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Title: Integration of Battery Modeling with Solar Building Energy Storage

Abstract

Battery Informatics, Inc (Bii) has completed a Phase 1 SBIR project funded by DOE for integration of battery modeling with solar storage for energy management of buildings. Bii has shown the potential of doubling the lifetime throughput of Li-Iron-Phosphate batteries with the result that the levelized cost of storage (LCOS) may be reduced by 50% reaching a level of 5 to 8 cents per kWh. These improvements are achieved by reformulating standard battery operating constraints into marginal costs and then optimizing the trade-off between application benefits versus battery degradation. These batteries will normally operate with a smaller discharge window except when there is a valuable reason to go to deep discharge. Improved battery management can benefit a broad range of markets. There are three major markets of interest to Bii: a) solar + storage for C&I buildings where time shifting, reduced demand charges, and arbitrage are important, b) grid + storage where frequency regulation and ancillary services are the focus, and c) residential buildings where time-shifting and power backup are important. Bii is mostly focused on C&I buildings because tight integration of models of energy consumption with battery degradation models will result in significant savings by using software that canmore » exploit all opportunities for optimization. By integrating solar + building + grid + storage, we have the ingredients for dispatchable renewable energy based on one-day ahead planning to deliver promised amounts of energy at firm times. Once this is made cost-effective, automated, and demonstrated, it will make the renewable energy more valuable. It will also make the building owner both a producer and consumer of energy resulting in a net cost reduction in the monthly utility bill. Our battery management may be able to deliver two times the value produced by our competitors plus 10% reduction in energy costs. Our improvements are achieved with no reduction in battery safety, violation of supplier warranty, or any physical changes to the batteries. Most of the improvements are implemented in the higher-level applications that control the batteries. Using the software developed by Bii, a wide range of applications can benefit from these improvements. For example, Bii is in discussions with an Energy Storage System (ESS) company for Bii to do battery testing for them and for Bii to buy their 50 to 150 kWh Li-ion storage solutions so we can use Bii’s battery management software and sell it to our C&I customers. The Bii team has successfully accomplished its Phase 1 objectives and demonstrated proof of concept. This provides a strong foundation for exciting development and demonstration during Phase 2. Development will accelerate during Phase 2 and continue during the commercialization phase. Bii is ready to put together a great team of staff, partners, and investors.« less

Authors:
ORCiD logo [1];  [2]
  1. Battery Informatics, Inc., Seattle, WA (United States). Clean Energy Inst.
  2. Univ. of Washington, Seattle, WA (United States)
Publication Date:
Research Org.:
Battery Informatics, Inc., Seattle, WA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Building Technologies Office (EE-5B); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1427730
Report Number(s):
SBIR Final Report for DE-SC0017794
DOE Contract Number:  
SC0017794
Type / Phase:
SBIR (Phase I)
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 14 SOLAR ENERGY; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; battery management; building energy management; battery storage; energy storage; solar energy storage

Citation Formats

Frogner, Bjorn, and Contreras, Jesus. Integration of Battery Modeling with Solar Building Energy Storage. United States: N. p., 2018. Web.
Frogner, Bjorn, & Contreras, Jesus. Integration of Battery Modeling with Solar Building Energy Storage. United States.
Frogner, Bjorn, and Contreras, Jesus. Wed . "Integration of Battery Modeling with Solar Building Energy Storage". United States.
@article{osti_1427730,
title = {Integration of Battery Modeling with Solar Building Energy Storage},
author = {Frogner, Bjorn and Contreras, Jesus},
abstractNote = {Battery Informatics, Inc (Bii) has completed a Phase 1 SBIR project funded by DOE for integration of battery modeling with solar storage for energy management of buildings. Bii has shown the potential of doubling the lifetime throughput of Li-Iron-Phosphate batteries with the result that the levelized cost of storage (LCOS) may be reduced by 50% reaching a level of 5 to 8 cents per kWh. These improvements are achieved by reformulating standard battery operating constraints into marginal costs and then optimizing the trade-off between application benefits versus battery degradation. These batteries will normally operate with a smaller discharge window except when there is a valuable reason to go to deep discharge. Improved battery management can benefit a broad range of markets. There are three major markets of interest to Bii: a) solar + storage for C&I buildings where time shifting, reduced demand charges, and arbitrage are important, b) grid + storage where frequency regulation and ancillary services are the focus, and c) residential buildings where time-shifting and power backup are important. Bii is mostly focused on C&I buildings because tight integration of models of energy consumption with battery degradation models will result in significant savings by using software that can exploit all opportunities for optimization. By integrating solar + building + grid + storage, we have the ingredients for dispatchable renewable energy based on one-day ahead planning to deliver promised amounts of energy at firm times. Once this is made cost-effective, automated, and demonstrated, it will make the renewable energy more valuable. It will also make the building owner both a producer and consumer of energy resulting in a net cost reduction in the monthly utility bill. Our battery management may be able to deliver two times the value produced by our competitors plus 10% reduction in energy costs. Our improvements are achieved with no reduction in battery safety, violation of supplier warranty, or any physical changes to the batteries. Most of the improvements are implemented in the higher-level applications that control the batteries. Using the software developed by Bii, a wide range of applications can benefit from these improvements. For example, Bii is in discussions with an Energy Storage System (ESS) company for Bii to do battery testing for them and for Bii to buy their 50 to 150 kWh Li-ion storage solutions so we can use Bii’s battery management software and sell it to our C&I customers. The Bii team has successfully accomplished its Phase 1 objectives and demonstrated proof of concept. This provides a strong foundation for exciting development and demonstration during Phase 2. Development will accelerate during Phase 2 and continue during the commercialization phase. Bii is ready to put together a great team of staff, partners, and investors.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {3}
}

Technical Report:
This technical report may be released as soon as March 22, 2022
Other availability
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