Southern California Edison ramps up battery storage portfolio

by Michael Green
'Battery storage playing key climate role' - William Walsh. Photo: SCE
Southern California Edison (SCE) is planning to add a further 590MW of battery storage capacity to the utility’s clean energy portfolio.

SCE has signed long-term contracts for the additional storage, which increases its total amount of installed and procured battery storage capacity to around 2,050MW.

Three of the four projects, totalling 585MW, are utility-scale lithium-ion battery storage projects. The fourth is a 5MW demand response behind-the-meter contract that will use energy from customer-owned energy storage.

The projects, which are subject to approval by the California Public Utilities Commission, are expected to come online by August 2022 and 2023. 

'Key role'

SCE vice-president of energy procurement & management, William Walsh, said: "Bringing more utility-scale battery storage resources online will improve the reliability of the grid and further the integration of renewable generation resources, like wind and solar, into the grid.”

"As California transitions to 100% clean renewable energy to reduce the greenhouse gas emissions that are driving climate change, battery storage will play a key role in harnessing the value of these cost-effective, carbon-free resources in a reliable manner.”

SCE estimates that Southern California needs to add 30GW of utility-scale storage to the grid and 10GW of storage from distributed energy resources to meet the state’s clean energy and carbon neutrality goals.

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