Explore the largest battery storage projects in CAISO and see all the utility-scale battery storage projects in CAISO on a map.
Last updated: September 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 September 2026, there are 275 utility-scale battery storage projects in CAISO, according to Cleanview's project tracker. Their total operating capacity is 17,093 MW. In 2025, there were 53 battery storage projects built in CAISO. See also: planned battery storage projects in CAISO→
Total Battery Storage Projects
275
Total Capacity
17,093 MW
Built in 2025
53
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: June 2026
Location: Riverside, California
Developer: Intersect Power
350 MW
Year Operational: October 2022
Location: Riverside, California
325 MW
Year Operational: July 2023
Location: Riverside, California
300 MW
Year Operational: June 2026
Location: San Diego, California
Developer: Arevon
300 MW
Year Operational: October 2025
Location: La Paz, Arizona
Developer: TransGrid Energy
80 MW
Year Operational: July 2026
Location: Kern, California
Developer: Calpine
75 MW
Year Operational: July 2026
Location: San Bernardino, California
Developer: Avantus
51 MW
Year Operational: July 2026
Location: Tulare, California
Developer: Vistra
50 MW
Year Operational: July 2026
Location: San Bernardino, California
Developer: Avantus
10 MW
Year Operational: July 2026
Location: Santa Barbara, California
Developer: Painter Energy
1 MW
Year Operational: July 2026
Location: Los Angeles, California
Developer: Generate Capital
350 MW
Year Operational: June 2026
Location: Riverside, California
Developer: Intersect Power
300 MW
Year Operational: June 2026
Location: San Diego, California
Developer: Arevon
50 MW
Year Operational: June 2026
Location: San Diego, California
Developer: Wellhead
Cleanview