Black Walnut Energy Storage LLC

Santa Paula, California

Capacity: 15 MW
Status: Operating
Fuel: Battery storage
Technology: Batteries
Operator: Black Walnut Energy Storage LLC
City: Santa Paula
County: Ventura County
State: California
Operational date: October 2025
Balancing authority: CISO

Black Walnut Energy Storage LLC is a 15 MW battery storage power plant in Santa Paula, California. Operated by Black Walnut Energy Storage LLC, it has been operating since 2025. The facility is located in Ventura County, within the CISO balancing authority.

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