [DOE]

    The following information outlines key deployment considerations for high bay LED lighting within the Federal sector.

  20. Using QECBs for Street Lighting Upgrades: Lighting the Way to Lower Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Bills in San Diego | Department of Energy QECBs for Street Lighting Upgrades: Lighting the Way to Lower Energy Bills in San Diego Using QECBs for Street Lighting Upgrades: Lighting the Way to Lower Energy Bills in San Diego Summarizes how the City of San Diego leveraged $13.1 million in qualified energy conservation bonds to increase the size of a street lighting upgrade project. Author: Lawrence Berkeley National Laboratory Lighting the Way to Lower Energy Bills in San Diego (322.66 KB)

  1. DOE ZERH Webinar: LED Lighting Efficiency | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    LED Lighting Efficiency DOE ZERH Webinar: LED Lighting Efficiency Description: LED lighting offers efficiency and performance benefits we've never seen in traditional lighting technologies. Commercial buildings have seen rapid growth in LED deployment, and in the residential arena leading builders are now integrating LED lighting packages. And as with any new building system, there are integration challenges along with the process of consumer understanding and acceptance. This webinar will

  2. Which LED Lighting Products Would You Consider Trying?

    Energy.gov [DOE]

    Which LED lighting products would you consider trying? Or, if you're already using LEDs, what do you think of them?

  3. LED Linear Lamps and Troffer Lighting | Department of Energy

    Energy Saver

    LED Lights for All Occasions LED Lights for All Occasions November 15, 2012 - 1:15pm Addthis With such a variety of lights available, LEDs are a perfect choice for holiday lighting. | Photo courtesy of ©iStockphoto.com/Birzio With such a variety of lights available, LEDs are a perfect choice for holiday lighting. | Photo courtesy of ©iStockphoto.com/Birzio Elizabeth Spencer Communicator, National Renewable Energy Laboratory What does this mean for me? Energy-efficient LED lights can be used

  4. DOE Publishes GATEWAY Report on LED Lighting in a Performing...

    Energy Saver

    LED Lighting in a Performing Arts Setting DOE Publishes GATEWAY Report on LED Lighting in a Performing Arts Setting August 6, 2014 - 2:46pm Addthis The U.S. Department of Energy ...

  5. Shedding new light on LEDs | Argonne National Laboratory

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    thing they aren't very good at: efficiently emitting light in the yellow-green spectrum. ... of LED lights in order to build highly efficient LEDs in the yellow-green spectrum. ...

  6. LED Site Lighting in the Commercial Building Sector: Opportunities...

    Energy Saver

    Site Lighting in the Commercial Building Sector: Opportunities, Challenges, and the CBEA Performance Specification LED Site Lighting in the Commercial Building Sector: ...

  7. Lighting for Health: LEDs in the New Age of Illumination

    SciTech Connect

    2014-05-01

    DOE Solid-State Lighting program technology fact sheet that provides background on current science and considerations related to LED light and health.

  8. LED Provides Effective and Efficient Parking Area Lighting at...

    Energy.gov [DOE] (indexed site)

    LED parking area lights at the NAVFAC Engineering Service Center at Port Hueneme provide high quality, evenly distributed light. Photo courtesy of PNNL because of its long rated ...

  9. LED Provides Effective and Efficient Parking Area Lighting at...

    Energy Saver

    LED Provides Effective and Efficient Parking Area Lighting at the NAVFAC Engineering Service Center Document details new lighting technology that reduces energy consumption and ...

  10. Text-Alternative Version: Keynote Video from Street and Area Lighting Conference

    Office of Energy Efficiency and Renewable Energy (EERE)

    Following is a text version of Jim Brodrick's keynote video from the recent Street and Area Lighting Conference.

  11. REA Refrigerated Display Case LED Lighting Performance Specification |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy REA Refrigerated Display Case LED Lighting Performance Specification REA Refrigerated Display Case LED Lighting Performance Specification A Retailer Energy Alliances (REA) Project rea_refrig_display_spec.pdf (300.24 KB) More Documents & Publications CBEA LED Site Lighting Specification - Version 1.3, Released 2/15/2012 Model Specification for LED Roadway Luminaires, V2.0 CBEA High-Efficiency Parking Structure Lighting Specification

  12. LED Parking Lot Lighting Working Group Fact Sheet

    SciTech Connect

    2008-10-01

    This fact sheet describes the Retailer Energy Alliance LED Parking Lot Lighting Working Group and its Technology Procurement Project.

  13. Demonstration Assessment of Light-Emitting Diode (LED) Street...

    Office of Scientific and Technical Information (OSTI)

    product is performing at an efficiency level comparable to its primary competition ... Language: English Subject: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; COLOR; ...

  14. New DOE Report Estimates LED Savings in Common Lighting Applications |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Report Estimates LED Savings in Common Lighting Applications New DOE Report Estimates LED Savings in Common Lighting Applications July 24, 2015 - 11:00am Addthis The U.S. Department of Energy (DOE) has released its latest report in a series analyzing markets where LEDs compete with traditional lighting sources. The new report, Adoption of Light-Emitting Diodes in Common Lighting Applications, reveals a wealth of insights into promising pathways for SSL technology

  15. #AskEnergySaver: LED Lights | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    LED Lights #AskEnergySaver: LED Lights April 24, 2014 - 6:00pm Addthis LED lights are six to seven times more energy efficient than conventional incandescent lights, cut energy use by more than 80 percent and can last more than 25 times longer. | Photo courtesy of Dennis Schroeder, NREL. LED lights are six to seven times more energy efficient than conventional incandescent lights, cut energy use by more than 80 percent and can last more than 25 times longer. | Photo courtesy of Dennis Schroeder,

  16. Solid State Lighting LED Manufacturing Roundtable Summary

    SciTech Connect

    none,

    2010-03-31

    Summary of a meeting of LED experts to develop proposed priority tasks for the Manufacturing R&D initiative, including task descriptions, discussion points, recommendations, and presentation highlights.

  17. Getting Ready for LEDs: LED Lighting Video Series Explains the Basics |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Getting Ready for LEDs: LED Lighting Video Series Explains the Basics Getting Ready for LEDs: LED Lighting Video Series Explains the Basics November 26, 2012 - 3:09pm Addthis Part 1 of the ElectricTV.net video series. Part 2 of the ElectricTV.net video series. Roland Risser Roland Risser Deputy Assistant Secretary for Renewable Power How can I participate? Learn more about the advantages and accessiblity of LED lighting from this series of videos. If you haven't been

  18. Integrated LED-based luminare for general lighting

    DOEpatents

    Dowling, Kevin J.; Lys, Ihor A.; Roberge, Brian; Williamson, Ryan C.; Roberts, Ron; Datta, Michael; Mollnow, Tomas; Morgan, Frederick M.

    2013-03-05

    Lighting apparatus and methods employing LED light sources are described. The LED light sources are integrated with other components in the form of a luminaire or other general purpose lighting structure. Some of the lighting structures are formed as Parabolic Aluminum Reflector (PAR) luminaires, allowing them to be inserted into conventional sockets. The lighting structures display beneficial operating characteristics, such as efficient operation, high thermal dissipation, high output, and good color mixing.

  19. Integrated LED-based luminaire for general lighting

    DOEpatents

    Dowling, Kevin J.; Lys, Ihor A.; Williamson, Ryan C.; Roberge, Brian; Roberts, Ron; Morgan, Frederick; Datta, Michael Jay; Mollnow, Tomas Jonathan

    2016-08-30

    Lighting apparatus and methods employing LED light sources are described. The LED light sources are integrated with other components in the form of a luminaire or other general purpose lighting structure. Some of the lighting structures are formed as Parabolic Aluminum Reflector (PAR) luminaires, allowing them to be inserted into conventional sockets. The lighting structures display beneficial operating characteristics, such as efficient operation, high thermal dissipation, high output, and good color mixing.

  20. Text-Alternative Version: Municipal Solid-State Street Lighting...

    Energy Saver

    the U.S. Department of Energy Solid-State Lighting Program. ... for that cities' LED Streetlight Conversion Program. ... And then there are also three charts provided at the bottom ...

  1. Have You Used LED Light Strings? | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Used LED Light Strings? Have You Used LED Light Strings? December 3, 2009 - 7:30am Addthis This week, you read about LED holiday light strings, which can use 90% less energy than regular incandescent light strings. You may even be able to save on the initial costs with rebates from stores or your utility; check to find out what's being offered in your area. Have you used LED light strings? Tell us what you think of them. Each Thursday, you have the chance to share your thoughts on a question

  2. Appraisers Project Plan: Wireless Controls and Retrofit LED Lighting Demonstration

    Energy.gov [DOE]

    Appraisers Project Plan: Wireless Controls and Retrofit LED Lighting Demonstration Measurement and Verification Report This report details the measurement and verification tools and methods used to evaluate the effectiveness of wireless lighting controls and LED lighting at the Appraisers Building, a federal office building in San Francisco, CA.

  3. REA Refrigerated Display Case LED Lighting Performance Specification...

    Energy.gov [DOE] (indexed site)

    A Retailer Energy Alliances (REA) Project PDF icon rearefrigdisplayspec.pdf More Documents & Publications CBEA LED Site Lighting Specification - Version 1.3, Released 2152012 ...

  4. Application Assessment of Bi-Level LED Parking Lot Lighting

    SciTech Connect

    Johnson, Megan; Cook, Tyson; Shackelford, Jordan; Pang, Terrance

    2009-02-01

    This report summarizes an assessment project conducted to evaluate light-emitting diode (LED) luminaires with bi-level operation in an outdoor parking lot application.

  5. LED Lights for All Occasions | Department of Energy

    Energy.gov [DOE] (indexed site)

    What does this mean for me? Energy-efficient LED lights can be used to save money while decorating this holiday season. The topic of lighting is no stranger to the Energy Saver ...

  6. DOE Publishes Fact Sheet on LED Lighting and Health

    Energy.gov [DOE]

    The U.S. Department of Energy has published a fact sheet that looks at what's known—and not known—about the effects of lighting on human health, with specific reference to LEDs. Entitled Lighting...

  7. Text-Alternative Version: Municipal Solid-State Street Lighting Consortium

    Energy Saver

    Kickoff | Department of Energy Kickoff Text-Alternative Version: Municipal Solid-State Street Lighting Consortium Kickoff Below is the text-alternative version of the Municipal Solid-State Street Lighting Consortium Kickoff webcast, held May 6, 2010. Terry Shoemaker: Welcome, ladies and gentlemen. I'm Terry Shoemaker with the Pacific Northwest National Laboratory, and I'd like to welcome you to today's webcast, Municipal Solid-State Street Lighting Consortium Kickoff Meeting. This is brought

  8. Text-Alternative Version: Using the Street and Parking Facility Lighting

    Energy Saver

    Retrofit Financial Analysis Tool | Department of Energy Using the Street and Parking Facility Lighting Retrofit Financial Analysis Tool Text-Alternative Version: Using the Street and Parking Facility Lighting Retrofit Financial Analysis Tool Below is the text-alternative version of the "Using the Street and Parking Facility Lighting Retrofit Financial Analysis Tool" webcast, held August 22, 2013. Jeff McCullough: Welcome ladies and gentlemen. My name is Jeff McCullough with the

  9. Philadelphia International Airport Apron Lighting: LED System Performance

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    in a Trial Installation | Department of Energy Philadelphia International Airport Apron Lighting: LED System Performance in a Trial Installation Philadelphia International Airport Apron Lighting: LED System Performance in a Trial Installation 2015_gateway_philadelphia-airport.pdf (1.43 MB) gateway_philadelphia-airport_brief.pdf (481.03 KB) More Documents & Publications LED Performance Under Tough Conditions December 2015 Postings 2015 ARTICLES

  10. Demonstration Assessment of LED Roadway Lighting: Philadelphia, PA

    Office of Scientific and Technical Information (OSTI)

    (Technical Report) | SciTech Connect Demonstration Assessment of LED Roadway Lighting: Philadelphia, PA Citation Details In-Document Search Title: Demonstration Assessment of LED Roadway Lighting: Philadelphia, PA For this demonstration assessment, 10 different groups of LED luminaires were installed at three sites in Philadelphia, PA. Each of the three sites represented a different set of conditions, most importantly with regard to the incumbent HPS luminaires, which were nominally 100 W,

  11. Ultra-Thin Flexible LED Lighting Panels | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Ultra-Thin Flexible LED Lighting Panels Ultra-Thin Flexible LED Lighting Panels Lead Performer: Lucent Optics Inc. - Sacramento, CA DOE Total Funding: $149,979 Project Term: June 13, 2016 - March 13, 2017 Funding Type: SBIR PROJECT OBJECTIVE This project will develop and demonstrate a revolutionary new type of thin and flexible SSL panel that combines the high luminous efficacy and low cost of LEDs with the ultra-thin form factor and flexibility of OLEDs. The proposed approach extends the

  12. Text-Alternative Version: Municipal Solid-State Street Lighting Consortium Retrofit Financial Analysis Tool Webcast

    Office of Energy Efficiency and Renewable Energy (EERE)

    Below is the text-alternative version of the "Municipal Solid-State Street Lighting Consortium Retrofit Financial Analysis Tool" webcast, held April 3, 2012.

  13. Article Published on LED Lumen Maintenance and Light Loss Factors

    Energy.gov [DOE]

    An article has been published in LEUKOS: The Journal of the Illuminating Engineering Society of North America (IES) that may be of interest to the solid-state lighting community. Entitled "Lumen Maintenance and Light Loss Factors: Consequences of Current Design Practices for LEDs," the article was written by Michael Royer of Pacific Northwest National Laboratory and discusses complications related to the lamp lumen depreciation (LLD) light loss factor and LEDs.

  14. LED Lighting: Applying Lessons Learned from the CFL Experience

    SciTech Connect

    McCullough, Jeffrey J.; Gilbride, Theresa L.; Gordon, Kelly L.; Ledbetter, Marc R.; Sandahl, Linda J.; Ton, My K.

    2008-08-20

    Light emitting diode (LED) technology has emerged as an exciting new lighting alternative with the potential for significant energy savings. There is concern, however, that white light LEDs for general illumination could take a long, bumpy course similar to another energy-efficient lighting technology – compact fluorescent lights (CFLs). Recognizing the significant potential energy-efficient lighting has to reduce U.S. energy consumption, Congress mandated in the Energy Policy Act of 2005 that the U.S. Department of Energy (DOE) develop Solid State Lighting (SSL) through a Next Generation Lighting Initiative. DOE’s first step was to analyze the market introduction of compact fluorescent lighting to determine what lessons could be learned to smooth the introduction of SSL in the United States (Sandahl et al. 2006). This paper summarizes applicable lessons learned from the market introduction of CFLs and describe how DOE and others are applying those lessons to speed the development and market introduction of energy-efficient LED lighting for general illumination applications. A description of the current state of LED technology and compares LEDs to incandescent, fluorescent, and halogen lights is also provided.

  15. The Municipal Solid-State Street Lighting Consortium Public Outdoor Lighting Inventory: Phase I: Survey Results

    SciTech Connect

    Kinzey, Bruce R.; Smalley, Edward; Haefer, R.

    2014-09-30

    This document presents the results of a voluntary web-based inventory survey of public street and area lighting across the U.S. undertaken during the latter half of 2013.This survey attempts to access information about the national inventory in a “bottoms-up” manner, going directly to owners and operators. Adding to previous “top down” estimates, it is intended to improve understanding of the role of public outdoor lighting in national energy use.

  16. LED Lighting on the National Mall | Department of Energy

    Energy.gov [DOE] (indexed site)

    "Using energy-efficient LED light bulbs is an important way Americans can save money by saving energy," said Secretary Chu. "Investing in an American economy that is built to ...

  17. Slideshow: Flipping the Switch on LED Lighting for the National...

    Energy.gov [DOE] (indexed site)

    "Using energy-efficient LED light bulbs is an important way Americans can save money by saving energy," said Secretary Chu. "Investing in an American economy that is built to ...

  18. LED Watch: A Specifier's Guide to Color-Tunable Lighting

    Energy Saver

    ... Some systems LED WATCH A SPECIFIER'S GUIDE TO COLOR-TUNABLE LIGHTING Be sure to check all the boxes when investigating the array of new products L ED luminaires with the ability to ...

  19. EECBG Success Story: Solar LED Light Pilot Project Illuminates...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    solar-powered LED lights that replaced natural gas-powered streetlights in the city of Deming, New Mexico. | DOE photo EECBG Success Story: Energy Efficiency in New Mexico Frees ...

  20. DOE Science Showcase - Light-emitting Diode (LED) Lighting Research...

    Office of Scientific and Technical Information (OSTI)

    LED Research Information in DOE Databases SciTech Connect National Library of EnergyBeta Science.gov Ciencia.Science.gov WorldWideScience.org Visit the Science Showcase homepage. ...

  1. Optimized Phosphors for Warm White LED Light Engines

    SciTech Connect

    Setlur, Anant; Brewster, Megan; Garcia, Florencio; Hill, M. Christine; Lyons, Robert; Murphy, James; Stecher, Tom; Stoklosa, Stan; Weaver, Stan; Happek, Uwe; Aesram, Danny; Deshpande, Anirudha

    2012-07-30

    The objective of this program is to develop phosphor systems and LED light engines that have steady-state LED efficacies (using LEDs with a 60% wall-plug efficiency) of 105–120 lm/W with correlated color temperatures (CCT) ~3000 K, color rendering indices (CRI) >85, <0.003 distance from the blackbody curve (dbb), and <2% loss in phosphor efficiency under high temperature, high humidity conditions. In order to reach these goals, this involves the composition and processing optimization of phosphors previously developed by GE in combination with light engine package modification.

  2. LED Holiday Lights: Festive, Safe, and Efficient! | Department of Energy

    Energy Saver

    LED Holiday Lights: Festive, Safe, and Efficient! LED Holiday Lights: Festive, Safe, and Efficient! November 23, 2010 - 6:30am Addthis Allison Casey Senior Communicator, NREL This week brings a day that many people look forward to all year-and I'm not talking about Thanksgiving, or Black Friday. I'm talking about that magical day when it's finally okay to drag the dusty boxes from the basement or attic, to lovingly sort and display your decorations, to untangle your light strings and set up the

  3. An Integrated Solid-State LED Luminaire for General Lighting

    SciTech Connect

    Kevin Dowling; Fritz Morgan Ihor Lys; Mike Datta; Bernd Keller; Thomas Yuan

    2009-03-31

    A strong systems approach to designing and building practical LED-based replacement lamps is lacking. The general method of taking high-performance LEDs and marrying them to standard printed circuit boards, drivers and a heat sink has fallen short of the promise of LED lighting. In this program, a top-down assessment of requirements and a bottom-up reinvention of LED sources, electronics, optics and mechanics have resulted in the highest performance lamp possible. The team, comprised of Color Kinetics, the leaders in LED lighting and Cree, the leaders in LED devices took an approach to reinvent the package, the driver and the overall form and aesthetic of a replacement source. The challenge was to create a new benchmark in LED lighting - the resultant lamp, a PAR38 equivalent, met the light output, color, color quality and efficacy marks set out in the program as well as being dimmable, which is important for market acceptance. The approach combined the use of multiple source die, a chip-on-board approach, a very efficient driver topology, the use of both direct emission and phosphor conversion, and a unique faceted optic to avoid the losses, artifacts and hotspots of lensed approaches. The integral heat sink provided a mechanical base and airflow using a chimney-effect for use in a wide variety of locations and orientations. These research results led to a much better understanding of the system effects of component level technologies. It was clear that best-of-breed sub-system results do not necessarily result in the best end result for the complete system. In doing this work, we did not neglect the practical aspects of these systems. These were not rarified results and commercially impractical but lent themselves to eventual commercial products in the marketplace. The end result - a high performance replacement lamp - will save significant energy while providing a high-quality light source.

  4. National Consortium Supports Cities in Evaluating LED Streetlights

    SciTech Connect

    2013-09-30

    Fact sheet that introduces Municipal Solid-State Street Lighting Consortium, a group of municipalities, utilities, and energy efficiency organizations who are interested in making investments in LED street and area lighting.

  5. Memorandum of Decision: Withdrawal of LED Traffic Light Nonavailability Waiver

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ASSISTANT SECRETARY OF ENERGY FOR ENERGY EFFICIENCY AND RENEWABLE ENERGY MEMORANDUM OF DECISION SUBJECT: Amended waiver of section 1605 of the American Reinvestment and Recovery Act of 2009 (Recovery Act Buy American provisions) in EERE-funded projects for (1) LED traffic lights, arrows and crosswalk signals, as well as the adjacent wires and electronic parts necessary for the functionality of the lights themselves. This amendment withdraws the nonavailability waiver issued on February 11, 2010

  6. Ningbo Liaoyuan Lighting Co | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Engaged in outdoor LED lighting manufacture and design including street lamps and solarwind hybrid street lamps. Coordinates: 30.047501, 121.151222 Show Map Loading map......

  7. Demonstration Assessment of Light-Emitting Diode (LED) Area Lights for a Commercial Garage

    SciTech Connect

    2008-11-01

    This U.S. Department of Energy GATEWAY Demonstration project studied the applicability of light-emitting diode (LED) luminaires for commercial parking garage applications.

  8. LED Lighting Facts® Program Supports Accuracy in SSL Product Information

    SciTech Connect

    2013-09-30

    Fact sheet that provides a summary of LED Lighting Facts, a program to assure that LED lighting is accurately represented in the marketplace, illustrated by the LED Lighting Facts label to disclose product performance data.

  9. Demonstration Assessment of Light-Emitting Diode (LED) Post-Top Lighting at

    Office of Scientific and Technical Information (OSTI)

    Central Park in New York City (Technical Report) | SciTech Connect Demonstration Assessment of Light-Emitting Diode (LED) Post-Top Lighting at Central Park in New York City Citation Details In-Document Search Title: Demonstration Assessment of Light-Emitting Diode (LED) Post-Top Lighting at Central Park in New York City A review of five post-top light-emitting diode (LED) pedestrian luminaires installed in New York City's Central Park for possible replacement to the existing metal halide

  10. Using the Street and Parking Facility Lighting Retrofit Financial...

    Energy Saver

    View the presentation slides View the text-alternative version Solid-State Lighting Home About the Solid-State Lighting Program Research & Development Understanding SSL Information ...

  11. DOE Publishes GATEWAY Report on Portland's LED Streetlight Conversion...

    Energy.gov [DOE] (indexed site)

    matters, and the Portland Bureau of Transportation was an early investigator of LED street lighting and one of the first public agencies to join DOE's Municipal Solid-State Street ...

  12. LED Solutions for the Dark Hours

    Energy Saver

    technologies 5 LEDs for Street and Roadway Lighting Portland, OR Philadelphia, PA New York, NY Kansas City, MO 6 Boston Las Vegas Seattle Number of LED Replacements to Date (4...

  13. Working with Cities to Light Our Streets Better | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Cities to Light Our Streets Better Working with Cities to Light Our Streets Better January 26, 2015 - 9:18pm Addthis Franklin (Lynn) Orr Franklin (Lynn) Orr Under Secretary for Science and Energy Last week, mayors from around the nation visited Washington, D.C., for the U.S. Conference of Mayors' annual winter meeting. During a White House briefing, I had the chance to meet with 30 mayors who are committed to tackling today's energy and climate challenges. Cities are on the frontlines of

  14. Working with Cities to Light Our Streets Better | Department...

    Energy Saver

    to accelerate the adoption and use of high-efficiency outdoor lighting, driving carbon pollution reductions in communities across the nation. The Accelerator will work with...

  15. LED Site Lighting in the Commercial Building Sector: Opportunities, Challenges, and the CBEA Performance Specification

    Energy.gov [DOE]

    This March 26, 2009 webcast presented information about the Commercial Building Energy Alliances' (CBEA) efforts to explore the viability of LED site lighting in commercial parking lots. LED...

  16. Light source comprising a common substrate, a first led device and a second led device

    DOEpatents

    Choong, Vi-En

    2010-02-23

    At least one stacked organic or polymeric light emitting diode (PLEDs) devices to comprise a light source is disclosed. At least one of the PLEDs includes a patterned cathode which has regions which transmit light. The patterned cathodes enable light emission from the PLEDs to combine together. The light source may be top or bottom emitting or both.

  17. LED Linear Lamps and Troffer Lighting: CALiPER Report Series...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Videos LED Linear Lamps and Troffer Lighting: CALiPER Report Series 21 LED Linear Lamps and Troffer Lighting: CALiPER Report Series 21 View the video about CALiPER Report Series ...

