Tesla buys 90% of a 509 MW Arizona solar and storage project

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Tesla has signed a long-term deal to buy 90% of the output of Project Sterling, a big solar and battery plant going up in Arizona.

The project pairs 509 MW of solar with a 360 MW battery, and it’s being built by ContourGlobal, the power producer owned by private equity firm KKR. It’s expected online in 2028.