By ESS news
Independent energy producer Clearway Energy has flipped the switch on the 147 MW Rosamond Central Battery Energy Storage System (BESS) in Kern County, California. The project represents Clearway’s latest investment in its nearly 850 MW BESS portfolio in operations and construction.
Rosamond Central BESS consists of lithium-ion batteries with a battery life of four hours and is located next to Clearway’s 192 MW Rosamond Central solar farm, which was completed in 2020. At the time, the owner-operator applauded the project partners for completing the solar project “in a year with countless headwinds.”
Now, Clearway Energy has added a large battery storage system to the PV farm at a cost of $400 million, marking its first battery retrofit project. Construction was led by Rosendin and the battery energy storage systems for the project were supplied by Wärtsila.
Rosamond Central BESS has entered into a contract with utility Southern California Edison (SCE) under a long-term resource adequacy (RA) agreement. Under the RA contracts, suppliers are required to provide “sufficient capacity and reserves for the grid operator to maintain balanced supply and demand in the electric system,” according to California Independent System Operator (ISO).
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