  18. DOE Publishes CALiPER Snapshot Report on LED Outdoor Area Lighting

    Office of Energy Efficiency and Renewable Energy (EERE)

    The U.S. Department of Energy’s CALiPER program has released a Snapshot Report on LED outdoor area lighting. Based on LED Lighting Facts® data through the second quarter of 2014, the report focuses...

  19. Technical Feasibility Assessment of LED Roadway Lighting on the Golden Gate Bridge

    SciTech Connect

    Tuenge, J. R.

    2012-09-01

    GATEWAY program report on the technical feasibility of LED roadway lighting on the Golden Gate Bridge in San Francisco, CA.

  20. WEBINAR: LED LIGHTING IN A PERFORMING ARTS BUILDING | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    LED LIGHTING IN A PERFORMING ARTS BUILDING WEBINAR: LED LIGHTING IN A PERFORMING ARTS BUILDING Can LEDs render skin tones and makeup accurately in a dressing room? Can they provide the vertical footcandles in a studio to make dancers' bodies visible, or deliver acting studio lighting to bring out facial expressions and body movements? Can LEDs deliver adequate flicker-free light in the Scene Shop, where students are using saws and other construction tools? And, can they compete with halogen on

  1. Demonstration Assessment of Light-Emitting Diode (LED) Roadway Lighting, I-35W Bridge, Minneapolis, Minnesota, Phase II Report

    SciTech Connect

    Kinzey, B. R.; Davis, R. G.

    2014-09-30

    On the I-35W Bridge in Minneapolis, Minnesota, the GATEWAY program conducted a two-phase demonstration of LED roadway lighting on the main span, which is one of the country's oldest continuously operated exterior LED lighting installations. The Phase II report documents longer-term performance of the LED lighting system that was installed in 2008, and is the first report on the longer-term performance of LED lighting in the field.

  2. Demonstration Assessment of Light-Emitting Diode (LED) Roadway...

    Office of Scientific and Technical Information (OSTI)

    The LEDs had an average illuminance level of 0.91 foot candles compared to 1.29 fc for the HPS lamps. The LED luminairesmore cost 38,000 more than HPS lamps, yielding a lengthy ...

  3. LED Traffic Lights Get Buy American Stamp | Department of Energy

    Energy.gov [DOE] (indexed site)

    Red. Yellow. Green. What LED traffic signals don't say: Made in USA. That is changing. ... Lindsey Gsell is a Staff Writer for Energy Empowers. Addthis Related Articles LED traffic ...

  4. Demonstration of Light-Emitting Diode (LED) Retrofit Lamps

    SciTech Connect

    Miller, N.

    2011-09-01

    GATEWAY program report on a demonstration of LED retrofit lamps at the Jordan Schnitzer Museum of art in Eugene, OR

  5. DOE Publishes Report on Color Stability of LED Lighting Products

    Energy.gov [DOE]

    DOE has published a new GATEWAY report on color maintenance of LEDs in laboratory and field applications, summarizing color shift data of LED lamps used in real-world applications as well as LED products monitored by the CALiPER program in a lab

  6. Model Specification for LED Roadway Luminaires | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Resources » Model Specification for LED Roadway Luminaires Model Specification for LED Roadway Luminaires The DOE Municipal Solid-State Street Lighting Consortium's Model Specification for LED Roadway Luminaires enables cities, utilities, and other state and local agencies to assemble effective bid documents for LED street lighting products. The original version of the Model Specification for LED Roadway Luminaires (Version 1.0) was introduced in a November 2011 webcast. Version 2.0 of the

  7. EERE Success Story-LED Lighting in the Classroom for Energy Efficiency

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    and Enhanced Learning | Department of Energy LED Lighting in the Classroom for Energy Efficiency and Enhanced Learning EERE Success Story-LED Lighting in the Classroom for Energy Efficiency and Enhanced Learning July 21, 2016 - 12:00pm Addthis EERE Success Story—LED Lighting in the Classroom for Energy Efficiency and Enhanced Learning EERE Success Story—LED Lighting in the Classroom for Energy Efficiency and Enhanced Learning EERE Success Story-LED Lighting in the Classroom for

  8. Demonstration Assessment of Light-Emitting Diode (LED) Parking Lot Lighting in Leavenworth, KS

    SciTech Connect

    Myer, Michael; Kinzey, Bruce R.; Curry, Ku'uipo

    2011-05-06

    This report describes the process and results of a demonstration of solid-state lighting (SSL) technology in a commercial parking lot lighting application, under the U.S. Department of Energy (DOE) Solid-State Lighting Technology GATEWAY Demonstration Program. The parking lot is for customers and employees of a Walmart Supercenter in Leavenworth, Kansas and this installation represents the first use of the LED Parking Lot Performance Specification developed by the DOE’s Commercial Building Energy Alliance. The application is a parking lot covering more than a half million square feet, lighted primarily by light-emitting diodes (LEDs). Metal halide wall packs were installed along the building facade. This site is new construction, so the installed baseline(s) were hypothetical designs. It was acknowledged early on that deviating from Walmart’s typical design would reduce the illuminance on the site. Walmart primarily uses 1000W pulse-start metal halide (PMH) lamps. In order to provide a comparison between both typical design and a design using conventional luminaires providing a lower illuminance, a 400W PMH design was also considered. As mentioned already, the illuminance would be reduced by shifting from the PMH system to the LED system. The Illuminating Engineering Society of North America (IES) provides recommended minimum illuminance values for parking lots. All designs exceeded the recommended illuminance values in IES RP-20, some by a wider margin than others. Energy savings from installing the LED system compared to the different PMH systems varied. Compared to the 1000W PMH system, the LED system would save 63 percent of the energy. However, this corresponds to a 68 percent reduction in illuminance as well. In comparison to the 400W PMH system, the LED system would save 44 percent of the energy and provide similar minimum illuminance values at the time of relamping. The LED system cost more than either of the PMH systems when comparing initial costs

  9. Life-Cycle Assessment of Energy and Environmental Impacts of LED Lighting

    Office of Scientific and Technical Information (OSTI)

    Products, Part 3: LED Environmental Testing (Technical Report) | SciTech Connect Life-Cycle Assessment of Energy and Environmental Impacts of LED Lighting Products, Part 3: LED Environmental Testing Citation Details In-Document Search Title: Life-Cycle Assessment of Energy and Environmental Impacts of LED Lighting Products, Part 3: LED Environmental Testing This report covers the third part of a larger U.S. Department of Energy (DOE) project to assess the life-cycle environmental and

  10. Solid State Lighting LED Product Development and Manufacturing...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... introduced into the SSL system, protecting LED luminaires ... pump wavelengths and operating conditions, and the ... with the advance of human-robot interactions, natural ...

  11. Demonstration Assessment of Light-Emitting Diode (LED) Accent Lighting at the Field Museum in Chicago, IL

    SciTech Connect

    Myer, Michael; Kinzey, Bruce R.

    2010-12-10

    This report reviews a demonstration of light-emitting diode (LED) accent lighting compared to halogen (typical) accent lighting in a gallery of the Field Museum in Chicago, IL.

  12. Solar LED Light Pilot Project Illuminates the Way in Alabama

    Energy.gov [DOE]

    The community of Boaz, Alabama, saves money by retrofitting streetlights with new lighting technology.

  13. Solid State Lighting LED Product Development and Manufacturing...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... The FY17 milestone remains a good target for luminaires. The typical price of a 3,500 lumen 2'x4' LED troffer at 100 lmW is currently about 90-95 per unit, however work is ...

  14. LED Traffic Lights Get Buy American Stamp | Department of Energy

    Energy.gov [DOE] (indexed site)

    To date, Dialight has manufactured nearly 4 million LED signals-which include red, green and yellow traffic balls, traffic arrows and pedestrian crosswalk signals. Many major U.S. ...

  15. LED intense headband light source for fingerprint analysis

    DOEpatents

    Villa-Aleman, Eliel

    2005-03-08

    A portable, lightweight and high-intensity light source for detecting and analyzing fingerprints during field investigation. On-site field analysis requires long hours of mobile analysis. In one embodiment, the present invention comprises a plurality of light emitting diodes; a power source; and a personal attachment means; wherein the light emitting diodes are powered by the power source, and wherein the power source and the light emitting diodes are attached to the personal attachment means to produce a personal light source for on-site analysis of latent fingerprints. The present invention is available for other applications as well.

  16. Demonstration Assessment of Light-Emitting Diode (LED) Roadway Lighting, I-35W Bridge, Minneapolis, Minnesota, Phase I Report

    SciTech Connect

    Kinzey, B. R.; Myer, M. A.

    2009-08-01

    On the I-35W Bridge in Minneapolis, Minnesota, the GATEWAY program conducted a two-phase demonstration of LED roadway lighting on the main span, which is one of the country's oldest continuously operated exterior LED lighting installations. The Phase I report provides an overview of initial project results including lighting performance, economic performance, and potential energy savings.

  17. DOE Publishes New Forecast of Energy Savings from LED Lighting...

    Office of Environmental Management (EM)

    Addthis Related Articles DOE Releases Latest Report on Energy Savings Forecast of Solid-State Lighting DOE Publishes Pricing and Efficacy Trend Analysis for Utility Program ...

  18. New DOE Report Estimates LED Savings in Common Lighting Applications...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    NAS Report and Microsite Trace SSL Evolution and Future Promise Energy Department Offers 10 Million for Energy-Saving Lighting Technologies DOE Publishes Pricing and Efficacy ...

  19. Demonstration Assessment of Light-Emitting Diode (LED) Parking...

    Office of Scientific and Technical Information (OSTI)

    Criteria include payback, light levels, occupant satisfaction. This report is Phase I of II. Phase I deals with initial installation. Authors: Myer, Michael ; Goettel, Russell T. ...

  20. EECBG Success Story: Solar LED Light Pilot Project Illuminates the Way in

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Alabama | Department of Energy Solar LED Light Pilot Project Illuminates the Way in Alabama EECBG Success Story: Solar LED Light Pilot Project Illuminates the Way in Alabama September 12, 2012 - 2:15pm Addthis Boaz, Alabama Mayor Tim Walker, along with state representatives and community leaders, cut the ribbon for the state's solar LED light pilot project. | Photo courtesy of Lionel Green, Sand Mountain Reporter. Boaz, Alabama Mayor Tim Walker, along with state representatives and community

  1. LED Linear Lamps and Troffer Lighting: CALiPER Report Series 21

    ScienceCinema

    Beeson, Tracy; Miller, Naomi

    2014-06-23

    Video about CALiPER Report Series 21 on LED Linear Lamps and Troffer Lighting, featuring interviews with Tracy Beeson and Naomi Miller of Pacific Northwest National Laboratory.

  2. LED Linear Lamps and Troffer Lighting: CALiPER Report Series 21

    SciTech Connect

    Beeson, Tracy; Miller, Naomi

    2014-06-17

    Video about CALiPER Report Series 21 on LED Linear Lamps and Troffer Lighting, featuring interviews with Tracy Beeson and Naomi Miller of Pacific Northwest National Laboratory.

  3. Demonstration Assessment of Light-Emitting Diode (LED) Post-Top...

    Office of Scientific and Technical Information (OSTI)

    This report reviews the energy savings potential and lighting delivered by the LED post-top luminaires. Authors: Myer, Michael ; Goettel, Russell T. ; Kinzey, Bruce R. Publication ...

  4. Demonstration Assessment of LED Roadway Lighting: NE Cully Blvd., Portland, OR

    SciTech Connect

    Royer, M. P.; Poplawski, M. E.; Tuenge, J. R.

    2012-08-01

    GATEWAY program report on a demonstration of LED roadway lighting on NE Cully Boulevard in Portland, OR, a residential collector road.

  5. EERE Success Story-LED Lighting in the Classroom for Energy Efficiency...

    Energy Saver

    easily controllable, because it's based on semiconductors rather than on filaments, plasma, or gas. "In addition to demonstrating the excellent efficiency of LED lighting ...

  6. LED Record Efficacy and Brightness

    Energy.gov [DOE]

    Designed for general lighting applications such as street, industrial, and parking garage lighting, the Cree XLamp® power LED sets new records for LED brightness and efficacy, up to 85 lm/W at 350 mA. The XLamp utilizes Cree's performance breakthrough EZBright™ LED chip; both products include technology that was developed in part with R&D funding support from DOE.

  7. Life-Cycle Assessment of Energy and Environmental Impacts of LED Lighting Products, Part 3: LED Environmental Testing

    SciTech Connect

    Tuenge, Jason R.; Hollomon, Brad; Dillon, Heather E.; Snowden-Swan, Lesley J.

    2013-03-01

    This report covers the third part of a larger U.S. Department of Energy (DOE) project to assess the life-cycle environmental and resource impacts in the manufacturing, transport, use, and disposal of light-emitting diode (LED) lighting products in relation to incumbent lighting technologies. All three reports are available on the DOE website (www.ssl.energy.gov/tech_reports.html). • Part 1: Review of the Life-Cycle Energy Consumption of Incandescent, Compact Fluorescent and LED Lamps; • Part 2: LED Manufacturing and Performance; • Part 3: LED Environmental Testing. Parts 1 and 2 were published in February and June 2012, respectively. The Part 1 report included a summary of the life-cycle assessment (LCA) process and methodology, provided a literature review of more than 25 existing LCA studies of various lamp types, and performed a meta-analysis comparing LED lamps with incandescent and compact fluorescent lamps (CFLs). Drawing from the Part 1 findings, Part 2 performed a more detailed assessment of the LED manufacturing process and used these findings to provide a comparative LCA taking into consideration a wider range of environmental impacts. Both reports concluded that the life-cycle environmental impact of a given lamp is dominated by the energy used during lamp operation—the upstream generation of electricity drives the total environmental footprint of the product. However, a more detailed understanding of end-of-life disposal considerations for LED products has become increasingly important as their installation base has grown. The Part 3 study (reported herein) was undertaken to augment the LCA findings with chemical analysis of a variety of LED, CFL, and incandescent lamps using standard testing procedures. A total of 22 samples, representing 11 different models, were tested to determine whether any of 17 elements were present at levels exceeding California or Federal regulatory thresholds for hazardous waste. Key findings include: • The selected

  8. LED Lights for All Occasions | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    to fish that thing out of a pumpkin after a rainy day. I do not want to think about fishing lights out of a moldy pumpkin. If I get one next year, I guess I'll have to unlearn...

  9. Demonstration Assessment of Light-Emitting Diode (LED) Freezer...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    The program supports demonstrations of high-performance solid-state lighting (SSL) products in order to develop empirical data and experience with in-the-field applications of this ...

  10. Article Published on LED Lumen Maintenance and Light Loss Factors

    Energy.gov [DOE]

    An article has been published in LEUKOS: The Journal of the Illuminating Engineering Society of North America (IES) that may be of interest to the solid-state lighting community. Entitled "Lumen...

  11. Demonstration Assessment of Light-Emitting Diode (LED) Post-Top...

    Office of Scientific and Technical Information (OSTI)

    at Central Park in New York City Citation Details In-Document Search Title: Demonstration Assessment of Light-Emitting Diode (LED) Post-Top Lighting at Central Park in New York ...

  12. CREE Develops Materials and Designs for High-Efficacy LED Light Engines

    Energy.gov [DOE]

    The most common method of white-light generation in LEDs is by green, yellow, and red phosphor downconversion. But the fact that red wavelengths fall at one end of the visible light spectrum poses...

  13. Demonstration Assessment of LED Roadway Lighting: Philadelphia, PA

    SciTech Connect

    Royer, Michael P.; Tuenge, Jason R.; Poplawski, Michael E.

    2012-09-01

    For this demonstration assessment, 10 different groups of LED luminaires were installed at three sites in Philadelphia, PA. Each of the three sites represented a different set of conditions, most importantly with regard to the incumbent HPS luminaires, which were nominally 100 W, 150 W, and 250 W. The performance of each product was evaluated based on manufacturer data, illuminance calculations, field measurements of illuminance, and the subjective impressions of both regular and expert observers.

  14. Energy-Department Supported Scientist Receives Nobel Prize for Blue Light LED

    Energy.gov [DOE]

    This week, three scientists—two from Japan and one from the United States—received the Nobel Prize in physics for their work on the LED light. The trifecta, Isamu Akasaki, Hiroshi Amano and Shuji Nakamura, earned the prestigious award specifically for their invention of the blue light emitting diode, a game-changer in the history of LED lights. The American scientist, Shuji Nakamura, a pioneer in the lighting industry, is the founder of LED company Soraa, which has a history of working with the Department of Energy—both through EERE and our Advanced Research Projects Agency-Energy (ARPA-E)—on the subject of blue light diodes.

  15. LED Provides Effective and Efficient Parking Area Lighting at the NAVFAC

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Engineering Service Center | Department of Energy LED Provides Effective and Efficient Parking Area Lighting at the NAVFAC Engineering Service Center LED Provides Effective and Efficient Parking Area Lighting at the NAVFAC Engineering Service Center Document details new lighting technology that reduces energy consumption and reduces maintenance, while providing effective illumination. Download the new lighting technology document. (1.07 MB) More Documents & Publications Effective White

  16. High Efficiency LED Lamp for Solid-State Lighting

    SciTech Connect

    James Ibbetson

    2006-12-31

    This report contains a summary of technical achievements during a three-year project to demonstrate high efficiency, solid-state lamps based on gallium nitride/silicon carbide light-emitting diodes. Novel chip designs and fabrication processes are described for a new type of nitride light-emitting diode with the potential for very high efficiency. This work resulted in the demonstration of blue light-emitting diodes in the one watt class that achieved up to 495 mW of light output at 350 mA drive current, corresponding to quantum and wall plug efficiencies of 51% and 45%, respectively. When combined with a phosphor in Cree's 7090 XLamp package, these advanced blue-emitting devices resulted in white light-emitting diodes whose efficacy exceeded 85 lumens per watt. In addition, up to 1040 lumens at greater than 85 lumens per watt was achieved by combining multiple devices to make a compact white lamp module with high optical efficiency.

  17. Largest-area Photonic Crystal LED Fabricated Demonstrates Uniform Light Emission

    Office of Energy Efficiency and Renewable Energy (EERE)

    Lumileds Lighting, the University of New Mexico, and Sandia National Laboratories teamed to demonstrate uniform light emission from the largest-area III-Nitride photonic crystal LED (1 x 1 mm2) ever fabricated. Most previous photonic crystal LED research has relied on small-area patterns written by slow, serial-writing electron-beam lithography.

  18. Demonstration Assessment of Light-Emitting Diode (LED) Post-Top Lighting at Central Park in New York City

    SciTech Connect

    Myer, Michael; Goettel, Russell T.; Kinzey, Bruce R.

    2012-09-30

    A review of five post-top light-emitting diode (LED) pedestrian luminaires installed in New York City's Central Park for possible replacement to the existing metal halide post-top luminaire. This report reviews the energy savings potential and lighting delivered by the LED post-top luminaires.

  19. Chip-Scale Power Conversion for LED Lighting: Integrated Power Chip Converter for Solid-State Lighting

    SciTech Connect

    2010-10-01

    ADEPT Project: Teledyne is developing cost-effective power drivers for energy-efficient LED lights that fit on a compact chip. These power drivers are important because they transmit power throughout the LED device. Traditional LED driver components waste energy and don't last as long as the LED itself. They are also large and bulky, so they must be assembled onto a circuit board separately which increases the overall manufacturing cost of the LED light. Teledyne is shrinking the size and improving the efficiency of its LED driver components by using thin layers of an iron magnetic alloy and new gallium nitride on silicon devices. Smaller, more efficient components will enable the drivers to be integrated on a single chip, reducing costs. The new semiconductors in Teledyne's drivers can also handle higher levels of power and last longer without sacrificing efficiency. Initial applications for Teledyne's LED power drivers include refrigerated grocery display cases and retail lighting.

  20. Life-Cycle Assessment of Energy and Environmental Impacts of LED Lighting Products Part 2: LED Manufacturing and Performance

    SciTech Connect

    Scholand, Michael; Dillon, Heather E.

    2012-05-01

    Part 2 of the project (this report) uses the conclusions from Part 1 as a point of departure to focus on two objectives: producing a more detailed and conservative assessment of the manufacturing process and providing a comparative LCA with other lighting products based on the improved manufacturing analysis and taking into consideration a wider range of environmental impacts. In this study, we first analyzed the manufacturing process for a white-light LED (based on a sapphire-substrate, blue-light, gallium-nitride LED pumping a yellow phosphor), to understand the impacts of the manufacturing process. We then conducted a comparative LCA, looking at the impacts associated with the Philips Master LEDbulb and comparing those to a CFL and an incandescent lamp. The comparison took into account the Philips Master LEDbulb as it is now in 2012 and then projected forward what it might be in 2017, accounting for some of the anticipated improvements in LED manufacturing, performance and driver electronics.

  1. Evaluation of Metal Halide, Plasma, and LED Lighting Technologies for a Hydrogen Fuel Cell Mobile Light (H 2 LT)

    DOE PAGES [OSTI]

    Miller, L. B.; Donohoe, S. P.; Jones, M. H.; White, W. A.; Klebanoff, L. E.; Velinsky, S. A.

    2015-04-22

    This article reports on the testing and comparison of a prototype hydrogen fuel cell light tower (H2LT) and a conventional diesel-powered metal halide light trailer for use in road maintenance and construction activities. The prototype was originally outfitted with plasma lights and then with light-emitting diode (LED) luminaires. Light output and distribution, lighting energy efficiency (i.e., efficacy), power source thermal efficiency, and fuel costs are compared. The metal halide luminaires have 2.2 and 3.1 times more light output than the plasma and LED luminaires, respectively, but they require more power/lumen to provide that output. The LED luminaires have 1.6 timesmore » better light efficacy than either the metal halide or plasma luminaires. The light uniformity ratios produced by the plasma and LED towers are acceptable. The fuel cell thermal efficiency at the power required to operate the plasma lights is 48%, significantly higher than the diesel generator efficiency of 23% when operating the metal halide lights. Due to the increased efficiency of the fuel cell and the LED lighting, the fuel cost per lumen-hour of the H2LT is 62% of the metal halide diesel light tower assuming a kilogram of hydrogen is twice the cost of a gallon of diesel fuel.« less

  2. Measured Off-Grid LED Lighting System Performance

    SciTech Connect

    Granderson, Jessica; Galvin, James; Bolotov, Dmitriy; Clear, Robert; Jacobson, Arne; Mills, Evan

    2008-12-18

    This report is a product of our ongoing effort to support the development of high-quality yet affordable products for off-grid lighting in the developing world that have good potential to succeed in the market. The effort includes work to develop low-cost testing procedures, to identify useful performance metrics, and to facilitate the development of industry standards and product rating protocols. We conducted laboratory testing of nine distinct product lines. In some cases we also tested multiple generations of a single product line and/or operating modes for a product. The resultsare summarized in Table 1. We found that power consumption and light output varied by nearly a factor of 12, with efficacy varying by a factor of more than six. Of particular note, overall luminous efficacy varied from 8.2 to 53.1 lumens per watt. Color quality indices variedmaterially, especially for correlated color temperature. Maximum illuminance, beamcandlepower, and luminance varied by 8x, 32x, and 61x respectively, suggesting considerable differences among products in terms of service levels and visual comfort. Glare varied by1.4x, and was above acceptable thresholds in most cases. Optical losses play a role in overall performance, varying by a factor of 3.2 and ranging as high as 24percent. These findings collectively indicate considerable potential for improved product design.

  3. Text-Alternative Version: LED Site Lighting in the Commercial Building

    Energy Saver

    Sector: Opportunities, Challenges, and the CBEA Performance Specification | Department of Energy Site Lighting in the Commercial Building Sector: Opportunities, Challenges, and the CBEA Performance Specification Text-Alternative Version: LED Site Lighting in the Commercial Building Sector: Opportunities, Challenges, and the CBEA Performance Specification Below is the text-alternative version of the LED Site Lighting in the Commercial Building Sector: Opportunities, Challenges, and the CBEA

  4. An Efficient LED System-in-Module for General Lighting Applications

    SciTech Connect

    2008-09-14

    The objective of the project was to realize an LED-based lighting technology platform for general illumination, starting with LED chips, and integrating the necessary technologies to make compact, user-friendly, high-efficiency, energy-saving sources of controlled white (or variable-colored) light. The project is to build the system around the LEDs, and not to work on the LEDs themselves, in order that working products can be introduced soon after the LEDs reach suitable efficiency for mass-production of high-power light sources for general illumination. Because the light sources are intended for general illumination, color must be accurately maintained, requiring feedback control in the electronics. The project objective has been realized and screw base demonstrators, based on the technology developed in the project, have been built.

