Power provider Southern California Edison has signed seven contracts totalling 770MW of battery-based energy storage capacity to deliver security of supply to California, US.
The projects will help integrate renewable power into the grid from intermittent wind and solar resources.
Most of the projects selected are co-located with renewables and will be located at the same point of interconnection.
Last year, the California Public Utilities Commission identified potential reliability issues caused by the retirement of aging natural gas plants, the increasing levels of solar and wind power energy and shifts in peak time power.
The biggest system will be NextEra Energy Resources’ 230MW ESS at its McCoy project in Riverside County, California, which includes 250MW of PV solar power. The company aims to deploy a total of three projects with a combined capacity of 460MW.