Renewables company Enel Green Power North America has signed three capacity storage agreements (CSA) with US utility Pacific Gas and Electric (PG&E) for a total capacity of 85MW/340MWh.
Under the three deals, the company will be responsible for the development of the 50MW Kingston, 25MW Cascade, and 10MW Sierra stand-alone lithium-ion energy storage projects in California, US.
The facilities will be connected directly to the power grid of the US utility and will charge the lithium-ion batteries during an abundance of renewable power generation.
Energy stored in the batteries will be delivered back to the PG&E grid during times of peak electricity demand, increasing grid reliability while reducing congestion.
Located across Central and Northern California, the three systems are developed with Sovereign Energy Storage, an independent developer of large-scale utility battery energy storage projects.
Depending on pending reviews and approvals by the California Public Utility Commission, in addition to local and regulatory agencies, the energy storage projects are expected to be operational by 2023.
Enel Global Thermal Generation head Enrico Viale said: “The signing of these agreements marks an important step forward in our group’s plan to strengthen its presence in the energy storage market and expand this business in the US, and California in particular, which are at the forefront in the development of this market.
“Utility-scale storage applications are a key focus area for Enel in view of the great benefits they offer in terms of grid balancing and reliability.”