  5. Rise and Shine: Lighting the World with 10 Billion LED Bulbs | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy Rise and Shine: Lighting the World with 10 Billion LED Bulbs Rise and Shine: Lighting the World with 10 Billion LED Bulbs December 7, 2015 - 9:23am Addthis Rise and Shine: Lighting the World with 10 Billion LED Bulbs Gabrielle Dreyfus, Ph.D. Gabrielle Dreyfus, Ph.D. Senior Policy Analyst, Office of International Climate and Clean Energy. Chad Gallinat, Ph.D. Chad Gallinat, Ph.D. International Climate Fellow, Office of International Climate and Clean Energy Stand next to a

  6. Scalable Light Module for Low-Cost, High Efficiency LED Luminaires |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Scalable Light Module for Low-Cost, High Efficiency LED Luminaires Scalable Light Module for Low-Cost, High Efficiency LED Luminaires Lead Performer: Cree, Inc. - Durham, NC DOE Total Funding: $2,349,704 Cost Share: $2,349,704 Project Term: 8/1/2013 - 7/31/2015 Funding Opportunity: SSL Manufacturing R&D Funding Opportunity Announcement (FOA) DE-FOA-000079 Project Objective This project plans to develop a versatile, low-cost, low profile LED light-module architecture

  7. Replacement of Lighting Fixtures with LED Energy Efficient Lights at the Parking Facility, Milwaukee, Wisconsin

    SciTech Connect

    David Brien

    2012-06-21

    The Forest County Potawatomi Community (FCPC or Tribe) owns a six-story parking facility adjacent to its Potawatomi Bingo Casino (the Casino) in Milwaukee, Wisconsin, as well as a valet parking facility under the Casino (collectively, the Parking Facility). The Parking Facility contained 205-watt metal halide-type lights that, for security reasons, operated 24 hours per day, 7 days per week. Starting on August 30, 2010, the Tribe replaced these fixtures with 1,760 state-of-the-art, energy efficient 55-Watt LED lights. This project resulted in an immediate average reduction in monthly peak demand of 238 kW over the fourth quarter of 2010. The average reduction in monthly peak demand from October 1 through December 31, 2010 translates into a forecast annual electrical energy reduction of approximately 1,995,000 kWh or 47.3% of the pre-project demand. This project was technically effective, economically feasible, and beneficial to the public not only in terms of long term energy efficiency and associated emissions reductions, but also in the short-term jobs provided for the S.E. Wisconsin region. The project was implemented, from approval by U.S. Department of Energy (DOE) to completion, in less than 6 months. The project utilized off-the-shelf proven technologies that were fabricated locally and installed by local trade contractors.

  8. DOE Publishes GATEWAY Report on LED Lighting in a Performing Arts Setting

    Energy.gov [DOE]

    The U.S. Department of Energy has released a report on a GATEWAY demonstration of LED lighting at the University of Florida's Nadine McGuire Theatre and Dance Pavilion in Gainesville. Four interior...

  9. LED Provides Effective and Efficient Parking Area Lighting at the NAVFAC Engineering Service Center

    SciTech Connect

    2010-08-12

    U.S. Department of Energy (DOE) Federal Energy Management Program (FEMP) emerging technology case study showcasing LED lighting to improve energy efficiency in parking areas at the NAVFAC Engineering Services Center.

  10. Lumileds Develops High-Voltage LED Light Engine with Integrated Driver

    Energy.gov [DOE]

    With the help of DOE funding, Lumileds has developed a high-voltage LED light engine with an integrated driver, achieving an efficacy greater than 128 lm/W at a luminous flux greater than 4,100 lm...

  11. Life-Cycle Assessment of Energy and Environmental Impacts of LED Lighting Products

    Energy.gov [DOE]

    This March 28, 2013 webcast reviewed DOE's recently completed three-part study of the life-cycle energy and environmental impacts of LED lighting products relative to incandescent and CFL...

  12. Researchers Say They've Solved the Mystery of LED Lighting "Droop"

    Office of Energy Efficiency and Renewable Energy (EERE)

    Despite being cool, ultra-efficient and long lasting, the light-emitting diode (LED) faces a problem called “efficiency droop.” New findings from simulations carried out at the National Energy Research Scientific Computer Center (NERSC) have unearthed droop’s elusive cause, researchers say, paving the way for wider LED use. An illustration of nitride-based LEDs.| Courtesy of the National Energy Research Scientific Computing Center.

  13. 99th Regional Support Command Uses LED Lighting to Capture Significant Savings

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    9th Regional Support Command Uses LED Lighting to Capture Significant Savings The United States Army Reserve (USAR) 99th Regional Support Command (RSC) won a 2016 Interior Lighting Campaign award for a trofer lighting upgrade that is expected to save 184,000 kWh annually, roughly equivalent to the energy use of 17 homes. The lighting upgrades took place at the Technical Sergeant Vernon McGarity Army Reserve Center in Coraopolis, Pennsylvania, where old fuorescent luminaires were replaced with

  14. Enhancing the Output of LED Lighting | U.S. DOE Office of Science (SC)

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Enhancing the Output of LED Lighting Basic Energy Sciences (BES) BES Home About Research Facilities Science Highlights Benefits of BES Funding Opportunities Basic Energy Sciences Advisory Committee (BESAC) Community Resources Contact Information Basic Energy Sciences U.S. Department of Energy SC-22/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3081 F: (301) 903-6594 E: Email Us More Information » 04.01.12 Enhancing the Output of LED Lighting Adding

  15. Technical Feasibility Assessment of LED Roadway Lighting on the Golden Gate

    Office of Scientific and Technical Information (OSTI)

    Bridge (Technical Report) | SciTech Connect Technical Feasibility Assessment of LED Roadway Lighting on the Golden Gate Bridge Citation Details In-Document Search Title: Technical Feasibility Assessment of LED Roadway Lighting on the Golden Gate Bridge Subsequent to preliminary investigations by the Golden Gate Bridge Highway & Transportation District (GGB), in coordination with Pacific Gas & Electric (PG&E), the GATEWAY Demonstration program was asked to evaluate the technical

  16. Towards Truly White LED Lighting | U.S. DOE Office of Science (SC)

    Office of Science (SC)

    Truly White LED Lighting Basic Energy Sciences (BES) BES Home About Research Facilities Science Highlights Benefits of BES Funding Opportunities Basic Energy Sciences Advisory Committee (BESAC) Community Resources Contact Information Basic Energy Sciences U.S. Department of Energy SC-22/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3081 F: (301) 903-6594 E: Email Us More Information » 09.01.13 Towards Truly White LED Lighting Adding platinum atoms tunes the

  17. 99th Regional Support Command Uses LED Lighting to Capture Significant

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Savings | Department of Energy 99th Regional Support Command Uses LED Lighting to Capture Significant Savings 99th Regional Support Command Uses LED Lighting to Capture Significant Savings Case study describes how the Army Reserve 99th Regional Support Command (RSC) cut its energy consumption in half at the Support Command's Technical Sergeant Vernon McGarity Army Reserve Center by replacing more than 1,200 fluorescent troffers with 46 W and 61 W LED troffers with dimmers. The site achieved

  18. Development of Efficient UV-LED Phosphor Coatings for Energy Saving Solid State Lighting

    SciTech Connect

    Uwe Happek

    2006-05-15

    The University of Georgia, in collaboration with GE Global Research, has investigated the relevant quenching mechanism of phosphor coatings used in white light devices based on UV LEDs. The final goal of the project was the design and fabrication of a high-efficacy white light UV-LED device through improved geometry and optimized phosphor coatings. At the end of the research period, which was extended to seamlessly carry over the research to a follow-up program, we have demonstrated a two-fold improvement in the conversion efficiency of a white light LED device, where the increase efficacy is due to both improved phosphor quantum efficiency and lamp geometry. Working prototypes have been displayed at DOE sponsored meetings and during the final presentation at the DOE Headquarters in Washington, DC. During the first phase of the project, a fundamental understanding of quenching processes in UV-LEDs was obtained, and the relationships that describe the performance of the phosphor as a function of photon flux, temperature, and phosphor composition were established. In the second phase of the project, these findings were then implemented to design the improved UV-LED lamp. In addition, our research provides a road map for the design of efficient white light LEDs, which will be an important asset during a follow-up project led by GE.

  19. Enhanced light extraction in tunnel junction-enabled top emitting UV LEDs

    DOE PAGES [OSTI]

    Zhang, Yuewei; Allerman, Andrew A.; Krishnamoorthy, Sriram; Akyol, Fatih; Moseley, Michael W.; Armstrong, Andrew M.; Rajan, Siddharth

    2016-04-11

    The efficiency of ultra violet LEDs has been critically limited by the absorption losses in p-type and metal layers. In this work, surface roughening based light extraction structures are combined with tunneling based p-contacts to realize highly efficient top-side light extraction efficiency in UV LEDs. Surface roughening of the top n-type AlGaN contact layer is demonstrated using self-assembled Ni nano-clusters as etch mask. The top surface roughened LEDs were found to enhance external quantum efficiency by over 40% for UV LEDs with a peak emission wavelength of 326 nm. The method described here can enable highly efficient UV LEDs withoutmore » the need for complex manufacturing methods such as flip chip bonding.« less

  20. Lumen Maintenance and Light Loss Factors: Consequences of Current Design Practices for LED's

    SciTech Connect

    Royer, Michael P.

    2013-09-17

    Synopsis: Light loss factors are used to help lighting systems meet quantitative design criteria throughout the life of the installation, but they also influence energy use. As the light sources currently being specified continue to evolve, it is necessary to reevaluate the methods used in calculating light loss factors, as well as carefully consider the consequences of different product performance attributes. Because of the unique operating characteristics of LEDs and lack of a comprehensive lifetime rating—as well as the problematic relationship between lifetime and lumen maintenance—determining an appropriate lamp lumen depreciation (LLD) factor for LED products is difficult. As a result, a unique solution has been advocated: when quantity of light is an important design consideration, the IES recommends using an LLD of not greater than 0.70. This method deviates from the typical practice for conventional sources of using the ratio of mean to initial lumen output, and can misrepresent actual performance, increase energy use, and inhibit comparisons between products. This paper discusses the complications related to LLD and LEDs, compares the performance of conventional and LED products, and examines alternatives to a maximum LLD of 0.70 for LEDs.

  1. Municipal Consortium Releases Updated Model Specification for LED Roadway Luminaires

    Energy.gov [DOE]

    The U.S. Department of Energy's Municipal Solid-State Street Lighting Consortium (MSSLC) has released the first updated version of its Model Specification for LED Roadway Luminaires. A “living...

  2. Assessing the Performance of 5mm White LED Light Sources forDeveloping-Country Applications

    SciTech Connect

    Mills, Evan

    2007-05-03

    Some white light-emitting diode (LED) light sources haverecently attained levels of efficiency and cost that allow them tocompete with fluorescent lighting for off-grid applications in thedeveloping world. Additional attributes (optics, size, ruggedness, andservice life) make them potentially superior products. Enormousreductions in energy use and greenhouse-gas emissions are thus possible,and system costs can be much lower given the ability to downsize thecharging and energy storage components compared to a fluorescentstrategy. However, there is a high risk of "market-spoiling" if inferiorproducts are introduced and result in user dissatisfaction. Completesystems involve the integration of light sources and optics, energysupply, and energy storage. A natural starting point for evaluatingproduct quality is to focus on the individual light sources. This reportdescribes testing results for batches of 10 5mm white LEDs from 26manufacturers. Efficacies and color properties are presented.

  3. Development of UV-LED Phosphor Coatings for High Efficiency Solid State Lighting

    SciTech Connect

    U. Happek

    2005-01-01

    The University of Georgia, in collaboration with GE Global Research, is investigating the relevant quenching mechanism of phosphor coatings used in white light devices based on UV LEDs in a focused eighteen month program. The final goal is the design of high-efficacy white UV-LEDs through improved and optimized phosphor coatings. At the end of the first year, we have reached a fundamental understanding of quenching processes in UV-LED phosphors and have observed severe quenching in standard devices under extreme operating conditions. Relationships are being established that describe the performance of the phosphor as a function of photon flux, temperature, and phosphor composition. These relationships will provide a road map for the design of efficient white light LEDs during the final six months of the project.

  4. LED Pulser

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Cost The high-brightness, rapidly pulsed, multicolor light-emitting diode (LED) driver delivers lighting performance that exceeds that of conventional (laserarc-light) sources ...

  5. Demonstration Assessment of Light-Emitting Diode (LED) Residential Downlights and Undercabinet Lights

    SciTech Connect

    Ton, M. K.; Richman, E. E.; Gilbride, T. L.

    2008-10-01

    This document is a report of observations and results obtained from a lighting demonstration project conducted under the U.S. Department of Energy (DOE) Solid-State Lighting (SSL) GATEWAY Demonstration Program.

  6. Demonstration Assessment of Light-Emitting Diode (LED) Parking Lot Lighting, Phase I

    SciTech Connect

    Myer, M. A.; Goettel, R. T.

    2010-06-22

    U.S. DOE Solid-State Lighting Technology Demonstration GATEWAY Program Report on the TJMaxx Demonstration.

  7. Demonstration Assessment of Light-Emitting Diode (LED) Freezer Case Lighting

    Energy.gov [DOE]

    This document is a report of observations and results obtained from a lighting demonstration project conducted under a U.S. Department of Energy program. The program supports demonstrations of high-performance solid-state lighting (SSL) products in order to develop empirical data and experience with in-the-field applications of this advanced lighting technology for plant-wide improvement.

  8. Development of Advanced LED Phosphors by Spray-based Processes for Solid State Lighting

    SciTech Connect

    Cabot Corporation

    2007-09-30

    The overarching goal of the project was to develop luminescent materials using aerosol processes for making improved LED devices for solid state lighting. In essence this means improving white light emitting phosphor based LEDs by improvement of the phosphor and phosphor layer. The structure of these types of light sources, displayed in Figure 1, comprises of a blue or UV LED under a phosphor layer that converts the blue or UV light to a broad visible (white) light. Traditionally, this is done with a blue emitting diode combined with a blue absorbing, broadly yellow emitting phosphor such as Y{sub 3}Al{sub 5}O{sub 12}:Ce (YAG). A similar result may be achieved by combining a UV emitting diode and at least three different UV absorbing phosphors: red, green, and blue emitting. These emitted colors mix to make white light. The efficiency of these LEDs is based on the combined efficiency of the LED, phosphor, and the interaction between the two. The Cabot SSL project attempted to improve the over all efficiency of the LED light source be improving the efficiency of the phosphor and the interaction between the LED light and the phosphor. Cabot's spray based process for producing phosphor powders is able to improve the brightness of the powder itself by increasing the activator (the species that emits the light) concentration without adverse quenching effects compared to conventional synthesis. This will allow less phosphor powder to be used, and will decrease the cost of the light source; thus lowering the barrier of entry to the lighting market. Cabot's process also allows for chemical flexibility of the phosphor particles, which may result in tunable emission spectra and so light sources with improved color rendering. Another benefit of Cabot's process is the resulting spherical morphology of the particles. Less light scattering results when spherical particles are used in the phosphor layer (Figure 1) compared to when conventional, irregular shaped phosphor particles

  9. Demonstration Assessment of Light-Emitting Diode (LED) Roadway Lighting at the I-35W Bridge, Minneapolis, MN

    SciTech Connect

    Kinzey, Bruce R.; Myer, Michael

    2009-08-31

    This report describes the process and results of a demonstration of solid-state lighting (SSL) technology conducted in 2009 at the recently reconstructed I-35W bridge in Minneapolis, MN. The project was supported under the U.S. Department of Energy (DOE) Solid-State Lighting GATEWAY Technology Demonstration Program. Other participants in the demonstration project included the Minnesota Department of Transportation (Mn/DOT), Federal Highways Administration (FHWA), and BetaLED™ (a division of Ruud Lighting). Pacific Northwest National Laboratory (PNNL) conducted the measurements and analysis of the results. DOE has implemented a three-year evaluation of the LED luminaires in this installation in order to develop new longitudinal field data on LED performance in a challenging, real-world environment. This document provides information through the initial phase of the I-35W bridge project, up to and including the opening of the bridge to the public and the initial feedback received on the LED lighting installation from bridge users. Initial findings of the evaluation are favorable, with minimum energy savings level of 13% for the LED installation relative to the simulated base case using 250W high-pressure sodium (HPS) fixtures. The LEDs had an average illuminance level of 0.91 foot candles compared to 1.29 fc for the HPS lamps. The LED luminaires cost $38,000 more than HPS lamps, yielding a lengthy payback period, however the bridge contractor had offered to include the LED luminaires as part of the construction package at no additional cost. One potentially significant benefit of the LEDs in this installation is avoiding rolling lane closures on the heavily-traveled interstate bridge for the purpose of relamping the HPS fixtures. Rolling lane closures involve multiple crew members and various maintenance and safety vehicles, diversion of traffic, as well as related administrative tasks (e.g., approvals, scheduling, etc.). Mn/DOT records show an average cost of

  10. Lumileds Develops High-Voltage LED Light Engine with Integrated Driver

    Energy.gov [DOE]

    With the help of DOE funding, Lumileds has developed a high-voltage LED light engine with an integrated driver, achieving an efficacy of 128 lm/W at a luminous flux greater than 4,100 lm, a CCT of...

  11. Advanced method for increasing the efficiency of white light quantum dot LEDs

    SciTech Connect

    Duty, Chad E [ORNL; Bennett, Charlee J C [ORNL; Sabau, Adrian S [ORNL; Jellison Jr, Gerald Earle [ORNL; Boudreaux, Philip R [ORNL; Walker, Steven C [ORNL; Ott, Ronald D [ORNL

    2011-01-01

    Covering a light-emitting diode (LED) with quantum dots (QDs) can produce a broad spectrum of white light. However, current techniques for applying QDs to LEDs suffer from a high density of defects and a non-uniform distribution of QDs, which, respectively, diminish the efficiency and quality of emitted light. Oak Ridge National Laboratory (ORNL) has the unique capability to thermally anneal QD structures at extremely high power densities for very short durations. This process, called pulse thermal processing (PTP), reduces the number of point defects while maintaining the size and shape of the original QD nanostructure. Therefore, the efficiency of the QD wavelength conversion layer is improved without altering the emission spectrum defined by the size distribution of theQD nanoparticles. The current research uses a thermal model to predict annealing temperatures during PTP and demonstrates up to a 300% increase in photoluminescence for QDs on passive substrates.

  12. Phosphors for near UV-Emitting LED's for Efficacious Generation of White Light

    SciTech Connect

    McKittrick, Joanna

    2013-09-30

    1) We studied phosphors for near-UV (nUV) LED application as an alternative to blue LEDs currently being used in SSL systems. We have shown that nUV light sources could be very efficient at high current and will have significantly less binning at both the chip and phosphor levels. We identified phosphor blends that could yield 4100K lamps with a CRI of approximately 80 and LPWnUV,opt equal to 179 for the best performing phosphor blend. Considering the fact that the lamps were not optimized for light coupling, the results are quite impressive. The main bottleneck is an optimum blue phosphor with a peak near 440 nm with a full width half maximum of about 25 nm and a quantum efficiency of >95%. Unfortunately, that may be a very difficult task when we want to excite a phosphor at ~400 nm with a very small margin for Stokes shift. Another way is to have all the phosphors in the blend having the excitation peak at 400 nm or slightly shorter wavelength. This could lead to a white light source with no body color and optimum efficacy due to no self-absorption effects by phosphors in the blend. This is even harder than finding an ideal blue phosphor, but not necessarily impossible. 2) With the phosphor blends identified, light sources using nUV LEDs at high current could be designed with comparable efficacy to those using blue LEDs. It will allow us to design light sources with multiple wattages using the same chips and phosphor blends simply by varying the input current. In the case of blue LEDs, this is not currently possible because varying the current will lower the efficacy at high current and alter the color point. With improvement of phosphor blends, control over CRI could improve. Less binning at the chip level and also at the phosphor blend level could reduce the cost of SSL light sources. 3) This study provided a deeper understanding of phosphor characteristics needed for LEDs in general and nUV LEDs in particular. Two students received Ph.D. degrees and three

  13. Technical Feasibility Assessment of LED Roadway Lighting on the Golden Gate Bridge

    SciTech Connect

    Tuenge, Jason R.

    2012-09-01

    Subsequent to preliminary investigations by the Golden Gate Bridge Highway & Transportation District (GGB), in coordination with Pacific Gas & Electric (PG&E), the GATEWAY Demonstration program was asked to evaluate the technical feasibility of replacing existing roadway lighting on the bridge with products utilizing LED technology. GGB and PG&E also indicated interest in induction (i.e., electrodeless fluorescent) technology, since both light source types feature rated lifetimes significantly exceeding those of the existing high-pressure sodium (HPS) and low-pressure sodium (LPS) products. The goal of the study was to identify any solutions which would reduce energy use and maintenance without compromising the quantity or quality of existing illumination. Products used for roadway lighting on the historic bridge must be installed within the existing amber-lensed shoebox-style luminaire housings. It was determined that induction technology does not appear to represent a viable alternative for the roadway luminaires in this application; any energy savings would be attributable to a reduction in light levels. Although no suitable LED retrofit kits were identified for installation within existing luminaire housings, several complete LED luminaires were found to offer energy savings of 6-18%, suggesting custom LED retrofit kits could be developed to match or exceed the performance of the existing shoeboxes. Luminaires utilizing ceramic metal halide (CMH) were also evaluated, and some were found to offer 28% energy savings, but these products might actually increase maintenance due to the shorter rated lamp life. Plasma technology was evaluated, as well, but no suitable products were identified. Analysis provided in this report was completed in May 2012. Although LED technologies are expected to become increasingly viable over time, and product mock-ups may reveal near-term solutions, some options not currently considered by GGB may ultimately merit evaluation. For

  14. Demonstration Assessment of Light-Emitting Diode (LED) Freezer Case Lighting

    SciTech Connect

    Rishman, E. E.; Tuenge, J. R.

    2009-10-01

    This report describes the process and results of a demonstration of solid-state lighting (SSL) technology combined with occupancy sensors in a set of upright grocery store freezer cases.

  15. Impact of photonic crystals on LED light extraction efficiency: approaches and limits to vertical structure designs

    SciTech Connect

    Matioli, Elison; Weisbuch, Claude

    2010-08-19

    The enhancement of the extraction efficiency in light emitting diodes (LEDs) through the use of photonic crystals (PhCs) requires a structure design that optimizes the interaction of the guided modes with the PhCs. The main optimization parameters are related to the vertical structure of the LED, such as the thickness of layers, depth of the PhCs, position of the quantum wells as well as the PhC period and fill factor. We review the impact of the vertical design of different approaches of PhC LEDs through a theoretical and experimental standpoint, assessing quantitatively the competing mechanisms that act over each guided mode. Three approaches are described to overcome the main limitation of LEDs with surface PhCs, i.e. the insufficient interaction of low order guided modes with the PhCs. The introduction of an AlGaN confining layer in such structure is shown to be effective in extracting a fraction of the optical energy of low order modes; however, this approach is limited by the growth of the lattice mismatched AlGaN layer on GaN. The second approach, based on thin-film LEDs with PhCs, is limited by the presence of an absorbing reflective metal layer close to the guided modes that plays a major role in the competition between PhC extraction and metal dissipation. Finally, we demonstrate both experimentally and theoretically the superior extraction of the guided light in embedded PhC LEDs due to the higher interaction between all optical modes and the PhCs, which resulted in a close to unity extraction efficiency for this device. The use of high-resolution angle-resolved measurements to experimentally determine the PhC extraction parameters was an essential tool for corroborating the theoretical models and quantifying the competing absorption and extraction mechanisms in LEDs.

  16. Demonstration Assessment of Light Emitting Diode (LED) Commercial Garage Lights In the Providence Portland Medical Center, Portland, Oregon

    SciTech Connect

    Ton, My K.; Richman, Eric E.; Gilbride, Theresa L.

