Key Takeaways
- EDP Renewables North America and Redwood Coast Energy Authority completed the 92 MW / 368 MWh Sandrini Energy Storage project in Kern County, California.
- The battery system can power the equivalent of more than 22,000 California homes.
- It is co-located with the 300 MW Sandrini Solar site, from which Redwood Coast Energy Authority purchases 100 MW.
- Redwood Coast Energy Authority holds an energy storage service agreement for 100% of the battery’s capacity.
- The project is expected to generate more than $5 million in revenue supporting local schools, roads and emergency services.
EDP Renewables North America and Redwood Coast Energy Authority have completed Sandrini Energy Storage, a 92 megawatt / 368 megawatt-hour battery system in Kern County, California. Announced on August 18, 2026, the project can supply the equivalent of more than 22,000 California homes and sits alongside an existing solar site, adding stored capacity that can be dispatched when demand peaks.
A Battery Beside an Existing Solar Site
Sandrini Energy Storage is co-located with the 300 MW Sandrini Solar energy site, from which Redwood Coast Energy Authority buys 100 MW of output. Pairing the battery with solar lets the pair store daytime generation and release it later, smoothing supply and helping deliver renewable power when it is most needed. At 368 megawatt-hours across 92 megawatts, the system offers roughly four hours of storage duration.
What Redwood Coast Energy Authority Gets
Redwood Coast Energy Authority, a community choice aggregator, holds an energy storage service agreement covering 100% of the battery’s capacity. Beyond grid services, the project is expected to generate more than $5 million in revenue supporting local public services and infrastructure, including schools, roads, emergency services and equipment in the host community.
“The addition of the Sandrini Energy Storage project to our portfolio supports RCEA’s goals of building new, clean capacity that matches our customers’ energy needs and enhances the generation delivered by Sandrini Solar, while also supporting grid reliability,” said Beth Burks, Executive Director of Redwood Coast Energy Authority.
EDP Renewables and California’s Grid Goals
The completion adds to California’s growing base of utility-scale battery storage, which grid operators are leaning on to firm up variable solar and wind generation after sunset.
“Sandrini Energy Storage represents an important investment in California’s energy future. Energy storage transforms renewable power into reliable, around-the-clock electricity, ensuring clean energy is available when demand is highest,” said Sandhya Ganapathy, CEO of EDP Renewables North America.
