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DOE OSTI · 1569207

Field Aging Testbed for Behind-the-Meter PV + Energy Storage

Deline, Christopher A·Jenket, Don·Sekulic, William R·Jordan, Dirk·DiOrio, Nicholas A·Smith, Kandler A
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Abstract

Small DC-coupled battery test systems are deployed at NREL to evaluate capacity fade models and report on performance parameters such as round-trip efficiency under indoor and outdoor deployment scenarios. Initial commercial battery products include LG Chem RESU Lithium-ion and Avalon vanadium-redox flow batteries. Adapting indoor lab-scale test methods to outdoor systems has challenges, including maintaining constant temperature and fully controlling batteries through standard discharge curves. Initial measurements show the Lithium Ion battery systems performing within expectation, near 85% round-trip efficiency. Initial lifetime modeling and measurements indicate battery capacity may degrade by 20%-35% over 10 years.

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25 ENERGY STORAGE33 ADVANCED PROPULSION SYSTEMSbattery test systemslithium ion batteriesvanadium-redox flow batteries

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Deline, Christopher A, Jenket, Don, Sekulic, William R, Jordan, Dirk, DiOrio, Nicholas A, Smith, Kandler A. 2019-09-26. Field Aging Testbed for Behind-the-Meter PV + Energy Storage. https://www.osti.gov/biblio/1569207

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