    2008-11-11

    This U.S. Department of Energy GATEWAY Demonstration project studied the applicability of light-emitting diode (LED) luminaires for commercial parking garage applications. High-pressure sodium (HPS) area luminaires were replaced with new LED area luminaires. The project was supported under the U.S. Department of Energy (DOE) Solid State Lighting Program. Other participants in the demonstration project included Providence Portland Medical Center in Portland, Oregon, the Energy Trust of Oregon, and Lighting Sciences Group (LSG) Inc. Pacific Northwest National Laboratory (PNNL) conducted the measurements and analysis of the results. PNNL manages GATEWAY demonstrations for DOE and represents their perspective in the conduct of the work. Quantitative and qualitative measurements of light and electrical power were taken at the site for both HPS and LED light sources. Economic costs were estimated and garage users’ responses to the new light sources were gauged with a survey. Six LED luminaires were installed in the below-ground parking level A, replacing six existing 150W HPS lamps spread out over two rows of parking spaces. Illuminance measurements were taken at floor level approximately every 4 ft on a 60-ft x 40-ft grid to measure light output of these LED luminaires which were termed the “Version 1” luminaires. PNNL conducted power measurements of the circuit in the garage to which the 6 luminaires were connected and determined that they drew an average of 82 W per lamp. An improved LED luminaire, Version 2, was installed in Level B of the parking garage. Illuminance measurements were not made of this second luminaire on site due to higher traffic conditions, but photometric measurements of this lamp and Version 1 were made in an independent testing laboratory and power usage for Version 2 was also measured. Version 1 was found to produce 3600 lumens and Version 2 was found to produce 4700 lumens of light and to consume 78 Watts. Maximum and minimum light

  17. Development of Advanced Manufacturing Methods for Warm White LEDs for General Lighting

    SciTech Connect

    Deshpande, Anirudha; Kolodin, Boris; Jacob, Cherian; Chowdhury, Ashfaqul; Kuenzler, Glenn; Sater, Karen; Aesram, Danny; Glaettli, Steven; Gallagher, Brian; Langer, Paul; Setlur, Anant; Beers, Bill

    2012-03-31

    GE Lighting Solutions will develop precise and efficient manufacturing techniques for the remote phosphor platform of warm-white LED products. In volume, this will be demonstrated to drive significant materials, labor and capital productivity to achieve a maximum possible 53% reduction in overall cost. In addition, the typical total color variation for these white LEDs in production will be well within the ANSI bins and as low as a 4-step MacAdam ellipse centered on the black body curve. Achievement of both of these objectives will be demonstrated while meeting a performance target of > 75 lm/W for a warm-white LED and a reliability target of <30% lumen drop / <2-step MacAdam ellipse shift, estimated over 50,000 hrs.

  18. Maintenance Practices for LED Streetlights | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Maintenance Practices for LED Streetlights Maintenance Practices for LED Streetlights This April 14, 2014 webinar answered important questions about the maintenance and reliability of LED streetlights, and how to take these issues into account when planning and preparing for a transition to LED street lighting. Presenters Glenn Cooper of the City of Boston, Stephen Crume of the City of Seattle, and Patrick Batte of the City of Las Vegas discussed actual field experiences of their respective LED

  19. LED lamp

    DOEpatents

    Galvez, Miguel; Grossman, Kenneth; Betts, David

    2013-11-12

    There is herein described a lamp for providing white light comprising a plurality of light sources positioned on a substrate. Each of said light sources comprises a blue light emitting diode (LED) and a dome that substantially covers said LED. A first portion of said blue light from said LEDs is transmitted through said domes and a second portion of said blue light is converted into a red light by a first phosphor contained in said domes. A cover is disposed over all of said light sources that transmits at least a portion of said red and blue light emitted by said light sources. The cover contains a second phosphor that emits a yellow light in response to said blue light. The red, blue and yellow light combining to form the white light and the white light having a color rendering index (CRI) of at least about 80.

  20. Revolutionary Method for Increasing the Efficiency of White Light Quantum Dot LEDs

    SciTech Connect

    Duty, Chad E [ORNL; Bennett, Charlee J C [ORNL; Sabau, Adrian S [ORNL; Jellison Jr, Gerald Earle [ORNL; Boudreaux, Philip R [ORNL; Walker, Steven C [ORNL; Ott, Ronald D [ORNL

    2011-01-01

    Covering a light-emitting diode (LED) with quantum dots (QDs) can produce a broad spectrum of white light. However, current techniques for applying QDs to LEDs suffer from a high density of defects and a non-uniform distribution of QDs, which respec-tively diminish the efficiency and quality of emitted light. Oak Ridge National Laboratory (ORNL) has the unique capability to thermally anneal QD structures at extremely high power densities for very short durations. This process, called pulse thermal proc-essing (PTP), reduces the number of point defects while main-taining the size and shape of the original QD nanostructure. Therefore, the efficiency of the QD wavelength conversion layer is improved without altering the emission spectrum defined by the size distribution of the quantum dot nanoparticles. The cur-rent research uses a thermal model to predict annealing tempera-tures during PTP and demonstrates up to a 300% increase in pho-toluminescence for QDs on passive substrates

  1. Philips Light Sources & Electronics is Developing an Efficient, Smaller, Cost-Effective Family of LED Drivers

    Energy.gov [DOE]

    With the help of DOE funding, Philips Light Sources & Electronics is developing a new family of LED drivers that are more efficient and cost-effective as well as smaller in size than currently available drivers. The new drivers are switch-mode power supplies that are similar to today's drivers, but with an improved design. In addition, they have a different topology—boost plus LLC—for wattages of 40W and above, but they retain the commonly used flyback topology at lower wattages.

  2. LED Lighting in a Performing Arts Building at the University of Florida

    SciTech Connect

    Miller, Naomi J.; Kaye, Stan; Coleman, Patricia; Wilkerson, Andrea M.; Perrin, Tess E.; Sullivan, Gregory P.

    2014-07-01

    The U.S. DOE GATEWAY Demonstration Program supports demonstrations of high-performance solid-state lighting (SSL) products in order to develop empirical data and experience with the in-the-field applications of this advanced lighting technology. This report describes the process and results of the 2013 - 2014 GATEWAY demonstration of SSL technology in the Nadine McGuire Theatre and Dance Pavilion at the University of Florida, Gainesville, FL. The LED solutions combined with dimming controls utilized in four interior spaces - the Acting Studio, Dance Studio, Scene Shop, and Dressing Room - received high marks from instructors, students/performers, and reduced energy use in all cases. The report discusses in depth and detail of each project area including specifications, energy savings, and user observations. The report concludes with lessons learned during the demonstration.

  3. LED Surgical Task Lighting Scoping Study: A Hospital Energy Alliance Project

    SciTech Connect

    Tuenge, Jason R.

    2011-01-17

    Tungsten-halogen (halogen) lamps have traditionally been used to light surgical tasks in hospitals, even though they are in many respects ill-suited to the application due to the large percentage of radiant energy outside the visible spectrum and issues with color rendering/quality. Light-emitting diode (LED) technology offers potential for adjustable color and improved color rendition/quality, while simultaneously reducing side-effects from non-visible radiant energy. It also has the potential for significant energy savings, although this is a fairly narrow application in the larger commercial building energy use sector. Based on analysis of available products and Hospital Energy Alliance member interest, it is recommended that a product specification and field measurement procedure be developed for implementation in demonstration projects.

  4. Evaluation of Metal Halide, Plasma, and LED Lighting Technologies for a Hydrogen Fuel Cell Mobile Light (H 2 LT)

    SciTech Connect

    Miller, L. B.; Donohoe, S. P.; Jones, M. H.; White, W. A.; Klebanoff, L. E.; Velinsky, S. A.

    2015-04-22

    This article reports on the testing and comparison of a prototype hydrogen fuel cell light tower (H2LT) and a conventional diesel-powered metal halide light trailer for use in road maintenance and construction activities. The prototype was originally outfitted with plasma lights and then with light-emitting diode (LED) luminaires. Light output and distribution, lighting energy efficiency (i.e., efficacy), power source thermal efficiency, and fuel costs are compared. The metal halide luminaires have 2.2 and 3.1 times more light output than the plasma and LED luminaires, respectively, but they require more power/lumen to provide that output. The LED luminaires have 1.6 times better light efficacy than either the metal halide or plasma luminaires. The light uniformity ratios produced by the plasma and LED towers are acceptable. The fuel cell thermal efficiency at the power required to operate the plasma lights is 48%, significantly higher than the diesel generator efficiency of 23% when operating the metal halide lights. Due to the increased efficiency of the fuel cell and the LED lighting, the fuel cost per lumen-hour of the H2LT is 62% of the metal halide diesel light tower assuming a kilogram of hydrogen is twice the cost of a gallon of diesel fuel.

  5. DOE Publishes GATEWAY Report on Portland’s LED Streetlight Conversion

    Energy.gov [DOE]

    The U.S. Department of Energy has released a GATEWAY report on the experiences of the City of Portland, OR, in converting its street lighting from high-pressure sodium to LED. Such largescale...

  6. Development of substrate-removal-free vertical ultraviolet light-emitting diode (RefV-LED)

    SciTech Connect

    Kurose, N. Aoyagi, Y.; Shibano, K.; Araki, T.

    2014-02-15

    A vertical ultraviolet (UV) light-emitting diode (LED) that does not require substrate removal is developed. Spontaneous via holes are formed in n-AlN layer epitaxially grown on a high conductive n+Si substrate and the injected current flows directly from the p-electrode to high doped n{sup +} Si substrate through p-AlGaN, multi-quantum wells, n-AlGaN and spontaneous via holes in n-AlN. The spontaneous via holes were formed by controlling feeding-sequence of metal-organic gas sources and NH{sub 3} and growth temperature in MOCVD. The via holes make insulating n-AlN to be conductive. We measured the current-voltage, current-light intensity and emission characteristics of this device. It exhibited a built-in voltage of 3.8 V and emission was stated at 350 nm from quantum wells with successive emission centered at 400 nm. This UV LED can be produced, including formation of n and p electrodes, without any resist process.

  7. DOE Publishes GATEWAY Report on High-Luminous-Flux LED Lighting in a High-Temperature Environment

    Energy.gov [DOE]

    The U.S. Department of Energy has released a GATEWAY report on a trial demonstration in which the incumbent quartz metal halide (QMH) area lighting was replaced with LED at three pole locations...

  8. Demonstration Assessment of Light Emitting Diode (LED) Residential Downlights and Undercabinet Lights in the Lane County Tour of Homes, Eugene, Oregon

    SciTech Connect

    Ton, My K.; Richman, Eric E.; Gilbride, Theresa L.

    2008-11-10

    In August 2008 the Pacific Northwest National Laboratory (PNNL) conducted a light emitting diode (LED) residential lighting demonstration project for the U.S. Department of Energy (DOE), Office of Building Technologies, as part of DOE’s Solid State Lighting (SSL) Technology Demonstration Gateway Program. Two lighting technologies, an LED replacement for downlight lamps (bulbs) and an LED undercabinet lighting fixture, were tested in the demonstration which was conducted in two homes built for the 2008 Tour of Homes in Eugene, Oregon. The homes were built by the Lane County Home Builders Association (HBA), and Future B Homes. The Energy Trust of Oregon (ETO) also participated in the demonstration project. The LED downlight product, the LR6, made by Cree LED Lighting Solutions acts as a screw-in replacement for incandescent and halogen bulbs in recessed can downlights. The second product tested is Phillips/Color Kinetics’ eW® Profile Powercore undercabinet fixture designed to mount under kitchen cabinets to illuminate the countertop and backsplash surfaces. Quantitative and qualitative measurements of light performance and electrical power usage were taken at each site before and after initially installed halogen and incandescent lamps were replaced with the LED products. Energy savings and simple paybacks were also calculated and builders who toured the homes were surveyed for their responses to the LED products. The LED downlight product drew 12 Watts of power, cutting energy use by 82% compared to the 65W incandescent lamp and by 84% compared to the 75W halogen lamp. The LED undercabinet fixture drew 10 watts, cutting energy use by 83% to 90% compared to the halogen product, which was tested at two power settings: a low power 60W setting and a high power 105W setting. The LED downlight consistently provided more light than the halogen and incandescent lamps in horizontal measurements at counter height and floor level. It also outperformed in vertical

  9. Text-Alternative Version: Using the Street and Parking Facility...

    Energy Saver

    Using the Street and Parking Facility Lighting Retrofit Financial Analysis Tool Text-Alternative Version: Using the Street and Parking Facility Lighting Retrofit Financial Analysis ...

  10. The City of Los Angeles LED Streetlight Program | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Videos » The City of Los Angeles LED Streetlight Program The City of Los Angeles LED Streetlight Program View the video about the Los Angeles LED streetlight program, featuring an interview with City of Los Angeles Bureau of Street Lighting Director, Ed Ebrahimian. View the text-alternative version.

  11. LED Update

    SciTech Connect

    Johnson, Mark L.; Gordon, Kelly L.

    2006-09-01

    This article, which will appear in RESIDENTIAL LIGHTING MAGAZINE, interviews PNNL's Kelly Gordon and presents the interview in question and answer format. The topic is a light emitting diode (LED) lighting also known as solid state lighting. Solid state lighting will be a new category in an energy efficient lighting fixture design competition called Lighting for Tomorrow sponsored by the US Department of Energy Emerging Technologies Office, the American Institute for Lighting, and the Consortium for Energy Efficiency. LED technology has been around since the ’60s, but it has been used mostly for indicator lights on electronics equipment. The big breakthrough was the development in the 1990s of blue LEDs which can be combined with the red and green LEDs that already existed to make white light. LEDs produce 25 to 40 lumens of light per watt of energy used, almost as much as a CFL (50 lumens per watt) and much more efficient than incandescent sources, which are around 15 lumens per watt. They are much longer lived and practical in harsh environments unsuitable for incandescent lighting. They are ready for niche applications now, like under-counter lighting and may be practical for additional applications as technological challenges are worked out and the technology is advancing in leaps and bounds.

  12. DOE Publishes Technical Brief Clarifying Misconceptions about Safety of LED Lighting

    Energy.gov [DOE]

    The spectral emission of LEDs is a frequent subject of concern, so to set the record straight, the U.S. Department of Energy has published a technical brief entitled True Colors: LEDs and the...

  13. Demonstration Assessment of Light-Emitting Diode (LED) Parking Lot Lighting at T.J.Maxx in Manchester, NH Phase I

    SciTech Connect

    Myer, Michael; Goettel, Russell T.

    2010-06-29

    A report describing the process and results of replacing existing parking lot lighting, looking at a LED option with occupancy sensors, and conventional alternates. Criteria include payback, light levels, occupant satisfaction. This report is Phase I of II. Phase I deals with initial installation.

  14. Illuminating the Pecking Order in Off-Grid Lighting: A Demonstration of LED Lighting for Saving Energy in the Poultry Sector

    SciTech Connect

    Tracy, Jennifer; Mills, Evan

    2010-11-06

    The Lumina Project and Lighting Africa conducted a full-scale field test involving a switch from kerosene to solar-LED lighting for commercial broiler chicken production at an off-grid farm in Kenya. The test achieved lower operating costs, produced substantially more light, improved the working environment, and had no adverse effect on yields. A strategy using conventional solar-fluorescent lighting also achieved comparable yields, but entailed a six-fold higher capital cost and significantly higher recurring battery replacement costs. Thanks to higher energy and optical efficiencies, the LED system provided approximately twice the illumination to the chicken-production area and yet drew less than half the power.At the study farm, 3000 chickens were grown in each of three identical houses under kerosene, fluorescent, and LED lighting configurations. Under baseline conditions, a yearly expenditure of 1,200 USD is required to illuminate the three houses with kerosene. The LED system eliminates this fuel use and expense with a corresponding simple payback time of 1.5 years, while the solar-fluorescent system has a payback time of 9.3 years. The corresponding reduction in fuel expenditure in both cases represents a 15percent increase in after-tax net income (revenues minus expenses) across the entire business operation. The differential cost-effectiveness between the LED and fluorescent systems would be substantially greater if the fluorescent system were upsized to provide the same light as the LED system. Providing light with the fluorescent or LED systems is also far more economical than connecting to the grid in this case. The estimated grid-connection cost at this facility is 1.7 million Kenya Schillings (approximately 21,250 USD), which is nearly six-times the cost of the fluorescent system and 35-times the cost of the LED system.The LED system also confers various non-energy benefits. The relative uniformity of LED lighting, compared to the fluorescent or

  15. Model Specification for LED Roadway Luminaires Webcast | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy Information Resources » Webcasts » Model Specification for LED Roadway Luminaires Webcast Model Specification for LED Roadway Luminaires Webcast This November 15, 2011 webcast presented information about the Model Specification for LED Roadway Luminaires developed by DOE's Municipal Solid-State Street Lighting Consortium. During the webcast, Jason Tuenge of Pacific Northwest National Laboratory provided an overview of the model specification and explained how it can be customized to

  16. Demonstration Assessment of LED Roadway Lighting: NE Cully Boulevard Portland, OR

    SciTech Connect

    Royer, Michael P.; Poplawski, Michael E.; Tuenge, Jason R.

    2012-06-29

    A new roadway lighting demonstration project was initiated in late 2010, which was planned in conjunction with other upgrades to NE Cully Boulevard, a residential collector road in the northeast area of Portland, OR. With the NE Cully Boulevard project, the Portland Bureau of Transportation hoped to demonstrate different light source technologies and different luminaires side-by-side. This report documents the initial performance of six different newly installed luminaires, including three LED products, one induction product, one ceramic metal halide product, and one high-pressure sodium (HPS) product that represented the baseline solution. It includes reported, calculated, and measured performance; evaluates the economic feasibility of each of the alternative luminaires; and documents user feedback collected from a group of local Illuminating Engineering Society (IES) members that toured the site. This report does not contain any long-term performance evaluations or laboratory measurements of luminaire performance. Although not all of the installed products performed equally, the alternative luminaires generally offered higher efficacy, more appropriate luminous intensity distributions, and favorable color quality when compared to the baseline HPS luminaire. However, some products did not provide sufficient illumination to all areas—vehicular drive lanes, bicycle lanes, and sidewalks—or would likely fail to meet design criteria over the life of the installation due to expected depreciation in lumen output. While the overall performance of the alternative luminaires was generally better than the baseline HPS luminaire, cost remains a significant barrier to widespread adoption. Based on the cost of the small quantity of luminaires purchased for this demonstration, the shortest calculated payback period for one of the alternative luminaire types was 17.3 years. The luminaire prices were notably higher than typical prices for currently available luminaires

  17. Scalable Light Module for Low-Cost, High Efficiency LED Luminaires

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... Mechanical stability with minimal BOM 6 Progress and Accomplishments LEDs: higher ... have been presented at recent DOE SSL Manufacturing and R&D Workshops Project Integration ...

  18. DOE Publishes GATEWAY Report on High-Luminous-Flux LED Lighting...

    Energy.gov [DOE] (indexed site)

    If high-flux LED technology performs well in a region with high ambient temperature and solar radiation, it can perform well in most outdoor environments. The full report and a ...

  19. Text-Alternative Version: LED Lighting in a Performing Arts Building Webinar

    Office of Energy Efficiency and Renewable Energy (EERE)

     Welcome ladies and gentlemen. I'm Bob Davis with the Pacific Northwest National Laboratory, and I'd like to welcome you to today's webcast titled, LEDs, Can They Perform in a Performing Arts...

  20. Materials and Designs for High-Efficacy LED Light Engines | Department...

    Energy.gov [DOE] (indexed site)

    DOE Technology Manager: Jim Brodrick Lead Performer: Cree Inc. More Documents & Publications Next-Generation "Giant" Quantum Dots: Performance-Engineered for Lighting Scalable ...

  1. Just the Facts, Ma'am: Getting the Most out of LED Lighting Facts...

    Energy Saver

    www.energystar.govlighting * Certification FAQs: - www.energystargovlightingfaqs * Rebate Summary: - www.energystar.govDIME * Contact: Lighting@energystar.gov 13 What is the...

  2. high-power LEDs

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Cost The high-brightness, rapidly pulsed, multicolor light-emitting diode (LED) driver delivers lighting performance that exceeds that of conventional (laserarc-light) sources ...

  3. Demonstration Assessment of Light-Emitting Diode (LED) Retrofit Lamps at the Lobby of the Bonneville Power Administration, Portland, OR

    SciTech Connect

    Miller, Naomi

    2011-07-01

    This report describes the process and results of a demonstration of solid-state lighting (SSL) technology in the lobby of the Bonneville Power Administration (BPA) headquarters building in Portland, Oregon. The project involved a simple retrofit of 32 track lights used to illuminate historical black-and-white photos and printed color posters from the 1930s and 1940s. BPA is a federal power marketing agency in the Northwestern United States, and selected this prominent location to demonstrate energy efficient light-emitting diode (LED) retrofit options that not only can reduce the electric bill for their customers but also provide attractive alternatives to conventional products, in this case accent lighting for BPA's historical artwork.

  4. Demonstration Assessment of Light Emitting Diode (LED) Walkway Lighting at the Federal Aviation Administration William J. Hughes Technical Center, in Atlantic City, New Jersey

    SciTech Connect

    Kinzey, Bruce R.; Myer, Michael

    2008-03-18

    This report documents the results of a collaborative project to demonstrate a solid state lighting (SSL) general illumination product in an outdoor area walkway application. In the project, six light-emitting diode (LED) luminaires were installed to replace six existing high pressure sodium (HPS) luminaires mounted on 14-foot poles on a set of exterior walkways and stairs at the Federal Aviation Administration (FAA) William J. Hughes Technical Center in Atlantic City, New Jersey, during December, 2007. The effort was a U.S. Department of Energy (DOE) SSL Technology Gateway Demonstration that involved a collaborative teaming agreement between DOE, FAA and Ruud Lighting (and their wholly owned division, Beta LED). Pre- and post-installation power and illumination measurements were taken and used in calculations of energy savings and related economic payback, while personnel impacted by the new lights were provided questionnaires to gauge their perceptions and feedback. The SSL product demonstrated energy savings of over 25% while maintaining illuminance levels and improving illuminance uniformity. PNNL's economic analysis yielded a variety of potential payback results depending on the assumptions used. In the best case, replacing HPS with the LED luminaire can yield a payback as low as 3 years. The new lamps were quite popular with the affected personnel, who gave the lighting an average score of 4.46 out of 5 for improvement.

  5. What Do You Think of Your LED Holiday Lights? | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    savings, but some folks have also discovered that the lights have a slightly different color or reflect off of ornaments in a different way. Change can be difficult, especially...

  6. Assessing the Performance of LED-Based Flashlights Available in the Kenyan Off-Grid Lighting Market

    SciTech Connect

    Tracy, Jennifer; Jacobson, Arne; Mills, Evan

    2010-03-02

    Low cost rechargeable flashlights that use LED technology are increasingly available in African markets. While LED technology holds promise to provide affordable, high quality lighting services, the widespread dissemination of low quality products may make it difficult to realize this potential. This study includes performance results for three brands of commonly available LED flashlights that were purchased in Kenya in 2009. The performance of the flashlights was evaluated by testing five units for each of the three brands. The tests included measurements of battery capacity, time required to charge the battery, maximum illuminance at one meter, operation time and lux-hours from a fully charged battery, light distribution, and color rendering. All flashlights tested performed well below the manufacturers? rated specifications; the measured battery capacity was 30-50percent lower than the rated capacity and the time required to fully charge the battery was 6-25percent greater than the rated time requirement. Our analysis further shows that within each brand there is considerable variability in each performance indicator. The five samples within a single brand varied from each other by as much as 22percent for battery capacity measurements, 3.6percent for the number of hours required for a full charge, 23percent for maximum initial lux, 38percent for run time, 11percent for light distribution and by as much as 200percent for color rendering. Results obtained are useful for creating a framework for quality assurance of off-grid LED products and will be valuable for informing consumers, distributors and product manufacturers about product performance.

  7. Self-reported Impacts of LED Lighting Technology Compared to Fuel-based Lighting on Night Market Business Prosperity in Kenya

    SciTech Connect

    Johnstone, Peter; Jacobson, Arne; Mills, Evan; Mumbi, Maina

    2009-02-11

    The notion of"productive use" is often invoked in discussions about whether new technologies improve productivity or otherwise enhance commerce in developing-country contexts. It an elusive concept,especially when quantitative measures are sought. Improved and more energy efficient illumination systems for off-gridapplication--the focus of the Lumina Project--provide a case in which a significant productivity benefit can be imagined, given the importance of light to the successful performance of many tasks, and the very low quality of baseline illumination provided by flame-based source. This Research Note summarizes self-reported quantitative and qualitative impacts of switching to LED lighting technology on the prosperity of night-market business owners and operators. The information was gathered in the context of our 2008 market testing field work in Kenya?s Rift Valley Province, which was performed in the towns of Maai Mahiu and Karagita by Arne Jacobson, Kristen Radecsky, Peter Johnstone, Maina Mumbi, and others. Maai Mahiu is a crossroads town; provision of services to travelers and freight carriers is a primary income source for the residents. In contrast, the primary income for Karagita's residents is from work in the large, factory style flower farms on the eastern shores of Lake Naivasha that specialize in producing cut flowers for export to the European market. According to residents, both towns had populations of 6,000 to 8,000 people in June 2008. We focused on quantifying the economics of fuel-based and LED lighting technology in the context of business use by night market vendors and shop keepers. Our research activities with the business owners and operators included baseline measurement of their fuel-based lighting use, an initial survey, offering for sale data logger equipped rechargeable LED lamps, monitoring the adoption of the LED lamps, and a follow-up survey.

