Tesla agrees to buy 90% of 509 MW Arizona solar-storage project

Tesla has signed a long-term power purchase agreement for the majority of output from Project Sterling, a 509 MW solar and 360 MW battery facility in Arizona expected to begin operations in 2028.

First covered Jul 28, 2026 · 8:32 AM PT · 1 article

Tesla agrees to buy 90% of 509 MW Arizona solar-storage project — Image via electrek.co

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5h Electrek Tesla buys 90% of a 509 MW Arizona solar and storage project — 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.

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Appeared in: 2026-07-28 (#4)

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Tesla agrees to buy 90% of 509 MW Arizona solar-storage project

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