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Budget committee backs Clean Power SF participation in 69 MW ‘Tumbleweed’ long‑duration storage project
Summary
The Budget & Finance Committee voted to forward to the full Board a resolution authorizing Clean Power SF to join a regional long‑duration energy storage purchase for a 15‑year term not to exceed $65 million, citing compliance with a CPUC procurement order and a projected commercial operation date of June 1, 2026.
The San Francisco Board of Supervisors’ Budget and Finance Committee on March 16 voted to send to the full Board a resolution authorizing the San Francisco Public Utilities Commission’s Clean Power SF program to participate in the Tumbleweed long‑duration energy storage project through a joint powers agency called CC Power. The committee’s positive recommendation follows a staff presentation that described the project as a 69‑megawatt, 8‑hour lithium‑ion battery to be built in Rosamond, Kern County, by developer LS Power Renewables, with a guaranteed commercial operation date of June 1, 2026, and a 15‑year purchase term.
Why it matt…
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