  8. LED Color Characteristics

    SciTech Connect

    2012-01-01

    Color quality is an important consideration when evaluating LED-based products for general illumination. This fact sheet reviews the basics regarding light and color and summarizes the most important color issues related to white-light LED systems.

  9. LED Frequently Asked Questions

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Courtesy of Osram Opto Semiconductor. LED light sources used in a residential application. Terms SSL - solid-state lighting; umbrella term for semiconductors used to convert ...

  10. Establishing LED Equivalency

    SciTech Connect

    2011-10-01

    Solid-state lighting program technology fact sheet that provides guidance for comparing products based on LED or other light source technologies.

  11. LED Color Stability

    SciTech Connect

    2014-03-01

    DOE Solid-State Lighting program technology fact sheet that addresses key questions about color stability and color shift in LED lighting applications.

  12. General Service LED Lamps

    SciTech Connect

    2012-04-01

    Solid-state lighting program technology fact sheet that compares general service incandescent lamps—i.e., light bulbs—to LED and CFL alternatives.

  13. LED Color Characteristics

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Color Characteristics Color quality is an important consideration when evaluating lighting products. This fact sheet reviews the fundamentals regarding light and color, summarizing the most important color issues related to white-light LED systems, including color consistency, stability, tuning, and rendering, as well as chromaticity. LED Emission Attributes Individual LED dies, often referred to as chips, emit light in a narrow range of wavelengths, giving the appearance of a monochromatic

  14. Municipal Consortium Releases Updated Model Specification for Networked Outdoor Lighting Control Systems

    Office of Energy Efficiency and Renewable Energy (EERE)

    The U.S. Department of Energy's Municipal Solid-State Street Lighting Consortium (MSSLC) has released an update to its Model Specification for Adaptive Control and Remote Monitoring of LED Roadway...

  15. Top 8 Things You Didn't Know About LEDs | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    8 Things You Didn't Know About LEDs Top 8 Things You Didn't Know About LEDs June 4, 2013 - 9:20am Addthis Using funding from the Energy Department, Philips Lumileds developed the LUXEON S1000 -- a commercial LED product used in outdoor street and parking lot lighting. While small, this chip is the heart of the light and as of June 2012 was brighter than a 60-watt light bulb. | Photo courtesy of Philips Lumileds. Using funding from the Energy Department, Philips Lumileds developed the LUXEON

  16. LED MR16 Lamps

    SciTech Connect

    2012-07-01

    Solid-state lighting program technology fact sheet that describes the performance of LED MR16 lamps and discusses electronic compatibility concerns.

  17. Recessed LED Downlights

    SciTech Connect

    2012-05-01

    Solid-state lighting program technology fact sheet that briefly discusses different LED product types and their performance relative to downlights utilizing traditional lamps.

  18. General Service LED Lamps

    Energy.gov [DOE]

    A U.S. DOE SSL technology fact sheet that compares general service LED light bulbs with incandescent and CFL bulbs.

  19. Optical Safety of LEDs

    SciTech Connect

    none,

    2013-06-01

    Solid-state lighting program technology fact sheet that clarifies the issue of LED lighting safety for the human eye and takes a look at current standards for photobiological safety.

  20. LED Performance Under Tough Conditions

    Energy Saver

    Three DOE Gateway applications show how LED luminaires respond to rigorous outdoor environments By JAmes BroDrick A lthough LED lighting has already made impressive inroads in ...

  1. Text-Alternative Version: Maintenance Practices for LED Streetlights |

    Energy Saver

    Department of Energy Maintenance Practices for LED Streetlights Text-Alternative Version: Maintenance Practices for LED Streetlights Bruce Kinzey:So again, I want to welcome everyone to another MSSLC webinar. And we have a great one lined up today. At this point everyone is familiar with the fact that the solid-state street lighting is being installed by the thousands, hundreds of thousands in fact, around the country. I think everyone's also pretty familiar with the kinds of energy savings

  2. Recessed LED Downlights | Department of Energy

    Energy Saver

    Recessed LED Downlights Recessed LED Downlights A Dept of Energy Solid-State Lighting Program technology fact sheet on recessed LED downlights. PDF icon recesseddownlight.pdf More ...

  3. LED Frequently Asked Questions | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Frequently Asked Questions LED Frequently Asked Questions EERE Solid-State Lighting LED Factsheet PDF icon ledbasics.pdf More Documents & Publications LED Frequently Asked ...

  4. Demonstration Assessment of Light-Emitting Diode (LED) Retrofit Lamps at Intercontinental Hotel in San Francisco, CA

    SciTech Connect

    Miller, Naomi J.; Curry, Ku'Uipo J.

    2010-11-01

    This document is a report of observations and results obtained from a lighting demonstration project conducted under the U.S. Department of Energy (DOE) GATEWAY Demonstration Program. The program supports demonstrations of high-performance solid-state lighting (SSL) products in order to develop empirical data and experience with in-the-field applications of this advanced lighting technology. The DOE GATEWAY Demonstration Program focuses on providing a source of independent, third-party data for use in decision-making by lighting users and professionals; this data should be considered in combination with other information relevant to the particular site and application under examination. Each GATEWAY Demonstration compares SSL products against the incumbent technologies used in that location. Depending on available information and circumstances, the SSL product may also be compared to alternate lighting technologies. Though products demonstrated in the GATEWAY program have been prescreened and tested to verify their actual performance, DOE does not endorse any commercial product or in any way guarantee that users will achieve the same results through use of these products.

  5. Frequently Asked Questions About the Municipal Solid-State Street...

    Office of Environmental Management (EM)

    on the needs of participants making investments in SSL street and area lighting products. ... DOE is congressionally mandated by the Energy Policy Act of 2005 to accelerate SSL ...

  6. Report from the Street

    Energy Saver

    SHERMAN STREET, CAMBRIDGE, MA 02140 617.354.4502 LAMPARTNERS.COM BLOG.LAMPARTNERS.COM Report from the Street Glenn Heinmiller, FIALD, LC, LEED AP Principal, Lam Partners Chair,...

  7. Energy Efficiency of LEDs

    SciTech Connect

    2013-03-01

    Solid-state lighting program technology fact sheet on energy efficiency of LEDs, characterizing the current state of the market and discussing package efficacy, luminaire efficacy, and application efficacy.

  8. LED Directional Lamps

    SciTech Connect

    2012-11-01

    Solid-state lighting program technology fact sheet that provides an overview of the current performance of LED PAR-, BR-, R-, and AR-shaped lamps, which were all investigated by CALiPER in 2012.

  9. LED Frequently Asked Questions

    SciTech Connect

    2011-05-01

    Solid-state lighting program technology fact sheet that provides an overview of what retailers, energy efficiency advocates, and consumers need to know to make informed LED buying decisions.

  10. Crystal Chemistry and Luminescence of Ce3+ -Doped Lu2CaMg2(Si,Ge)3O12 and Its Use in LED Based Lighting

    SciTech Connect

    Setlur,A.; Heward, W.; Gao, Y.; Srivastava, A.; Chandron, R.; Shankar, M.

    2006-01-01

    In this paper, we describe the formation and luminescence of a new garnet phosphor for light emitting diode (LED) based lighting, Lu{sub 2}CaMg{sub 2}(Si,Ge){sub 3}O{sub 12}:Ce{sup 3+}.The regions for garnet phase formation are initially described with respect to larger rare earth substitution and show reasonable correlation to previous crystal chemistry studies for the garnet parent structure. While the pure silicate phosphor also has apatite second phases, a significant amount of Ce{sup 3+} enters the garnet phase, giving Ce{sup 3+} luminescence that is significantly redder when compared to typical Al{sup 3+} garnet phosphors with quantum efficiencies comparable to commercial Ce{sup 3+} garnet phosphors. Potential reasons for the emission red shift and the high quantum efficiency are discussed. Finally, the performance of these new phosphors is tested within LED based lamps. Lamps using these phosphors can reach color temperatures required for general illumination lighting and also have comparable phosphor conversion efficiencies when compared to lamps using typical garnet phosphors.

  11. Assessment of LED Technology in Ornamental Post-Top Luminaires (Host Site: Sacramento, CA)

    SciTech Connect

    Tuenge, Jason R.

    2011-12-01

    The DOE Municipal Solid-State Street Lighting Consortium has evaluated four different LED replacements for existing ornamental post-top street lights in Sacramento, California. The project team was composed of the City and its consultant, PNNL (representing the Consortium), and the Sacramento Municipal Utility District. Product selection was finalized in March 2011, yielding one complete luminaire replacement and three lamp-ballast retrofit kits. Computer simulations, field measurements, and laboratory testing were performed to compare the performance and cost-effectiveness of the LED products relative to the existing luminaire with 100 W high-pressure sodium lamp. After it was confirmed the LED products were not equivalent to HPS in terms of initial photopic illumination, the following parameters were scaled proportionally to enable equitable (albeit hypothetical) comparisons: light output, input wattage, and pricing. Four replacement scenarios were considered for each LED product, incorporating new IES guidance for mesopic multipliers and lumen maintenance extrapolation, but life cycle analysis indicated cost effectiveness was also unacceptable. Although LED efficacy and pricing continue to improve, this project serves as a timely and objective notice that LED technology may not be quite ready yet for such applications.

  12. 200 N. Spring Street

    Office of Legacy Management (LM)

    Riordon .', 200 N. Spring Street 'Los Angeles, California ,90012 ' Dear Mayor Riordon: " ... 'i' ,, : ,, ' . cci H., Coll.ins,'State.of California. ."' ' I. , ,I .. , '.

  13. Solid-State Lighting News | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Results of Public Street and Area Lighting Inventory Survey DOE's Municipal Solid-State Street Lighting Consortium (MSSLC) has released the results of a voluntary web-based...

  14. Upgrading Troffer Luminaires to LED

    SciTech Connect

    none,

    2014-01-31

    Solid-state lighting technology fact sheet providing guidance on the various factors to consider when deciding on an LED upgrade for a fluorescent troffer system.

  15. Using LEDs | Department of Energy

    Energy Saver

    compact profile, superior optical control, energy efficiency, breakage resistance, reduced maintenance, and long life-LEDs are well suited to a variety of lighting applications. ...

  16. LED Lighting | Department of Energy

    Energy Saver

    Design » Design for Efficiency » Cool Roofs Cool Roofs Learn how switching to a cool roof can save you money and benefit the environment. A cool roof is one that has been designed to reflect more sunlight and absorb less heat than a standard roof. Cool roofs can be made of a highly reflective type of paint, a sheet covering, or highly reflective tiles or shingles. Nearly any type of building can benefit from a cool roof, but consider the climate and other factors before deciding to install

  17. LED Lighting | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    output of 44 large electric power plants (1000 megawatts each), and a total ... to make sure the product is the right brightness and color for the intended location. ...

  18. LED ADOPTION REPORT | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Information Resources » Publications » Market Studies » LED ADOPTION REPORT LED ADOPTION REPORT LED ADOPTION REPORT The DOE report, Adoption of Light-Emitting Diodes in Common Lighting Applications, is the latest in a series analyzing markets where LEDs compete with traditional lighting sources. Report: Adoption of Light-Emitting Diodes in Common Lighting Applications Report Summary Full Infographic The new report reveals a wealth of insights into promising pathways for SSL technology

  19. LED North America - Energy Innovation Portal

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Resources » Publications » Market Studies » LED ADOPTION REPORT LED ADOPTION REPORT LED ADOPTION REPORT The DOE report, Adoption of Light-Emitting Diodes in Common Lighting Applications, is the latest in a series analyzing markets where LEDs compete with traditional lighting sources. Report: Adoption of Light-Emitting Diodes in Common Lighting Applications Report Summary Full Infographic The new report reveals a wealth of insights into promising pathways for SSL technology development,

  20. Marine Corps Base Quantico Achieves 85% Savings in Parking Lighting

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Marine Corps Base Quantico Achieves 85% Savings in Parking Lighting LED Parking Lighting in Federal Facilities FEDERAL ENERGY MANAGEMENT PROGRAM With technical assistance from the Federal Energy Management Program (FEMP), the Marine Corps Base Quantico (MCBQ) recently undertook a major overhaul of its outdoor lighting, boosting safety and security throughout the site, while cutting energy costs and earning a national award in the process. The MCBQ replaced nearly 2,000 old and ineffcient street

  1. It's 2015: Should All Your Sockets be Filled with LEDs?

    Energy Saver

    - mid-power LEDs on PCb used in 2x4 troffers 4 LED Modules and Light Engines GE Infusion Philips Fortimo Osram PrevaLED 5 LEDs: A New Light Source for Everything * Outdoor...

  2. LED MR16 Lamps | Department of Energy

    Energy Saver

    LED MR16 Lamps LED MR16 Lamps A U.S. DOE Solid-State Lighting Program technology fact sheet on LED MR16 lamps. PDF icon ledmr16-lamps.pdf More Documents & Publications Report ...

  3. LedEngin Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    LedEngin Inc Jump to: navigation, search Name: LedEngin, Inc Place: Santa Clara, California Zip: 95054 Product: Developer of Light Emitting Diode (LED) technology for medical and...

  4. Text-Alternative Version: MSSLC Member Case Studies - LED Street...

    Energy Saver

    ... energy saving programs like looking at fleet efficiencies for our vehicles and electric vehicle conversion or ... As you can see by the charts the kilowatt hours used by the ...

  5. New Rules Help Pocahontas Brighten Streets

    Office of Energy Efficiency and Renewable Energy (EERE)

    Officials of the City of Pocahontas, Iowa, thought replacing old streetlights with light-emitting diode (LED) lighting was a no-brainer. Tests revealed that the LEDs used just a quarter of the energy that the old high-pressure sodium lights used, and the city expected to save thousands by making the switch.

  6. LED Directional Lamps | Department of Energy

    Energy Saver

    Directional Lamps LED Directional Lamps BTP EERE Solid-State Lighting Program PDF icon leddirectionallamps.pdf More Documents & Publications Energy Savings Estimates of Light ...

  7. Demonstration Assessment of Light-Emitting Diode (LED) Retrofit Lamps at an Exhibit of 19th Century Photography at the Getty Museum

    SciTech Connect

    Miller, N. J.; Druzik, J. R.

    2012-03-01

    GATEWAY program report on a demonstration of LED retrofit lamps at the J. Paul Getty Museum in Malibu, CA.

  8. UNDERSTANDING LED COLOR-TUNABLE PRODUCTS | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    UNDERSTANDING LED COLOR-TUNABLE PRODUCTS UNDERSTANDING LED COLOR-TUNABLE PRODUCTS LED luminaires with the ability to deliver varying light color have been on the architectural ...

  9. LEDs Go Ivy League: Princeton's Dillon Gymnasium | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    View the video about LED lighting in Dillon Gymnasium, a focal point of sports and recreation at Princeton since 1947. William Evans discusses measurable benefits of LED lighting ...

  10. DOE Tour of Zero: The School Street Homes by StreetScape Development...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    the owners return home at night. 5 of 17 Advanced solid-state lighting technology uses LED lights for 90% of the fixtures. All of the lights are integrated into the home's smart...

  11. Use of Occupancy Sensors in LED Parking Lot and Garage Applications...

    Office of Scientific and Technical Information (OSTI)

    Experiences Kinzey, Bruce R.; Myer, Michael; Royer, Michael P.; Sullivan, Greg P. LED lighting; parking lot lighting; occupancy sensors LED lighting; parking lot lighting;...

  12. Vapochromic LED

    DOEpatents

    Kunugi, Yoshihito; Mann, Kent R.; Miller, Larry L.; Exstrom, Christopher L.

    2002-01-15

    A sandwich device was prepared by electrodeposition of an insoluble layer of oligomerized tris(4-(2-thienyl)phenyl)amine onto conducting indium-tin oxide coated glass, spin coating the stacked platinum compound, tetrakis(p-decylphenylisocyano)platinum tetranitroplatinate, from toluene onto the oligomer layer, and then coating the platinum complex with aluminum by vapor deposition. This device showed rectification of current and gave electroluminescence. The electroluminescence spectrum (.mu..sub.max =545 nm) corresponded to the photoluminescence spectrum of the platinum complex. Exposure of the device to acetone vapor caused the electroemission to shift to 575 nm. Exposure to toluene vapor caused a return to the original spectrum. These results demonstrate a new type of sensor that reports the arrival of organic vapors with an electroluminescent signal. The sensor comprises (a) a first electrode; (b) a hole transport layer formed on the first electrode; (c) a sensing/emitting layer formed on the hole transport layer, the sensing/emitting layer comprising a material that changes color upon exposure to the analyte vapors; (d) an electron conductor layer formed on the sensing layer; and (e) a second electrode formed on the electron conductor layer. The hole transport layer emits light at a shorter wavelength than the sensing/emitting layer and at least the first electrode comprises an optically transparent material.

  13. Vapochromic LED

    DOEpatents

    Kunugi, Yoshihito; Mann, Kent R.; Miller, Larry L.; Exstrom, Christopher L.

    2003-06-17

    A sandwich device was prepared by electrodeposition of an insoluble layer of oligomerized tris(4-(2-thienyl)phenyl)amine onto conducting indium-tin oxide coated glass, spin coating the stacked platinum compound, tetrakis(p-decylphenylisocyano)platinum tetranitroplatinate, from toluene onto the oligomer layer, and then coating the platinum complex with aluminum by vapor deposition. This device showed rectification of current and gave electroluminescence. The electroluminescence spectrum (.lambda..sub.max =545 nm) corresponded to the photoluminescence spectrum of the platinum complex. Exposure of the device to acetone vapor caused the electroemission to shift to 575 nm. Exposure to toluene vapor caused a return to the original spectrum. These results demonstrate a new type of sensor that reports the arrival of organic vapors with an electroluminescent signal. The sensor comprises (a) a first electrode; (b) a hole transport layer formed on the first electrode; (c) a sensing/emitting layer formed on the hole transport layer, the sensing/emitting layer comprising a material that changes color upon exposure to the analyte vapors; (d) an electron conductor layer formed on the sensing layer; and (e) a second electrode formed on the electron conductor layer. The hole transport layer emits light at a shorter wavelength than the sensing/emitting layer and at least the first electrode comprises an optically transparent material.

  14. LED Color Characteristics | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Color Characteristics LED Color Characteristics Reviews the fundamentals regarding light and color, summarizing the most important color issues related to white-light LED systems. (6 pages, April 2016) led-color-characteristics-factsheet.pdf (1.77 MB) More Documents & Publications Evaluating Color Rendition Using IES TM-30-15 LED Color Characteristics IES TM-30 Offers Comprehensive System for Evaluating Color Rendition of Light Sources

  15. LED Essentials - Technology, Applications, Advantages, Disadvantages |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Essentials - Technology, Applications, Advantages, Disadvantages LED Essentials - Technology, Applications, Advantages, Disadvantages On October 11, 2007, Kevin Dowling, VP of Innovation for Philips Solid-State Lighting Solutions, presented a broad introduction to LED technology, and discussed the technology status, advantages and disadvantages, current applications, future potential, and evolving path of LED technology from indicator lights to general illumination. View

  16. LED Color Characteristics | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Color Characteristics LED Color Characteristics DOE EERE Building Technologies Program Solid-State Lighting fact sheet led-color-characteristics-factsheet.pdf (804.38 KB) More Documents & Publications LED Color Characteristics Evaluating Color Rendition Using IES TM-30-15 Report 23: Photometric Testing of White Tunable LED Luminaires

  17. 701 Ninth Street, NW

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    01 Ninth Street, NW Washington, DC 20068 202 872-3057 William M. Gausman Vice President, Asset Management January 8, 2007 Mr. Anthony J. Como SEA Document Manager U.S. Department of Energy 1000 Independence Avenue, SW Washington, DC 20585 Re: Special Environmental Analysis For Actions Taken Under U.S. Department of Energy Emergency Orders Regarding Operation of the Potomac River Generating Station in Alexandria, Virginia Dear Mr. Como: Potomac Electric Power Company ("Pepco") has

  18. Using LEDs to Their Best Advantage

    SciTech Connect

    none,

    2012-01-01

    Solid-state lighting program technology fact sheet that explores the unique attributes of LEDs, which may make them the right choice for some applications.

  19. LED Replacements for Linear Fluorescent Lamps Webcast

    Energy.gov [DOE]

    In this June 20, 2011 webcast on LED products marketed as replacements for linear fluorescent lamps, Jason Tuenge of the Pacific Northwest National Laboratory (PNNL) discussed current Lighting...

  20. Lighting Controls | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    fluorescent lighting fixtures rather than replace them. Dimmers and LEDs Some light-emitting diode (LED) lightbulbs can be used with dimmers. LED bulbs and fixtures must be...

  1. LED Frequently Asked Questions | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Questions (May 2011) (344.41 KB) More Documents & Publications LED Frequently Asked Questions Lighting Designer Roundtable on Solid-State Lighting SSL R&D Multi-Year Program Plan

  2. LEDs Ready for Takeoff at Louisiana Airport

    Office of Energy Efficiency and Renewable Energy (EERE)

    About 250 lights along the busy taxiway at Hammond Northshore Regional Airport are being replaced with light-emitting diodes (LEDs) with funds from an Energy Efficiency and Conservation Block Grant (EECBG) from the U.S. Department of Energy.

  3. LED Luminaire Lifetime: Recommendations For Testing and Reporting...

    Energy Saver

    PDF icon LED Luminaire Lifetime: September 2014 More Documents & Publications System Reliability Model for Solid-State Lighting Luminaires LED LUMINAIRE LIFETIME: Recommendations ...

  4. Municipal Solid-State Street Lighting Consortium

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    "Successful City Initiatives with Energy Efficiency and Conservation Block Grant (EECBG) Funding," ... market share * MSSLC website statistics * All above metrics used for ...

  5. Street sweeping and stormwater regulations

    SciTech Connect

    Not Available

    1993-10-01

    This article examines the role of street sweeping in meeting the requirements of the Clean Water Act stormwater regulations. The article identifies those industrial and municipal activities which are covered by the regulations and cites frequent sweeping of site surfaces for industry and street sweeping for municipalities as an integral part of compliance plans.

  6. Eu{sup 2+}, Mn{sup 2+} co-doped Ba{sub 9}Y{sub 2}Si{sub 6}O{sub 24} phosphors based on near-UV-excitable LED lights

    SciTech Connect

    Kim, Yoejin; Park, Sangmoon

    2014-01-01

    Graphical abstract: - Highlights: • New near-ultraviolet (NUV)-excitable materials composed of Ba{sub 9}Eu{sub m}Mn{sub n}Y{sub 2}Si{sub 6}O{sub 24} (m = 0.01–0.5, n = 0–0.7) were prepared. • High energy-transfer from Eu{sup 2+} to Mn{sup 2+} and their energy-transfer mechanism were discussed. • The co-doping of Eu{sup 2+} and Mn{sup 2+} in the orthosilicate structure resulted in the emission of white light under NUV LED light. - Abstract: New single-phase and near-ultraviolet (NUV)-excitable materials composed of Ba{sub 9}Eu{sub m}Mn{sub n}Y{sub 2}Si{sub 6}O{sub 24} (m = 0.01–0.5, n = 0–0.7) were prepared via a solid-state reaction in reducing atmosphere. X-ray diffraction patterns of the obtained phosphors were examined to index the peak positions. After doping the host structure with Eu{sup 2+} and Mn{sup 2+} emitters, the intense green, white, and orange emission lights that were observed in the photoluminescence spectra under NUV excitation were monitored. The dependence of the luminescent intensity of the Mn{sup 2+} co-doped (n = 0.1–0.7) host lattices on the fixed Eu{sup 2+} content (m = 0.1, 0.3, 0.5) is also investigated. Co-doping Mn{sup 2+} into the Eu{sup 2+}-doped host structure enabled a high energy-transfer from Eu{sup 2+} to Mn{sup 2+} and their energy-transfer mechanism were discussed. Using these phosphors, the desired CIE values including emissions throughout the green to orange regions of the spectra were achieved. Efficient white-light light-emitting diodes (LEDs) were fabricated using Eu{sup 2+} and Mn{sup 2+} co-doped phosphors based on NUV-excitable LED lights.

