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The California Independent System Operator (CAISO), which relies primarily on solar, has experienced rolling blackouts this past year due to shortage of generation. Will the trends in California for longer duration storage serve as a harbinger for the rest of the country?
In this new paper, our experts look at the main supply trends in California, including an unprecedented increase in battery energy storage—primarily consisting of 4-hour storage. As extreme weather events continue to batter the state, 4-hour storage may fall significantly short of what's needed in the near future.
Read on for an in-depth look at:
- Current assumptions that 4-hour storage provides full resource adequacy (RA) credit
- How soon CAISO will start needing long-duration (six hours or longer) storage or risk facing serious reliability challenges
- The rapidly disappearing lead time for battery energy storage to be extended from four to eight hours
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