Tesla has signed a PPA with ContourGlobal for the power generated from Project Sterling, a 509-MW solar and 1.4-GWh energy storage project in Arizona.
Land clearing at the Sterling site. Credit: ContourGlobal
Construction on Project Sterling started in 2025, through off-site physical work to meet subsidy deadlines. Commercial operation is targeted for 2028.
“Securing our biggest PPA ever … is a testament of our ability to deliver tailor-made solutions to our customer’s energy needs,” said Antonio Cammisecra, ContourGlobal CEO. “This milestone represents a remarkable achievement of our commercial team which spearheaded a company-wide effort to strike a major deal like this one.”
Located in Arizona and physically connected to the Western Area Power Administration (WAPA) grid, Project Sterling holds firm point-to-point transmission rights to access California’s CAISO and will be pseudo-tied, enabling it to serve Tesla’s needs.
News item from ContourGlobal