  7. Multicolor, High Efficiency, Nanotextured LEDs

    SciTech Connect

    Jung Han; Arto Nurmikko

    2011-09-30

    We report on research results in this project which synergize advanced material science approaches with fundamental optical physics concepts pertaining to light-matter interaction, with the goal of solving seminal problems for the development of very high performance light emitting diodes (LEDs) in the blue and green for Solid State Lighting applications. Accomplishments in the duration of the contract period include (i) heteroepitaxy of nitrogen-polar LEDs on sapphire, (ii) heteroepitaxy of semipolar (11{bar 2}2) green LEDs on sapphire, (iii) synthesis of quantum-dot loaded nanoporous GaN that emits white light without phosphor conversion, (iv) demonstration of the highest quality semipolar (11{bar 2}2) GaN on sapphire using orientation-controlled epitaxy, (v) synthesis of nanoscale GaN and InGaN medium, and (vi) development of a novel liftoff process for manufacturing GaN thin-film vertical LEDs. The body of results is presented in this report shows how a solid foundation has been laid, with several noticeable accomplishments, for innovative research, consistent with the stated milestones.

  8. Cate Street Capital Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Cate Street Capital Inc Jump to: navigation, search Name: Cate Street Capital, Inc. Place: Portsmouth, New Hampshire Zip: 3801 Sector: Renewable Energy Product: New Hampshire-based...

  9. Pecan Street Project Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Project Inc Jump to: navigation, search Name: Pecan Street Project Inc Place: Austin, Texas Zip: 78759 Product: Austin-based smart grid, energy system developer. The Pecan Street...

  10. Challenges in LED Research and Development | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    LED Research and Development Challenges in LED Research and Development View the video about LED lighting technology, where it is headed, and the DOE's role in its continued R&D

  11. To Bridge LEDs' Green Gap, Scientists Think Small

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... This "direct" method isn't practical today because green LEDs are not as efficient as their blue and red counterparts. Instead, most white lighting today comes from blue LED light ...

  12. LEDs Go Ivy League: Princeton’s Dillon Gymnasium

    Office of Energy Efficiency and Renewable Energy (EERE)

    View the video about LED lighting in Dillon Gymnasium, a focal point of sports and recreation at Princeton since 1947. William Evans discusses measurable benefits of LED lighting in the gym and...

  13. Color Maintenance of LEDs in Laboratory and Field Applications...

    Office of Scientific and Technical Information (OSTI)

    Royer, Michael P.; Tuttle, Ralph; Rosenfeld, Scott M.; Miller, Naomi J. Light-emitting diode (LED), color shift, color stability, color maintenance, warranty Light-emitting...

  14. High Performance Green LEDs by Homoepitaxial

    SciTech Connect

    Wetzel, Christian; Schubert, E Fred

    2009-11-22

    This work's objective was the development of processes to double or triple the light output power from green and deep green (525 - 555 nm) AlGaInN light emitting diode (LED) dies within 3 years in reference to the Lumileds Luxeon II. The project paid particular effort to all aspects of the internal generation efficiency of light. LEDs in this spectral region show the highest potential for significant performance boosts and enable the realization of phosphor-free white LEDs comprised by red-green-blue LED modules. Such modules will perform at and outperform the efficacy target projections for white-light LED systems in the Department of Energy's accelerated roadmap of the SSL initiative.

  15. Dual LED/incandescent security fixture

    DOEpatents

    Gauna, Kevin Wayne

    2005-06-21

    A dual LED and incandescent security lighting system uses a hybrid approach to LED illumination. It combines an ambient LED illuminator with a standard incandescent lamp on a motion control sensor. The LED illuminator will activate with the onset of darkness (daylight control) and typically remain on during the course of the night ("always on"). The LED illumination, typically amber, is sufficient to provide low to moderate level lighting coverage to the wall and ground area adjacent to and under the fixture. The incandescent lamp is integrated with a motion control circuit and sensor. When movement in the field of view is detected (after darkness), the incandescent lamp is switched on, providing an increased level of illumination to the area. Instead of an "always on" LED illuminator, the LEDs may also be switched off when the incandescent lamp is switched on.

  16. LED Tour Handout | Department of Energy

    Energy Saver

    LED T8 Replacement Lamps LED T8 Replacement Lamps This documents provides an overview of LED T8 replacement lamps and helps define a reasonable minimum performance level for the purpose of plant-wide improvement. LED T8 Replacement Lamps (April 2010) (809.84 KB) More Documents & Publications Emerging Lighting Technology Guiding Market Introduction of High-Performance SSL Products DOE Booth Presentations From Grainger Show 2015 Downloads

    Tour Handout LED Tour Handout DOE SSL R&D

  17. Biomedical devices from ultraviolet LEDs

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Biomedical devices from ultraviolet LEDs Light-emitting nanocrystal diodes go ultraviolet Biomedical devices with active components could be made from nanostructured systems. February 24, 2012 Researcher working with nanocrystals A researcher at LANL works with nanocrystals. Get Expertise Researcher Sergio Brovelli Physical Chem & Applied Spectroscopy Email Research Team Leader Alberto Paleari University of Milano-Bicocca in Italy Such devices could, for example, selectively activate

  18. LED R&D Challenges | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Understanding SSL » LED R&D Challenges LED R&D Challenges Like any new technology, LED lighting must demonstrate a compelling value to buyers before it begins to win sizeable market share from the incumbent technologies it will replace. Over the past decade, research and development have yielded impressive improvements in the cost, color performance, light output, efficacy, reliability, lifetime, and manufacturability of LED products. Looking at LED packages specifically, the cost in

  19. Using QECBs for Street Lighting Upgrades: Lighting the Way to...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    the Internal Revenue Service Qualified Energy Conservation Bonds Using Qualified Energy Conservation Bonds for Public Building Upgrades: Reducing Energy Bills in the City of...

  20. SunLed Technologies | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Product: Hyderabad-based end-to-end energy efficient lighting solution provider and ESCO focused on LEDs and solar power. Coordinates: 17.6726, 77.5971 Show Map Loading...

  1. LED Efficacy: What America Stands to Gain

    Energy Saver

    ... With more effcacious LEDs, manufacturers and 2 The 230-plus solid-state lighting R&D projects DOE has funded since 2000 have resulted in more than 245 patents applied for or ...

  2. light-emitting diode

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... Cost The high-brightness, rapidly pulsed, multicolor light-emitting diode (LED) driver delivers lighting performance that exceeds that of conventional (laserarc-light) sources ...

  3. LED Lighting Facts | Department of Energy

    Energy Saver

    programs, the program provides information essential to evaluating SSL products. ... to develop an advanced luminaire reliability model for SSL manufacturers and end users. ...

  4. Demonstration Assessment of LED Roadway Lighting: Philadelphia...

    Office of Scientific and Technical Information (OSTI)

    Close Cite: Bibtex Format Close 0 pages in this document matching the terms "" Search For Terms: Enter terms in the toolbar above to search the full text of this document for ...

  5. Demonstration Assessment of LED Freezer Case Lighting

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... Measurements were taken with a Photo Research Luminance ... The resolution of the loggers was set to a reading level of ... energy road mapping provided by the IES handbook 3 . ...

  6. LED Efficacy: What America Stands to Gain

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Efficacy: What America Stands to Gain Impressive gains in the effcacy of LED (light-emitting diode) lighting technology have been realized in the past decade, as evidenced by the high-performing products now gaining share in growing numbers of lighting market niches. Research and development investments made through the U.S. Department of Energy (DOE) Solid-State Lighting Program, in partnership with industry and academia, are widely credited with spurring the technology advances underlying this

  7. Solving the 'Green Gap' in LED Technology

    Energy.gov [DOE]

    One long-standing high-priority research area for DOE is to increase the efficiency of deep green LEDs. Although most products today use phosphor conversion (PC) to produce white light from a blue LED, having a good green source could lead to color-mixed white sources that would avoid the losses associated with the PC approach.

  8. Pedestrian Friendly Outdoor Lighting

    SciTech Connect

    Miller, N. J.; Koltai, R. N.; McGowan, T. K.

    2013-12-01

    The GATEWAY program followed two pedestrian-scale lighting projects that required multiple mockups – one at Stanford University in California and the other at Chautauqua Institution in upstate New York. The report provides insight into pedestrian lighting criteria, how they differ from street and area lighting criteria, and how solid-state lighting can be better applied in pedestrian applications.

  9. LED Color Characteristics

    Energy.gov [DOE] (indexed site)

    a combina- tion of colored LEDs typically red, green, and blue (RGB) are also available. ... triphosphor uorescent, utilize a combination of red-, blue-, and green-emitting phosphors. ...

  10. Demonstration Assessment of Light-Emitting Diode Roadway Lighting on the FDR Drive in New York, New York

    SciTech Connect

    Myer, Michael; Hazra, Oindrila; Kinzey, Bruce R.

    2011-12-01

    This a report about a field study of light-emitting diodes street lights by four different manufacturers installed on the FDR Drive in New York City, NY.

  11. CALiPER Snapshot Report: Indoor LED Luminaires

    SciTech Connect

    2014-04-01

    Snapshot reports use data from DOE's LED Lighting Facts product list to compare the LED performance to standard technologies, and are designed to help lighting retailers, distributors, designers, utilities, energy efficiency program sponsors, and other stakeholders understand the current state of the LED market and its trajectory.

  12. Manhattan Project: Los Alamos Street Scene

    Office of Scientific and Technical Information (OSTI)

    LOS ALAMOS STREET SCENE Los Alamos (The Town) Resources > Photo Gallery Los Alamos street scene. Fuller Lodge and the "Big House" are visible in the distance (see below). Above is ...

  13. LEd:JCD

    Office of Legacy Management (LM)

    LEd:JCD TO- 54 k-sour R3scsrck Fouadatlon 0f..&+0istlstituta of TecGJlow Tecmolocy Csilter 10 Zest 35th Stmet ', cxk3go lo, I3.Umie Atteqtion: MC. R. c. Barrall Gentlemen: ...

  14. Text-Alternative Version: Challenges in LED Research and Development

    Energy.gov [DOE]

    Narrator: LEDs have made remarkable progress in the past decade and gained a strong foothold in the US marketplace. In 2012, LED lighting saved an estimated 71 trillion BTUs, equivalent to annual...

  15. Reading Municipal Light Department - Business Lighting Rebate...

    Energy.gov [DOE] (indexed site)

    with Electronic Ballasts: 100fixture De-lamping: 4 - 9lamp Lighting Sensors: 20sensor LED Exit Signs: 20fixture Summary Reading Municipal Light Department (RMLD) offers...

  16. 2015 Wall Street Perspectives on SMRs Update | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    5 Wall Street Perspectives on SMRs Update 2015 Wall Street Perspectives on SMRs Update Summary briefing on the results of a September 2015 survey of Wall Street attitudes toward SMRs. 2015 Financial Survey: Nuclear Energy (415.36 KB) More Documents & Publications 2014 Wall Street Perspective on SMRs 2014 Wall Street Perspectives on SMRs - Report 2013 Wall Street Perspective on SMRs

  17. Study: Environmental Benefits of LEDs Greater Than CFLs | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy Study: Environmental Benefits of LEDs Greater Than CFLs Study: Environmental Benefits of LEDs Greater Than CFLs December 9, 2013 - 4:13pm Addthis A three-part Energy Department-funded study indicates LEDs are more environmentally friendly than compact fluorescent and incandescent lights. | Energy Department graphic A three-part Energy Department-funded study indicates LEDs are more environmentally friendly than compact fluorescent and incandescent lights. | Energy Department graphic

  18. Supercomputers Help Identify Efficiency-Limiting Defects in LEDs

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Supercomputers Help Identify Efficiency-Limiting Defects in LEDs Supercomputers Help Identify Efficiency-Limiting Defects in LEDs July 18, 2016 Contact: Kathy Kincade, kkincade@lbl.gov, +1 510 495 2124 ChrisVanDerWalle PressReleaseImage A conceptual illustration of how defects in a crystal lattice might contribute to nonradiative recombination of electrons and holes in LEDs. Image: Peter Allen Light-emitting diodes (LEDs) have found firm footing in the lighting industry, not just for blue and

  19. Next-Generation LED Package Architectures Enabled by Thermally...

    Energy.gov [DOE] (indexed site)

    DOE Technology Manager: Jim Brodrick Lead Performer: Momentive More Documents & Publications Next-Generation "Giant" Quantum Dots: Performance-Engineered for Lighting LED ...

  20. High Impact Technology HQ - Results - LED Troffer, Cove (linear...

    Energy Saver

    Icahn Laboratory More Documents & Publications DOE Booth Presentations From Grainger Show 2015 Downloads Exterior LED Lighting Projects at Princeton University Snapshot: Downlights

  1. LED LUMINAIRE LIFETIME: Recommendations for Testing and Reporting...

    Energy Saver

    More Documents & Publications System Reliability Model for Solid-State Lighting Luminaires LED Luminaire Lifetime: Recommendations For Testing and Reporting System Reliability ...

  2. Purchasing Energy-Efficient Commercial and Industrial LED Luminaires

    Energy.gov [DOE]

    The Federal Energy Management Program (FEMP) provides acquisition guidance for commercial and industrial light emitting diode (LED) luminaires, a product category covered by FEMP efficiency...

  3. LEDs Go Ivy League: Princeton University and DOE GATEWAY Demonstrations

    Office of Energy Efficiency and Renewable Energy (EERE)

    View the video about LED lighting at Princeton University, which has dramatically reduced energy costs in a number of installations around campus. William Evans, electrical engineer, describes the...

  4. LED MR16 Lamps

    Office of Energy Efficiency and Renewable Energy (EERE)

    The following CALiPER report provides detailed analysis of LED MR16 lamp performance, covering basic performance characteristics as well as subjective evaluation of beam, shadow, and color quality. Pending reports will offer analysis on performance attributes that are not captured by LM-79 testing. These reports are intended to educate the industry on market trends, potential issues, and important areas for improvement.

  5. EECBG Success Story: LEDs Ready for Takeoff at Louisiana Airport

    Energy.gov [DOE]

    About 250 lights along the taxiway at Hammond Northshore Regional Airport in Louisiana are being replaced with light-emitting diodes (LEDs) with funds from an Energy Efficiency and Conservation Block Grant (EECBG). Learn more.

  6. 2014 Wall Street Perspectives on SMRs - Report | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    4 Wall Street Perspectives on SMRs - Report 2014 Wall Street Perspectives on SMRs - Report Summary of the results of a 2014 survey of Wall Street attitudes toward small modular reactors. View from Wall Street: Nuclear Energy and Small Modular Reactors (284.42 KB) More Documents & Publications 2013 Wall Street Perspective on SMRs 2014 Wall Street Perspective on SMRs 2015 Wall Street Perspectives on SMRs Update

  7. Expandable LED array interconnect

    DOEpatents

    Yuan, Thomas Cheng-Hsin; Keller, Bernd

    2011-03-01

    A light emitting device that can function as an array element in an expandable array of such devices. The light emitting device comprises a substrate that has a top surface and a plurality of edges. Input and output terminals are mounted to the top surface of the substrate. Both terminals comprise a plurality of contact pads disposed proximate to the edges of the substrate, allowing for easy access to both terminals from multiple edges of the substrate. A lighting element is mounted to the top surface of the substrate. The lighting element is connected between the input and output terminals. The contact pads provide multiple access points to the terminals which allow for greater flexibility in design when the devices are used as array elements in an expandable array.

  8. California Street Biomass Facility | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    2006 Database Retrieved from "http:en.openei.orgwindex.php?titleCaliforniaStreetBiomassFacility&oldid397263" Feedback Contact needs updating Image needs updating...

  9. America Saves! Energizing Main Street Small Businesses

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energizing Main Street Small Businesses 2014 Building Technologies Office Peer Review Mark Huppert mhuppert@savingplaces.org Ric Cochrane rcochrane@savingplaces.org National ...

  10. Solid state lighting component

    DOEpatents

    Yuan, Thomas; Keller, Bernd; Ibbetson, James; Tarsa, Eric; Negley, Gerald

    2010-10-26

    An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.

  11. Solid state lighting component

    DOEpatents

    Keller, Bernd; Ibbetson, James; Tarsa, Eric; Negley, Gerald; Yuan, Thomas

    2012-07-10

    An LED component comprising an array of LED chips mounted on a planar surface of a submount with the LED chips capable of emitting light in response to an electrical signal. The LED chips comprise respective groups emitting at different colors of light, with each of the groups interconnected in a series circuit. A lens is included over the LED chips. Other embodiments can comprise thermal spreading structures included integral to the submount and arranged to dissipate heat from the LED chips.

  12. Flooded First Street at Y-12 Plant | Y-12 National Security Complex

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Flooded First Street at ... Flooded First Street at Y-12 Plant Vehicles negotiate flooded First Street at Y-12 Plant

  13. LEDS | OpenEI Community

    OpenEI (Open Energy Information) [EERE & EIA]

    LEDS Home Graham7781's picture Submitted by Graham7781(2017) Super contributor 16 November, 2012 - 11:23 LEDS the focus of Monday's 10 a.m. Town Hall Meeting LEDS Town Hall meeting...

  14. LED Basics | Department of Energy

    Office of Environmental Management (EM)

    Understanding SSL LED Basics LED Basics Unlike incandescent lamps, LEDs are not ... Learn more about cost-effectiveness trends in the latest SSL R&D Plan. Resources R&D Plan ...

  15. National Lighting Energy Consumption

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Lighting Energy National Lighting Energy Consumption Consumption 390 Billion kWh used for lighting in all 390 Billion kWh used for lighting in all commercial buildings in commercial buildings in 2001 2001 LED (<.1% ) Incandescent 40% HID 22% Fluorescent 38% Lighting Energy Consumption by Lighting Energy Consumption by Breakdown of Lighting Energy Breakdown of Lighting Energy Major Sector and Light Source Type Major Sector and Light Source Type Source: Navigant Consulting, Inc., U.S. Lighting

  16. Reducing LED Costs Through Innovation | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Reducing LED Costs Through Innovation Reducing LED Costs Through Innovation November 27, 2013 - 12:00am Addthis Jim Brodrick, Lighting Program Manager A Wisconsin-based company is developing an innovative way to reduce manufacturing costs of light-emitting diodes (LEDs). With help from a $2.4 million Energy Department research grant that is matched dollar-for-dollar by the company, researchers at Eaton Corporation in Menomonee Falls, Wisconsin, are creating a manufacturing process that not only

  17. LED T8 Replacement Lamps | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    LED T8 Replacement Lamps LED T8 Replacement Lamps This documents provides an overview of LED T8 replacement lamps and helps define a reasonable minimum performance level for the purpose of plant-wide improvement. LED T8 Replacement Lamps (April 2010) (809.84 KB) More Documents & Publications Emerging Lighting Technology Guiding Market Introduction of High-Performance SSL Products DOE Booth Presentations From Grainger Show 2015 Downloads

  18. High Speed, High Current Pulsed LED Driver - Energy Innovation Portal

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Energy Analysis Energy Analysis Find More Like This Return to Search High Speed, High Current Pulsed LED Driver Sandia National Laboratories Contact SNL About This Technology Publications: PDF Document Publication Market Sheet (386 KB) Technology Marketing Summary Sandia's LED Pulser drives high-power LEDs to generate light pulses with shorter duration, higher repetition frequency, and higher intensity than is possible with commercially available LED drivers. This technology utilizes specially

  19. DOE Tour of Zero Floorplans: Taylor Street by Greenhill Contracting |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy Taylor Street by Greenhill Contracting DOE Tour of Zero Floorplans: Taylor Street by Greenhill Contracting DOE Tour of Zero Floorplans: Taylor Street by Greenhill Contracting

  20. 2013 Wall Street Perspective on SMRs | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Wall Street Perspective on SMRs 2013 Wall Street Perspective on SMRs Summary of results of a 2013 survey on Wall Street attitudes toward small modular reactors. PDF icon 2013 Wall ...

  1. 100 LPW 800 Lm Warm White LED

    SciTech Connect

    Sun, Decai

    2010-10-31

    An illumination grade warm white (WW) LED, having correlated color temperature (CCT) between 2800 K and 3500K and capable of producing 800 lm output at 100 lm/W, has been developed in this program. The high power WW LED is an ideal source for use as replacement for incandescent, and Halogen reflector and general purpose lamps of similar lumen value. Over the two year period, we have made following accomplishments: developed a high power warm white LED product and made over 50% improvements in light output and efficacy. The new high power WW LED product is a die on ceramic surface mountable LED package. It has four 1x1 mm{sup 2} InGaN pump dice flip chip attached to a ceramic submount in 2x2 array, covered by warm white phosphor ceramic platelets called Lumiramica and an overmolded silicone lens encapsulating the LED array. The performance goal was achieved through breakthroughs in following key areas: (1) High efficiency pump LED development through pump LED active region design and epi growth quality improvement (funded by internal programs). (2) Increase in injection efficiency (IE) represented by reduction in forward voltage (V{sub f}) through the improvement of the silver-based p-contact and a reduction in spreading resistance. The injection efficiency was increased from 80% at the start of the program to 96% at the end of the program at 700 mA/mm{sup 2}. (3) Improvement in thermal design as represented by reduction in thermal resistance from junction to case, through improvement of the die to submount connection in the thin film flip chip (TFFC) LED and choosing the submount material of high thermal conductivity. A thermal resistance of 1.72 K/W was demonstrated for the high power LED package. (4) Improvement in extraction efficiency from the LED package through improvement of InGaN die level and package level optical extraction efficiency improvement. (5) Improvement in phosphor system efficiency by improving the lumen equivalent (LE) and phosphor package

  2. Sandia-Developed LED Pulser Delivers Laser-Like Performance at...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Energy Frontier Research Centers: Solid-State Lighting Science Center for Frontiers of ... diode (LED) driver delivers lighting performance that exceeds that of ...

  3. In the OSTI Collections: LEDs | OSTI, US Dept of Energy Office...

    Office of Scientific and Technical Information (OSTI)

    even counterproductive, a hot light source can be quite ... roughness for light extraction and methods of ... patent "Integrated LED-based luminare for general ...

  4. DOE - Office of Legacy Management -- GSA 39th Street Warehouse...

    Office of Legacy Management (LM)

    GSA 39th Street Warehouse - IL 02 FUSRAP Considered Sites Site: GSA 39TH STREET WAREHOUSE (IL.02 ) Eliminated from consideration under FUSRAP Designated Name: Not Designated ...

  5. Solar Resource Measurements in 1400 JR Lynch Street, Jackson...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Solar Resource Measurements in 1400 JR Lynch Street, Jackson, Mississippi Cooperative ... CRADA Number: CRD-07-254 CRADA Title: Solar Resource Measurements in 1400 JR Lynch Street, ...

  6. 2014 Wall Street Perspectives on SMRs - Report | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Perspectives on SMRs - Report 2014 Wall Street Perspectives on SMRs - Report Summary of the results of a 2014 survey of Wall Street attitudes toward small modular reactors. PDF ...

  7. CALiPER Benchmark Report: Performance of Halogen Incandescent MR16 Lamps and LED Replacement

    SciTech Connect

    Paget, M. L.; Lingard, R. D.; Myer, M. A.

    2008-11-01

    This benchmark report addresses the halogen MR16 lamp and its commercially available light-emitting diode (LED) replacements.

  8. DOE Publishes GATEWAY Report on Pedestrian Friendly Outdoor Lighting

    Energy.gov [DOE]

    The U.S. Department of Energy (DOE) has published a new GATEWAY report entitled Pedestrian Friendly Outdoor Lighting. Recognizing that pedestrian lighting has different criteria for success than street and area lighting, GATEWAY followed t

  9. EECBG Success Story: Lighting Retrofit Improving Visibility,...

    Energy.gov [DOE] (indexed site)

    New LED lighting fixtures (right) emit a whiter light than existing high-pressure sodium ... New LED lighting fixtures (right) emit a whiter light than existing high-pressure sodium ...

