Explore the largest battery storage projects in CAISO and see all the utility-scale battery storage projects in CAISO on a map.
Last updated: May 2026
On this page, you can explore our real-time database of battery storage projects in CAISO. Each month, we track battery storage projects and update our list of the largest battery storage projects in CAISO.
As of May 2026, there are 254 utility-scale battery storage projects in CAISO, according to Cleanview's project tracker. Their total operating capacity is 15,906 MW. In 2025, there were 50 battery storage projects built in CAISO. See also: planned battery storage projects in CAISO→
Total Battery Storage Projects
254
Total Capacity
15,906 MW
Built in 2025
50
Map of battery storage projects in CAISO. Marker size reflects capacity — only facilities with reported capacity data are shown.
680 MW
Year Operational: July 2025
Location: Riverside, California
Developer: Calpine
500 MW
Year Operational: December 2025
Location: Kern, California
Developer: AES Clean Energy
450 MW
Year Operational: June 2023
Location: Monterey, California
400 MW
Year Operational: August 2025
Location: San Joaquin, California
Developer: NextEra Energy
350 MW
Year Operational: October 2022
Location: Riverside, California
325 MW
Year Operational: July 2023
Location: Riverside, California
300 MW
Year Operational: October 2025
Location: La Paz, Arizona
Developer: TransGrid Energy
279 MW
Year Operational: June 2025
Location: Clark, Nevada
Developer: Silver Peak
250 MW
Year Operational: July 2020
Location: San Diego, California
80 MW
Year Operational: March 2026
Location: Tulare, California
Developer: Ormat Technologies
75 MW
Year Operational: March 2026
Location: Santa Clara, California
Developer: esVolta
50 MW
Year Operational: March 2026
Location: San Diego, California
Developer: RWE
1 MW
Year Operational: March 2026
Location: San Joaquin, California
1 MW
Year Operational: March 2026
Location: Merced, California
Developer: ZG
2 MW
Year Operational: February 2026
Location: San Joaquin, California
Developer: Prologis Logistics Services
10 MW
Year Operational: January 2026
Location: San Diego, California
Developer: San Diego Gas & Electric
1 MW
Year Operational: January 2026
Location: Shasta, California
Developer: TotalEnergies
500 MW
Year Operational: December 2025
Location: Kern, California
Developer: AES Clean Energy
Cleanview