California's expansion of battery energy storage has significantly increased the resiliency of the electrical grid against extreme heat.

LA Times: The surprising reason California survived record summer heat without blackouts "...In fact, the state has not issued a Flex Alert since 2022, and it has not implemented rotating outages since 2020. Over the last few years, California has quietly but dramatically increased the resiliency of its electrical grid through a significant expansion in battery energy storage. These batteries hold onto solar energy captured during the day, so it can be sent to the grid as demand peaks in the evening and morning, when most people are at home running air conditioners and other appliances. ..." (paywall, but gist of it is in the paragraph above). https://www.latimes.com/california/story/2026-09-11/how-california-survived-hottest-august-ever-without-flex-alerts #powergrid #climateemergency #heatwaves #CAwx

California invests big in battery energy storage — and leaves rolling blackouts behind Over the last few years, California has quietly but dramatically increased the resiliency of its electrical grid through a significant expansion in battery energy storage. https://www.latimes.com/environment/story/2025-10-17/california-made-it-through-another-summer-without-a-flex-alert