  10. Solid-State Lighting-Lighting Facts | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Lighting Facts Solid-State Lighting-Lighting Facts Presenter: Marc Ledbetter, Pacific Northwest National Laboratory The LED Lighting Facts program provides credible, verified performance information about light-emitting diode (LED) lighting products to retailers, utilities, specifiers, energy efficiency program sponsors, and lighting users. The goal is to enable widespread market adoption of energy-efficient LED products by removing the lack-of-information market barrier. For the solid-state

  11. Cree Sets New Benchmarks for LED Efficacy and Brightness

    Energy.gov [DOE]

    Cree has successfully created a cool white LED prototype that delivers 107 lm/W at 350mA. This achievement builds on the Cree EZBright® LED chip platform, developed in part with prior funding support from DOE. Cree made the prototype LED under their DOE project focused on developing LED chips incorporating photonic crystal elements for improved light extraction and novel package technology for higher down-conversion efficiency compared to conventional LEDs. Based on a 1 millimeter-square chip, the new prototype LED produces white light with a CCT of 5500K and a CRI of 73. Integration of four of these prototype LEDs can produce luminous flux of more than 450 lumens.

  12. One West Third Street Tulsa, Oklahoma

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Third Street Tulsa, Oklahoma 74103-3502 918-595-6600 Fax 918-595-6656 www.swpa.gov The ... Director, Division of Information Technology (CIO) Tulsa, Oklahoma Special thanks to: Ron ...

  13. Text-Alternative Version: CALiPER Series 21 on LED Linear Lamps and Troffer

    Energy Saver

    Lighting | Department of Energy Information Resources » Videos » Text-Alternative Version: CALiPER Series 21 on LED Linear Lamps and Troffer Lighting Text-Alternative Version: CALiPER Series 21 on LED Linear Lamps and Troffer Lighting Following is a text version of a video about CALiPER Application Report Series 21 on LED Linear Lamps and Troffer Lighting. Tracy Beeson, Lighting Engineer, Pacific Northwest National Laboratory: Fluorescent troffers are widely used in office spaces, meeting

  14. Employee-Led Safety Committees

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Employee-Led Safety Committees Presented to: 25 th National VPPPA Conference August 26, 2009 San Antonio, Texas Presented by: Jack Griffith HNF-421781 CHPRC0907-38 2 Employee-Led ...

  15. LED Performance Under Tough Conditions

    Energy.gov [DOE]

    December 2015 LD+A magazine article entitled "LED Performance Under Tough Conditions" discussing three Dept of Energy GATEWAY applications that show how LED luminaires respond to rigorous outdoor environments.

  16. Text-alternative Version: A Tour Of The Portland 911 Federal Building Led

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Connected Lighting Installation | Department of Energy Text-alternative Version: A Tour Of The Portland 911 Federal Building Led Connected Lighting Installation Text-alternative Version: A Tour Of The Portland 911 Federal Building Led Connected Lighting Installation So you'll see where some lights are on, and that's because we have emergency lighting, or egress lighting. So we leave a certain number of lights on, even though, technically because of occupancy sensing, you don't necessarily

  17. Phosphors for LED lamps

    DOEpatents

    Murphy, James Edward; Manepalli, Satya Kishore; Kumar, Prasanth Nammalwar

    2013-08-13

    A phosphor, a phosphor blend including the phosphor, a phosphor prepared by a process, and a lighting apparatus including the phosphor blend are disclosed. The phosphor has the formula (Ca.sub.1-p-qCe.sub.pK.sub.q).sub.xSc.sub.y(Si.sub.1-rGa.sub.r).sub.zO.su- b.12+.delta. or derived from a process followed using disclosed amounts of reactants. In the formula, (0

  18. LED Chips and Packaging for 120 LPW SSL Component

    SciTech Connect

    Ibbetson, James

    2009-12-28

    Cree has developed a new, high-efficiency, low-cost, light emitting diode (LED) lamp module that should be capable of replacing standard, halogen, fluorescent and metal halide lamps based on the total cost of ownership. White LEDs are produced by combining one or more saturated color LEDs with a phosphor or other light down-converting media to achieve white broad-band illumination. This two year project addressed LED chip and package efficiency improvements to establish a technology platform suitable for low-cost, high-efficiency commercial luminaires. Novel photonic-crystal LEDs were developed to improve the light extraction efficiency of blue GaN-based LEDs compared to the baseline technology. Improved packaging designs that reduced down-conversion and absorption related light losses, led to a higher overall LED efficiency. Specifically, blue LEDs were demonstrated with light output nearing 600 mW and an external quantum efficiency greater than 60 percent (using 1 mm2 chips at an operating current of 350 mA). The results were achieved using a novel, production capable photonic-crystal LED fabrication process. These LEDs formed the basis for a multi-chip white lamp module prototype, which provided 510 lumens light output at a correlated color temperature (CCT) of 3875 K and an operating current of 350 mA per 1mm2 chip. The overall conversion efficiency at 4100 K improved to ~ 65%. The resulting efficacy is 112 lumens per watt (LPW) a 33% improvement over the start of the project. In addition, a proof-of-concept luminaire was demonstrated that provided a flux of 1700 lumens at a 3842 K CCT.

  19. To Bridge LEDs' Green Gap, Scientists Think Small

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    To Bridge LEDs' Green Gap, Scientists Think Small To Bridge LEDs' Green Gap, Scientists Think Small Nanostructures Half a DNA Strand-Wide Show Promise for Efficient LEDs April 4, 2014 Contact: Margie Wylie, mwylie@lbl.gov, +1 510 486 7421 Nanostructures half the breadth of a DNA strand could improve the efficiency of light emitting diodes (LEDs), especially in the "green gap," a portion of the spectrum where LED efficiency plunges, simulations at the U.S. Department of Energy's

  20. LED Roundtable Reports | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    LED Roundtable Reports LED Roundtable Reports PDF icon 2015 LED Core Technology Roundtable Report.pdf PDF icon 2015 LED Product Development and Manufacturing Roundtable Report.pdf ...

  1. LED Green Power Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    LED Green Power Inc Jump to: navigation, search Name: LED Green Power Inc Place: Santa Cruz, California Zip: 95060 Product: LED fixture and cartridge manufacturer. References: LED...

  2. TRUE COLORS: LEDS AND THE RELATIONSHIP BETWEEN CCT, CRI, OPTICAL SAFETY, MATERIAL DEGRADATION, AND PHOTOBIOLOGICAL STIMULATION

    SciTech Connect

    Royer, Michael P.

    2014-08-30

    This document analyzes the optical, material, and photobiological hazards of LED light sources compared to conventional light sources. It documents that LEDs generally produce the same amount of blue light, which is the primary contributor to the risks, as other sources at the same CCT. Duv may have some effect on the amount of blue light, but CRI does not.

  3. Model Specification for LED Roadway Luminaires, V2.0 | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Model Specification for LED Roadway Luminaires, V2.0 Model Specification for LED Roadway Luminaires, V2.0 Version 2.0 of the Model Specification for LED Roadway Luminaires is now available. Changes are substantial and include streamlined structure and formatting, new diagrams, updated references, and leveraging of LED Lighting Facts® program guidance. Model Specification for LED Roadway Luminaires, V2.0 (308.1 KB) More Documents & Publications CONNECTED LIGHTING SYSTEMS RESOURCES SALC 2014

  4. Text-Alternative Version: Better than CFL? Dimmable LED Downlights...

    Energy Saver

    ... more efficient lighting solutions, and then I'll give you the big picture of the Hilton. ... The DOE did visit the site earlier in 2014 and collected some data on the LED downlights. ...

  5. Laboratory Evaluation of LED T8 Replacement Lamp Products

    SciTech Connect

    Richman, Eric E.; Kinzey, Bruce R.; Miller, Naomi J.

    2011-05-23

    A report on a lab setting analysis involving LED lamps intended to directly replace T8 fluorescent lamps (4') showing light output, power, and economic comparisons with other fluorescent options.

  6. White LED with High Package Extraction Efficiency (Technical...

    Office of Scientific and Technical Information (OSTI)

    Visit OSTI to utilize additional information resources in energy science and technology. A ... the blue light from the LED die and converts it into a broad green-yellow emission. ...

  7. Parking Savings Through LED Project for Iowa City | Department...

    Energy.gov [DOE] (indexed site)

    grant and rebate from utility. City to save 66,000 annually with energy efficient LED lights in parking garages. Project will reduce energy usage by 1.4 million kWh...

  8. DOE Publishes GATEWAY Report on Successful LED Wall Washer Retrofit |

    Energy Saver

    Department of Energy Successful LED Wall Washer Retrofit DOE Publishes GATEWAY Report on Successful LED Wall Washer Retrofit August 5, 2015 - 1:00pm Addthis The U.S. Department of Energy has released a report on a GATEWAY demonstration, in which maintenance and energy costs were significantly reduced while retaining the quality of light when LED modules replaced 87 halogen lamps in existing wall washers at the University of Maryland's (UMD) Clarice Smith Performing Arts Center. The project

  9. Reducing LED Costs Through Innovation | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    LED Costs Through Innovation Reducing LED Costs Through Innovation November 19, 2013 - 3:49pm Addthis A combination solid-state laser turret cutter and stamping machine cuts a thin steel plate that will be formed into lighting fixture housing. Wisconsin-based Eaton Corporation is developing a new manufacturing process that streamlines LED fixture designs. | Photo courtesy of Eaton Corporation A combination solid-state laser turret cutter and stamping machine cuts a thin steel plate that will be

  10. Text-Alternative Version: Successful Selection of LED Streetlight

    Energy Saver

    Luminaires Webcast | Department of Energy Successful Selection of LED Streetlight Luminaires Webcast Text-Alternative Version: Successful Selection of LED Streetlight Luminaires Webcast Below is the text-alternative version of the "Successful Selection of LED Streetlight Luminaires" webcast, held March 6, 2013. Edward Smalley: Hello and welcome ladies and gentlemen. I'm Edward Smalley with Seattle City Light, Seattle's publically owned utility. As director of the Municipal

  11. Successful Selection of LED Streetlight Luminaires: Optimizing Illumination

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    and Economic Performance | Department of Energy Webcasts » Successful Selection of LED Streetlight Luminaires: Optimizing Illumination and Economic Performance Successful Selection of LED Streetlight Luminaires: Optimizing Illumination and Economic Performance This March 6, 2013 webcast reviewed the factors involved in successful selection of LED streetlight luminaires. Presenters Eric Haugaard of Cree Lighting and Chad Stalker of Philips Lumileds guided participants through the modeling of

  12. Better than CFL? Dimmable LED Downlights in Hospitality Facilities Webinar

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    | Department of Energy Webcasts » Better than CFL? Dimmable LED Downlights in Hospitality Facilities Webinar Better than CFL? Dimmable LED Downlights in Hospitality Facilities Webinar LEDs represent less than 1% of the installed base of U.S. downlights, which in 2012 numbered about 700 million. In hospitality facilities, past efforts to reduce lighting energy use have mainly involved switching to CFLs, which offer reduced energy consumption, higher efficacy, and much longer lifetimes than

  13. Advanced Lighting Systems | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Minnesota Zip: 56378 Product: Advanced Lighting Systems (ALS) provides a number of LED and fiber optic lighting solutions. It was acquired by Nexxus Lighting in September...

  14. Silescent Lighting Corp | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Lighting Corp Place: Fort Lauderdale, Florida Zip: 33315 Product: Florida-based LED lighting fixtures maker. References: Silescent Lighting Corp1 This article is a stub....

  15. Philips Lumileds Lighting Co | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    of high-power LEDs and solid-state lighting solutions for automotive lighting, computer displays, LCD televisions, signs and signaling and architectural lighting....

  16. Reporting LED Luminaire Product Performance

    SciTech Connect

    2008-12-01

    This brochure on LED product performance is an outcome of a joint DOE-NGLIA effort to assure and improve the quality of SSL products.

  17. About the DOE Municipal Solid-State Street Lighting Consortium...

    Energy Saver

    Many of the planned demonstrations are similar except for geographic location (which impacts local climate), cost of electricity, and related details. SSL streetlights are still a ...

  18. Text-Alternative Version: Municipal Solid-State Street Lighting...

    Energy Saver

    ... There are many reasons to believe that shorter wave lengths can be beneficial. They can ... There's a discussion on power line communication as part of the smart grid, but a ...

  19. Portland Street Lighting Report (August 2015) | Department of Energy

    Energy Saver

    Polymer and Composite Materials Meeting Polymer and Composite Materials Meeting The U.S. Department of Energy's Fuel Cell Technologies Office and Sandia National Laboratories held a Polymer and Composite Materials Meeting on October 17-18, 2012, in Washington, D.C., to share information about the use of polymer and composite materials in hydrogen applications. Meeting objectives were 1) to discuss knowledge gaps and data needs for using polymers and composite materials systems in hydrogen

  20. Restoring Detroits Street Lighting System

    Energy Saver

    Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy [FR Doc. 2010-11127] July 12, 2010 | Department of Energy to Request for Information from the Department of Energy: Implementing the National Broadband Plan by Empowering Consumers and the Smart Grid: Data Access, Third Party Use, and Privacy [FR Doc. 2010-11127] July 12, 2010 Response to Request for Information from the Department of Energy: Implementing the

  1. Recovery Act is "Lighting Up" the Streets of Philadelphia

    Energy.gov [DOE]

    The city is converting 58,000 traffic signals, which is just one of the city's energy efficiency targets.

  2. EERE Success Story-Improving the Efficiency and Lowering the Cost of LED

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Lighting | Department of Energy Improving the Efficiency and Lowering the Cost of LED Lighting EERE Success Story-Improving the Efficiency and Lowering the Cost of LED Lighting July 13, 2016 - 10:30am Addthis Photo Courtesy | Lumileds Photo Courtesy | Lumileds One of the biggest initial barriers to the widespread adoption of energy-efficient light-emitting diodes (LEDs) has been the cost. While considerable progress has been made on that front, further cost reductions will result in even

  3. Low-Cost Illumination-Grade LEDs

    SciTech Connect

    Epler, John

    2013-08-31

    Solid State Lighting is a cost-effective, energy-conserving technology serving a rapidly expand- ing multi-billion dollar market. This program was designed to accelerate this lighting revolution by reducing the manufacturing cost of Illumination-Grade LEDs. The technical strategy was to investigate growth substrate alternatives to standard planar sapphire, select the most effective and compatible option, and demonstrate a significant increase in Lumen/$ with a marketable LED. The most obvious alternate substrate, silicon, was extensively studied in the first two years of the program. The superior thermal and mechanical properties of Si were expected to improve wavelength uniformity and hence color yield in the manufacture of high-power illumination- grade LEDs. However, improvements in efficiency and epitaxy uniformity on standard c-plane sapphire diminished the advantages of switching to Si. Furthermore, the cost of sapphire decreased significantly and the cost of processing Si devices using our thin film process was higher than expected. We concluded that GaN on Si was a viable technology but not a practical option for Philips Lumileds. Therefore in 2012 and 2013, we sought and received amendments which broadened the scope to include other substrates and extended the time of execution. Proprietary engineered substrates, off-axis (non-c-plane) sapphire, and c-plane patterned sapphire substrates (PSS) were all investigated in the final 18 months of this program. Excellent epitaxy quality was achieved on all three candidates; however we eliminated engineered substrates and non-c-plane sapphire because of their higher combined cost of substrate, device fabrication and packaging. Ultimately, by fabricating a flip-chip (FC) LED based upon c-plane PSS we attained a 42% reduction in LED manufacturing cost relative to our LUXEON Rebel product (Q1-2012). Combined with a flux gain from 85 to 102 Lm, the LUXEON Q delivered a 210% increase in Lm/$ over this time period. The

  4. New CALiPER Snapshot on LED Downlights | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    CALiPER Snapshot on LED Downlights New CALiPER Snapshot on LED Downlights June 29, 2016 - 12:56pm Addthis DOE's CALiPER program has released a new Snapshot report on LED downlights. Among the key findings of the new Snapshot, which is based on DOE's LED Lighting Facts® database: Across all products listed with LED Lighting Facts, average efficacy gains continue to track at about 10 lm/W per year. The efficacy of LED downlights is lower than that of most of the LED luminaire types but higher

  5. LED Color Stability: 10 Important Questions | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Color Stability: 10 Important Questions LED Color Stability: 10 Important Questions This April 15, 2014 webinar examined the causes of color shift, and took a look at existing metrics used to describe color shift/color stability in LED lighting. The lumen maintenance lifetime of many LED products is 25,000 hours or more, but that doesn't mean products are guaranteed to perform the same over that time. One thing that could change is the color of the light, or chromaticity. Presenters Michael

  6. Interstate Power and Light Co | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Light Co Jump to: navigation, search Name: Interstate Power and Light Co Address: 200 1st Street Southeast Place: Cedar Rapids, Iowa Zip: 52401 Website: www.alliantenergy.com...

  7. Model Specification for Networked Outdoor Lighting Control Systems

    Energy.gov [DOE]

    The DOE Municipal Solid-State Street Lighting Consortium's Model Specification for Networked Outdoor Lighting Control Systems is a tool designed to help cities, utilities, and other local agencies...

  8. LED structure with enhanced mirror reflectivity

    DOEpatents

    Bergmann, Michael; Donofrio, Matthew; Heikman, Sten; Schneider, Kevin S; Haberern, Kevin W; Edmond, John A

    2014-04-01

    Embodiments of the present invention are generally related to LED chips having improved overall emission by reducing the light-absorbing effects of barrier layers adjacent mirror contacts. In one embodiment, a LED chip comprises one or more LEDs, with each LED having an active region, a first contact under the active region having a highly reflective mirror, and a barrier layer adjacent the mirror. The barrier layer is smaller than the mirror such that it does not extend beyond the periphery of the mirror. In another possible embodiment, an insulator is further provided, with the insulator adjacent the barrier layer and adjacent portions of the mirror not contacted by the active region or by the barrier layer. In yet another embodiment, a second contact is provided on the active region. In a further embodiment, the barrier layer is smaller than the mirror such that the periphery of the mirror is at least 40% free of the barrier layer, and the second contact is below the first contact and accessible from the bottom of the chip.

  9. LED Watch: Good Isnt Quite Good Enough

    Energy Saver

    Good Isn't QuIte Good enouGh A DOE white paper examines what we stand to gain by increasing lED efficacy T he rapid and substantial gains in efficacy shown by LED lighting products over the past few years might prompt some people to question the need for further targeted improvements in this area. Today's high-performing LED devices can produce 160 lumens per watt, with most high-performing LED luminaires achieving 125 to 135 lm/W. And while those figures fall considerably short of the U.S.

  10. Alternative Fuels Data Center: Natural Gas Street Sweepers Improve...

    Alternative Fuels and Advanced Vehicles Data Center

    Natural Gas Street Sweepers Improve Air Quality in New York to someone by E-mail Share Alternative Fuels Data Center: Natural Gas Street Sweepers Improve Air Quality in New York on ...

  11. 2014 Wall Street Perspective on SMRs | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Perspective on SMRs 2014 Wall Street Perspective on SMRs Summary briefing on the results of a 2014 survey of Wall Street attitudes toward SMRs. PDF icon 2014 New Generation ...

  12. Magical Mystery Devices or Not: How do LED Lamps and Luminaires Really Measure-Up?

    SciTech Connect

    Paget, Maria L.; McCullough, Jeffrey J.; Steward, Heidi E.

    2008-08-15

    Solid-state lighting products for general lighting applications are now gaining a market presence, and more and more people are asking, “Which of these are ‘good’ products? Do they perform as claimed? How do they compare? Light Emitting Diodes (LEDs) differ from other light sources enough to require new procedures for measuring their performance and comparing to other lighting options, so both manufacturers and buyers are facing a learning curve. The energy-efficiency community has traditionally compared light sources based on system efficacy: rated lamp lumens divided by power into the system. This doesn’t work for LEDs because there are no standard LED “lamp” packages and no lamp ratings, and because LED performance depends heavily on thermal, electrical, and optical design of complete lighting unit or ‘luminaire’. Luminaire efficacy is the preferred metric for LEDs because it measures the net light output from the luminaire divided by power into the system.

  13. DOE Publishes CALiPER Snapshot Report on Indoor LED Luminaires

    Energy.gov [DOE]

    The U.S. Department of Energy's CALiPER program has released a Snapshot Report on indoor LED luminaires, which utilizes the LED Lighting Facts® program's extensive product database to help industry...

  14. DOE Publishes CALiPER Snapshot Report on LED A Lamps

    Energy.gov [DOE]

    DOE's CALiPER program has released a Snapshot Report on LED A lamps, which utilizes the LED Lighting Facts program's extensive product database to help industry stakeholders understand the current state and trajectory of the market for that class

  15. Carnegie Mellon University Develops Innovative Way to Improve Thermal Management in LEDs

    Energy.gov [DOE]

    The accumulation of heat in LED packages gives rise to a cascade of detrimental effects that reduce the optical and mechanical performance of LED lighting products. For that reason, heat...

  16. Lighting Basics | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Homes & Buildings » Lighting & Daylighting » Lighting Basics Lighting Basics August 15, 2013 - 5:12pm Addthis Text Version There are many different types of artificial lights (formally called "lamps" in the lighting industry,) which have different applications and uses. Types of lighting include: Fluorescent Lighting High-intensity Discharge Lighting Incandescent Lighting LED Lighting. New lamp designs that use energy-efficient technology are now readily available in the

  17. Successful Selection of LED Streetlight Luminaires: Optimizing...

    Energy Saver

    Webcasts Successful Selection of LED Streetlight Luminaires: Optimizing Illumination and Economic Performance Successful Selection of LED Streetlight Luminaires: Optimizing ...

  18. CALiPER Benchmark Report: Performance of Incandescent A Type and Decorative Lamps and LED Replacements

    SciTech Connect

    Lingard, R. D.; Myer, M. A.; Paget, M. L.

    2008-11-01

    This benchmark report addresses common omnidirectional incandescent lamps - A-type and small decorative, candelabra-type lamps - and their commercially available light-emitting diode (LED) replacements.

  19. Effective White Light Options for Parking Area Lighting | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy Effective White Light Options for Parking Area Lighting Effective White Light Options for Parking Area Lighting Document details lighting technologies that provide low-maintenance alternatives to high-pressure sodium lighting. Download the document detailing effective white light options for parking area lighting. (189.54 KB) More Documents & Publications LED Provides Effective and Efficient Parking Area Lighting at the NAVFAC Engineering Service Center Demonstration Assessment of

  20. Carrier Corporation 7310 West Morris Street

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Carrier Corporation 7310 West Morris Street Indianapolis, IN. 46231 July 11, 2016 U.S. Department of Energy Office of General Counsel 1000 Independence Avenue SW. Room 6A245 Washington, DC, 20585 RE: Comments to Docket Number: 2016-10956 Regulatory Burden RFI United Technologies Climate, Controls, and Security and its Carrier business would like to submit the following comments to the proposed questions as well as additional commentary as requested and referenced in the RFI. As referenced in the

  1. Outdoor Lighting | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Outdoor Lighting Outdoor Lighting Outdoor lighting consumes a significant amount of energy-about 1.3 quadrillion Btu annually-costing about $10 billion per year. In the last five years, a number of municipalities have switched to new LED technologies that can reduce energy costs by approximately 50% over conventional lighting technologies and provide additional savings of 20 to 40% with advance lighting controls. Beyond cost and energy savings, the higher efficiency of LED lights provides other

  2. Text-Alternative Version: LED Essentials - Technology, Applications,

    Energy Saver

    Advantages, Disadvantages | Department of Energy Essentials - Technology, Applications, Advantages, Disadvantages Text-Alternative Version: LED Essentials - Technology, Applications, Advantages, Disadvantages Below is the text-alternative version of the LED Essentials - Technology, Applications, Advantages, Disadvantages webcast. Speaker: Hi, this is Kevin Dowling. I'm with Philips Solid-State Lighting in Burlington, Massachusetts. I'm the head of innovation, but my industrial roles include

  3. LED lamp power management system and method

    DOEpatents

    Gaines, James; Clauberg, Bernd; Van Erp, Josephus A. M.

    2013-03-19

    An LED lamp power management system and method including an LED lamp having an LED controller 58; a plurality of LED channels 60 operably connected to the LED controller 58, each of the plurality of LED channels 60 having a channel switch 62 in series with at least one shunted LED circuit 83, the shunted LED circuit 83 having a shunt switch 68 in parallel with an LED source 80. The LED controller 58 reduces power loss in one of the channel switch 62 and the shunt switch 68 when LED lamp electronics power loss (P.sub.loss) exceeds an LED lamp electronics power loss limit (P.sub.lim); and each of the channel switches 62 receives a channel switch control signal 63 from the LED controller 58 and each of the shunt switches 68 receives a shunt switch control signal 69 from the LED controller 58.

  4. LED lamp color control system and method

    SciTech Connect

    Gaines, James; Clauberg, Bernd; Van Erp, Josephus A.M.

