ContourGlobal signs cPPA with Tesla for 1.4 GWh hybrid solar and storage facility in Arizona

Type: Ppa · Technology: Hybrid · Country: United States · Capacity: 509 MW · Announced: 2026-07-30

International power producer ContourGlobal has signed a long-term corporate power purchase agreement (cPPA) with Tesla in the United States. Under the agreement, Tesla will purchase approximately 1 TWh of power per year, representing around 90% of the annual output from ContourGlobal’s Project Sterling hybrid solar and storage facility in Arizona. Project Sterling combines 360 MW/1.4 GWh of battery energy storage capacity with 509 MW (dc)/450 MW (ac) of solar, and is connected to Arizona’s Western Area Power Administration (WAPA) grid with firm point-to-point transmission rights to California’s CAISO grid. Commercial operation is targeted for 2028, with on-site construction due to begin later this year, following off-site construction tasks and equipment procurement initiated in 2025. This PPA is ContourGlobal's largest to date and will provide long-term renewable energy to Tesla’s Californian operations.

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