California continues to lead the nation in energy storage deployment. The California Energy Commission (CEC) has released an updated Energy Storage System Survey, showing installed battery storage capacity has grown from just 500 MW in 2018 to 16,942 MW as of July 31, 2025. This represents approximately 33% progress toward California's projected need of 52,000 MW of energy storage by 2045.
Today's installed capacity includes:
- 13,880 MW of utility-scale energy storage
- 2,213 MW of residential energy storage
- 849 MW of commercial energy storage
Energy storage continues to play a vital role in supporting California's electric grid by storing excess renewable energy for use during periods of peak demand, improving reliability, and helping advance the state's clean energy goals. Explore the California Energy Commission's interactive dashboard to view the latest statewide deployment data and trends.
As the voice for California’s energy storage sector, CESA is proud to advocate for policies and market structures that
support this exponential growth. But we can’t do it alone.
If your company is already a CESA member, we encourage you to invite colleagues and peer companies in the storage sector to join the Alliance. A stronger coalition strengthens our ability to shape the future of clean, reliable energy in California.
Together, we can power California’s path to 100% clean energy.