    2013-02-05

    An LED lamp color control system and method including an LED lamp having an LED controller 58; and a plurality of LED channels 60 operably connected to the LED controller 58, each of the plurality of LED channels 60 having a channel switch 62 in series with at least one shunted LED circuit 83, the shunted LED circuit 83 having a shunt switch 68 in parallel with an LED source 80. The LED controller 58 determines whether the LED source 80 is in a feedback controllable range, stores measured optical flux for the LED source 80 when the LED source 80 is in the feedback controllable range, and bypasses storing the measured optical flux when the LED source 80 is not in the feedback controllable range.

  5. Text-Alternative Version: LED Color Stability Webinar | Department of

    Energy Saver

    Energy Color Stability Webinar Text-Alternative Version: LED Color Stability Webinar Michael Royer: All right, welcome ladies and gentleman. I'm Michael Royer of Pacific Northwest National Laboratory, and I'd like to welcome you to today's webinar on LED Color Stability, Ten Important Questions, brought to you by the U.S. Department of Energy Solid-State Lighting Program. We're happy to have as our speakers today Chad Stalker of Philips Lumileds Lighting Company and Ralph Tuttle of Cree Hong

  6. Using Computation to Enhance LEDs

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    being developed to harvest light energy from the Sun. Key Challenges: studying the electronic and optical properties of small-diameter InN nanowires using first-principles...

  7. Outdoor Area Lighting | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Outdoor Area Lighting Outdoor Area Lighting This document reviews the major design and specification concerns for outdoor area lighting, and discusses the potential for LED luminaires to save energy plant-wide while providing high quality lighting for outdoor areas. Outdoor Area Lighting (June 2008) (3.16 MB) More Documents & Publications Philadelphia International Airport Apron Lighting: LED System Performance in a Trial Installation Model Specification for LED Roadway Luminaires, V2.0

  8. What's Next for Solid-State Lighting?

    Energy Saver

    Photo courtesy of GE Lighting What's Next for Solid-State Lighting? A s we stand on the brink of a lighting revolution spearheaded by light-emitting diode (LED) technology, one ...

  9. High-Voltage LED Light Engine with Integrated Driver

    Energy.gov [DOE]

    Lead Performer: Lumileds, LLC – San Jose, CADOE Total Funding: $1,499,346Cost Share: $499,783Project Term: 9/1/2014 - 2/29/2016Funding Opportunity: SSL R&D Funding Opportunity Announcement (FOA...

  10. Why Did the LED Light Bulb Cross the Road?

    Office of Energy Efficiency and Renewable Energy (EERE)

    Could using humor as a marketing strategy make energy efficiency a bit more digestible? One Illinois grant recipient thinks it could be.

  11. Technical Feasibility Assessment of LED Roadway Lighting on the...

    Office of Scientific and Technical Information (OSTI)

    which would reduce energy use and maintenance without compromising the quantity or ... but these products might actually increase maintenance due to the shorter rated lamp life. ...

  12. Article Published on LED Lumen Maintenance and Light Loss Factors...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    January 20, 2014 - 12:00am Addthis An article has been published in LEUKOS: The Journal of the Illuminating Engineering Society of North America (IES) that may be of...

  13. Demonstration Assessment of Light-Emitting Diode (LED) Accent...

    Office of Scientific and Technical Information (OSTI)

    Subject: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; AIR CONDITIONING; CONTROL SYSTEMS; DEMONSTRATION PROGRAMS; DESIGN; EDUCATIONAL FACILITIES; FEEDBACK; HALOGENS; ...

  14. Demonstration Assessment of Light-Emitting Diode (LED) Parking...

    Office of Scientific and Technical Information (OSTI)

    Lot Performance Specification developed by the DOE's Commercial Building Energy Alliance. ... This demonstration met the GATEWAY requirements of saving energy, matching or ...

  15. Text-Alternative Version: LED Site Lighting in the Commercial...

    Energy Saver

    ... Unless anyone's listening from there, they can just drop me a line. I'm sorry, these are ... in that because they tend to be a lower voltage source, they can work well with solar ...

  16. Keeping Pace with LED Lighting Trends | Department of Energy

    Energy Saver

    questions related to product lifetime, reliability, color, dimming, flicker, and power quality The evolution of national programs and state requirements The workshop will be ...

  17. Seeing the Light: LED Under-Cabinet and Recessed Downlights

    Energy.gov [DOE]

    I moved into my apartment about four years ago. Little by little, I've continued to make improvements that help me save money on my energy bills.

  18. #AskEnergySaver: LED Lights | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    times longer. To learn more about saving energy at home, visit Energy Saver. To help you save money by saving energy, we launched AskEnergySaver -- an online series that gives...

  19. Save Money with LED Holiday Light Strings | Department of Energy

    Energy Saver

    Department of Energy Energy, Cut Costs, and Bring a Different Kind of Value to Work Save Energy, Cut Costs, and Bring a Different Kind of Value to Work June 1, 2010 - 7:30am Addthis Amy Foster Parish For many of us, thinking about energy efficiency means thinking about changes we can make at home. But residential energy efficiency is just one slice of the energy use pie. According to data from the Energy Information Administration, energy use in the residential and commercial sectors is neck

  20. Adoption of Light-Emitting Diodes in Common Lighting Applications

    SciTech Connect

    Yamada, Mary; Chwastyk, Dan

    2013-05-01

    Report estimating LED energy savings in nine applications where LEDs compete with traditional lighting sources such as incandescent, halogen, high-pressure sodium, and certain types of fluorescent. The analysis includes indoor lamp, indoor luminaire, and outdoor luminaire applications.

  1. Low Cost Lithography Tool for High Brightness LED Manufacturing

    SciTech Connect

    Andrew Hawryluk; Emily True

    2012-06-30

    The objective of this activity was to address the need for improved manufacturing tools for LEDs. Improvements include lower cost (both capital equipment cost reductions and cost-ofownership reductions), better automation and better yields. To meet the DOE objective of $1- 2/kilolumen, it will be necessary to develop these highly automated manufacturing tools. Lithography is used extensively in the fabrication of high-brightness LEDs, but the tools used to date are not scalable to high-volume manufacturing. This activity addressed the LED lithography process. During R&D and low volume manufacturing, most LED companies use contact-printers. However, several industries have shown that these printers are incompatible with high volume manufacturing and the LED industry needs to evolve to projection steppers. The need for projection lithography tools for LED manufacturing is identified in the Solid State Lighting Manufacturing Roadmap Draft, June 2009. The Roadmap states that Projection tools are needed by 2011. This work will modify a stepper, originally designed for semiconductor manufacturing, for use in LED manufacturing. This work addresses improvements to yield, material handling, automation and throughput for LED manufacturing while reducing the capital equipment cost.

  2. Controls for Solid-State Lighting

    SciTech Connect

    Rubinstein, Francis

    2007-06-22

    This study predicts new hybrid lighting applications for LEDs. In hybrid lighting, LEDs provide a low-energy 'standby' light level while another, more powerful, efficient light source provides light for occupied periods. Lighting controls will allow the two light sources to work together through an appropriate control strategy, typically motion-sensing. There are no technical barriers preventing the use of low through high CRI LEDs for standby lighting in many interior and exterior applications today. The total luminous efficacy of LED systems could be raised by increasing the electrical efficiency of LED drivers to the maximum practically achievable level (94%). This would increase system luminous efficacy by 20-25%. The expected market volumes for many types of LEDs should justify the evolution of new LED drivers that use highly efficient ICs and reduce parts count by means of ASICs. Reducing their electronics parts count by offloading discrete components onto integrated circuits (IC) will allow manufacturers to reduce the cost of LED driver electronics. LED luminaire manufacturers will increasingly integrate the LED driver and thermal management directly in the LED fixture. LED luminaires of the future will likely have no need for separable lamp and ballast because the equipment life of all the LED luminaire components will all be about the same (50,000 hours). The controls and communications techniques used for communicating with conventional light sources, such as dimmable fluorescent lighting, are appropriate for LED illumination for energy management purposes. DALI has been used to control LED systems in new applications and the emerging ZigBee protocol could be used for LEDs as well. Major lighting companies are already moving in this direction. The most significant finding is that there is a significant opportunity to use LEDs today for standby lighting purposes. Conventional lighting systems can be made more efficient still by using LEDs to provide a low

  3. Renaissance Lighting Inc | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Renaissance Lighting Inc. Place: Herndon, Virginia Product: Utilizing patented LED optics, Renaissance Lighting delivers uniformity in wall wash and floodlight applications by...

  4. Moon Solar Light MSL | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Product: developed and distributes solar-based lighting applications using PV panels, LED lights and ultra-capacitors. Coordinates: 31.899309, 34.807999 Show Map Loading...

  5. Visible Light Solar Technologies | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    Solar Technologies Place: Albuquerque, New York Zip: 87113 Product: New Mexico-based LED lighting fixture maker. References: Visible Light Solar Technologies1 This article is...

  6. 2016 Animal Responses to Light Meeting Report

    Energy.gov [DOE] (indexed site)

    ... of the Agency's recent applications of sea turtle lighting in the northern Gulf of Mexico. ... Given sea turtle sensitivities to short wavelengths, outdoor amber LED lighting (with ...

  7. Types of Lighting | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    selection. Types of lighting include: Fluorescent Incandescent Outdoor solar Light-emitting diode (LED) Also learn how energy-efficient lightbulbs compare to traditional...

  8. Outdoor Area Lighting | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    for outdoor areas. Outdoor Area Lighting (June 2008) More Documents & Publications Philadelphia International Airport Apron Lighting: LED System Performance in a Trial...

  9. Snapshot: Outdoor Area Lighting | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Outdoor Area Lighting Snapshot: Outdoor Area Lighting A report using LED Lighting Facts data to examine the current state of the market for outdoor area lighting. (8 pages, September 2016) Snapshot: Outdoor Area Lighting (3.02 MB) More Documents & Publications Snapshot: Downlights October 2016 Postings LED ADOPTION REPORT

  10. Lighting Controls | Department of Energy

    Energy Saver

    LED bulbs and fixtures must be designed for dimming, and you may need to replace existing dimmer switches with ones that are compatible with an LED lighting product. The packaging ...

  11. Feedback-Controlled LED Photobioreactor for Photophysiological Studies of Cyanobacteria

    SciTech Connect

    Melnicki, Matthew R.; Pinchuk, Grigoriy E.; Hill, Eric A.; Kucek, Leo A.; Stolyar, Sergey; Fredrickson, Jim K.; Konopka, Allan; Beliaev, Alex S.

    2013-04-09

    A custom photobioreactor (PBR) was designed to enable automatic light adjustments using computerized feedback control. A black anodized aluminum enclosure, constructed to surround the borosilicate reactor vessel, prevents the transmission of ambient light and serves as a mount for arrays of light-emitting diodes (LEDs). The high-output LEDs provide narrow-band light of either 630 or 680 nm for preferential excitation of the cyanobacterial light-harvesting pigments, phycobilin or chlorophyll a, respectively. Custom developed software BioLume provides automatic control of optical properties and a computer feedback loop can automatically adjust the incident irradiance as necessary to maintain a fixed transmitted light through the culture, based on user-determined set points. This feedback control serves to compensate for culture dynamics which have optical effects, (e.g., changing cell density, pigment adaptations) and thus can determine the appropriate light conditions for physiological comparisons or to cultivate light-sensitive strains, without prior analyses. The LED PBR may also be controlled as a turbidostat, using a feedback loop to continuously adjust the rate of media-dilution based on the transmitted light measurements, with a fast and precise response. This cultivation system gains further merit as a high-performance analytical device, using non-invasive tools (e.g., dissolved gas sensors, online mass spectrometry) to automate real-time measurements, thus permitting unsupervised experiments to search for optimal growth conditions, to monitor physiological responses to perturbations, as well as to quantitate photophysiological parameters using an in situ light-saturation response routine.

  12. Switched-capacitor isolated LED driver

    DOEpatents

    Sanders, Seth R.; Kline, Mitchell

    2016-03-22

    A switched-capacitor voltage converter which is particularly well-suited for receiving a line voltage from which to drive current through a series of light emitting diodes (LEDs). Input voltage is rectified in a multi-level rectifier network having switched capacitors in an ascending-bank configuration for passing voltages in uniform steps between zero volts up to full received voltage V.sub.DC. A regulator section, operating on V.sub.DC, comprises switched-capacitor stages of H-bridge switching and flying capacitors. A current controlled oscillator drives the states of the switched-capacitor stages and changes its frequency to maintain a constant current to the load. Embodiments are described for isolating the load from the mains, utilizing an LC tank circuit or a multi-primary-winding transformer.

  13. LOW-COST LED LUMINAIRE FOR GENERAL ILLUMINATION

    SciTech Connect

    Lowes, Ted

    2014-07-31

    During this two-year Solid-State Lighting (SSL) Manufacturing R&D project Cree developed novel light emitting diode (LED) technologies contributing to a cost-optimized, efficient LED troffer luminaire platform emitting at ~3500K correlated color temperature (CCT) at a color rendering index (CRI) of >90. To successfully achieve program goals, Cree used a comprehensive approach to address cost reduction of the various optical, thermal and electrical subsystems in the luminaire without impacting performance. These developments built on Cree’s high- brightness, low-cost LED platforms to design a novel LED component architecture that will enable low-cost troffer luminaire designs with high total system efficacy. The project scope included cost reductions to nearly all major troffer subsystems as well as assembly costs. For example, no thermal management components were included in the troffer, owing to the optimized distribution of compact low- to mid-power LEDs. It is estimated that a significant manufacturing cost savings will result relative to Cree’s conventional troffers at the start of the project. A chief project accomplishment was the successful development of a new compact, high-efficacy LED component geometry with a broad far-field intensity distribution and even color point vs. emission angle. After further optimization and testing for production, the Cree XQ series of LEDs resulted. XQ LEDs are currently utilized in Cree’s AR series troffers, and they are being considered for use in other platforms. The XQ lens geometry influenced the independent development of Cree’s XB-E and XB-G high-voltage LEDs, which also have a broad intensity distribution at high efficacy, and are finding wide implementation in Cree’s omnidirectional A-lamps.

  14. DOE Solid-State Lighting Program: Modest Investments, Extraordinary...

    Energy Saver

    Modest Investments, Extraordinary Impacts DOE Solid-State Lighting Program Shaping the Future of Solid-State Lighting Today, LED (light-emitting diode) technologies illuminate ...

  15. Demonstration Assessment of Light-Emitting Diode Parking Structure...

    Office of Scientific and Technical Information (OSTI)

    Parking Structure Lighting at U.S. Department of Labor Headquarters Kinzey, Bruce R.; Myer, Michael solid-state lighting; LEDs; occupancy sensor controls; parking facility lighting...

  16. LEDs and Specification for Parking Lots Lighten Energy Load | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy LEDs and Specification for Parking Lots Lighten Energy Load LEDs and Specification for Parking Lots Lighten Energy Load March 5, 2013 - 11:17am Addthis At its Supercenter in Leavenworth, Kansas—the first site to implement the LED Site Lighting Specification—Walmart anticipates energy savings of over 125,000 kWh per year and a 30% reduction in maintenance costs. In addition to parking lot lights, LED bollard lights illuminate the pedestrian walkway. Credit: Walmart At its

  17. Street Legal Named SBA HUBZone Business of the Year

    Energy.gov [DOE]

    On Sept. 25, Street Legal Industries, Inc. was recognized as the U. S. Small Business Administration (SBA) 2014 Tennessee HUBZone Small Business of the Year.

  18. Federally Led Accident Investigation Reports | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Federally Led Accident Investigation Reports Federally Led Accident Investigation Reports Includes Pre-March 2011 Type A Reports June 1, 1999 Type A Accident Investigation Board...

  19. WhiteOptics' Low-Cost Reflector Composite Boosts LED Fixture Efficiency

    Energy.gov [DOE]

    With the help of DOE funding, WhiteOptics has developed a composite coating that can be used to improve efficiency in backlit, indirect, and cavity-mixing LED luminaire designs by maximizing light reflection and output. The highly diffuse coating, which is based on a novel high-reflectance particle technology, allows for uniform distribution of light without exaggerating the point-source nature of the LEDs, and is intended to offer an overall system cost-improving solution for LED optics.

  20. Small Area Array-Based LED Luminaire Design

    SciTech Connect

    Thomas Yuan

    2008-01-09

    This report contains a summary of technical achievements during a three-year project to demonstrate high efficiency LED luminaire designs based on small area array-based gallium nitride diodes. Novel GaN-based LED array designs are described, specifically addressing the thermal, optical, electrical and mechanical requirements for the incorporation of such arrays into viable solid-state LED luminaires. This work resulted in the demonstration of an integrated luminaire prototype of 1000 lumens cool white light output with reflector shaped beams and efficacy of 89.4 lm/W at CCT of 6000oK and CRI of 73; and performance of 903 lumens warm white light output with reflector shaped beams and efficacy of 63.0 lm/W at CCT of 2800oK and CRI of 82. In addition, up to 1275 lumens cool white light output at 114.2 lm/W and 1156 lumens warm white light output at 76.5 lm/W were achieved if the reflector was not used. The success to integrate small area array-based LED designs and address thermal, optical, electrical and mechanical requirements was clearly achieved in these luminaire prototypes with outstanding performance and high efficiency.

  1. Small Nebraska Town Welcomes LEDs and Energy Savings

    Energy.gov [DOE]

    Tecumseh’s town historic town square is home to the city hall, courthouse, post office, and during the summer months—a farmers market. Now, this historic square, built in the 1850’s, is about to become home to something new: LED lights.

  2. Alliant Energy Interstate Power and Light (Gas and Electric)...

    Energy.gov [DOE] (indexed site)

    Geothermal Heat Pumps: 1,600 - 3,200 Lighting Fixtures: varies, up to 100fixture Light bulbs and lighting: varies, up to 15bulb LED Fixtures: 30 LED Bulbs: 10 FanMotor...

  3. Effective White Light Options for Parking Area Lighting

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    While both providing white light, LED (foreground) provides improved uniformity and energy efficiency compared to induction (background upper right) but at a higher installed cost. ...

  4. (Lighting and) Solid-State Lighting: Science, Technology, Economic...

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Applications National Solar Thermal Test Facility ... Facilities Atmospheric Radiation Measurement Climate ... Topics cover the basics of light-emitting diode (LED) ...

  5. Maximizing Energy Savings with New Technologies in Lighting and Lighting Controls

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Maximizing Energy Savings with New Technologies in Lighting and Lighting Controls Mike Matour, National Sales Manager - Energy Lutron Electronics Agenda * FEMP Promising Technologies * Today's Lighting Controls * Why Controls? * New Technologies - Wireless Solutions * New Technologies - Advanced Controls * LEDs - How to control? #1 Single Zone Lighting Controls Multi-Zone Lighting Controls Advanced Lighting & HVAC Control Systems Total Light Management 8 Simple Light Control Strategies /

  6. CHP at Post Street in Downtown Seattle

    SciTech Connect

    Gent, Stan

    2012-04-12

    The Post Street project had four (4), 7.960 MW, Solar Taurus-70-10801S natural gas combustion turbines. Each turbine equipped with a 40,000 lb/hr heat recovery steam generator (HRSG). The dual-fuel HRSGs was capable of generating steam using gas turbine exhaust heat or surplus electric power. The generation capacity was nominally rated at 29.2 MW. The project as proposed had a fuel rate chargeable to power of 4,900 - 5,880 Btu/kWh dependent on time of year. The CHP plant, when operating at 29.2 MW, can recycle turbine exhaust into supply 145 kpph of steam to SSC per hour. The actual SSC steam loads will vary based on weather, building occupation, plus additions / reductions of customer load served. SSC produces up to 80 kpph of steam from a biomass boiler, which is currently base loaded all year.

  7. One West Third Street Tulsa, Oklahoma

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    ... grid and was operating solely on diesel generators to serve its load, keeping the lights ... of Electricity Delivery and Energy Reliability, where he worked closely with Western ...

  8. Using QECBs for Street Lighting Upgrades. Lighting the Way to Lower Energy Bills in San Diego

    SciTech Connect

    Zimring, Mark

    2012-07-18

    This report provides a description for QECBs, their benefits, and how they can be used in various cases.

  9. OSTIblog Articles in the LED Topic | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information LED Topic Enjoy the benefits of LED lighting by Kathy Chambers 30 Dec, 2013 in Products and Content 13966 Photographic%20credit%E2%80%9CArchitect%20of%20the%20Capitol.%E2%80%9D%202010%20LED%20Tree.jpg Enjoy the benefits of LED lighting Read more about 13966 Every day we are bombarded with advertisements in every form and format telling us that our lives will be improved if we buy a particular product because it will save us money, reduce our work effort,

  10. DOE Publishes CALiPER Snapshot Report on LED MR16 Lamps | Department of

    Energy Saver

    Energy Snapshot Report on LED MR16 Lamps DOE Publishes CALiPER Snapshot Report on LED MR16 Lamps March 5, 2014 - 4:23pm Addthis The U.S. Department of Energy's CALiPER program has released a Snapshot Report on MR16 lamps, which utilizes the LED Lighting Facts® program's extensive product database to help industry stakeholders understand the current state and trajectory of the market for that class of products. Among the key findings: Few MR16 lamps currently listed by LED Lighting Facts are

  11. DOE Joint Solid State Lighting Roundtables on Science Challenges

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    U.S. Department of Energy Prepared By: LED Lighting Advisors Navigant Consulting, Inc. ......... 2 2. LED Critical R&D Challenges ...

  12. Decisions that led to Y-12

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    Decisions that led to Y-12 Last week we saw the political and organizational changes that led up to the Manhattan Project being created on August 13, 1942. The S-1 Executive ...

  13. Final decisions that led to Y-12

    U.S. Department of Energy (DOE) - all webpages (Extended Search)

    decisions that led to Y-12 As we have seen earlier in this series, Ernest O. Lawrence and ... By late 1942, progress on the reactor technology being led by Enrico Fermi at the ...

  14. LED R&D | Department of Energy

    Energy.gov [DOE] (indexed site)

    DOE-funded LED R&D projects tackle the science and technology challenges that stand in the way of achieving SSL Program targets for LED efficacy, performance, and cost. All project ...

  15. SemiLEDs | Open Energy Information

    OpenEI (Open Energy Information) [EERE & EIA]

    SemiLEDs Place: Boise, Idaho Zip: 83702 Product: US-based LED chip maker with Asia manufacturing operations. Coordinates: 43.60698, -116.193409 Show Map Loading map......

  16. Updating the LED Life Cycle Assessment

    Energy Saver

    Part 2: LED Manufacturing and Performance 7 Goal of the New Study Review new literature on the life- cycle assessment of LED products. Determine if newer A-19 products...

  17. LED Watch: The Outlook for OLEDs

    Energy.gov [DOE]

    December 2014 LED Watch: The Outlook for OLEDs James Brodrick, U.S. Department of Energy LD+A Magazine

  18. Energy Savings Estimates of Light Emitting Diodes in Niche Lighting Applications

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Estimates of Light Emitting Diodes in Niche Lighting Applications Prepared for: Building Technologies Program Office of Energy Efficiency and Renewable Energy U.S. Department of Energy Prepared by: Navigant Consulting Inc. 1801 K Street, NW Suite 500 Washington DC, 20006 September 2008 * Department of Energy Washington, DC 20585 Energy Savings Estimates of Light Emitting Diodes in Niche Lighting Applications Released: September 2008 Revised: October 2008 This DOE report presents research

  19. LED Market Adoption: Status and Trends

    Energy Saver

    (lmW) 67 60 CCT (K) 3000 3500 L 70 (hours) 28,000 36,000 Price (unit) 23 30 18 LED Linear Fixtures 19 T12 26% T8 67% T5 7% LED Lamp <1% LED Luminaire <1% 2012 T12 17% T8 72%...

  20. Tests gauge LED sensors for fuel-dye measurements

    SciTech Connect

    Ozanich, Richard M.; Lucke, Richard B.; Melville, Angela M.; Wright, Bob W.

    2009-10-19

    The goal of this work was to develop a low cost, robust sensor to allow direct measurement of Solvent Red 164 dye concentration in off-road fuel at refineries and fuel terminals. Optical absorption sensors based on light emitting diodes (LEDs) are rugged, low-cost, have low power consumption, and can be designed to be intrinsically safe.LED-based systems have been used in a variety of chemical detection applications including heavy metals, pH, CO2, and O2. The approach for this work was to develop a sensor that could be mounted on a pipeline sight glass, precluding the need for direct contact of the sensor with the fuel. Below is described the design and testing of three different LED/photodiode sensors utilizing reflectance spectrometry for the measurement of dye concentration.