Tesla to Purchase Power from KKR-Backed Arizona Solar and Storage Project

Tesla Inc. (TSLA) has entered into a long-term agreement to buy electricity from a large-scale solar and battery storage project in Arizona, securing a significant source of renewable energy for its operations. The deal, announced Tuesday by developer ContourGlobal, marks the first power purchase agreement (PPA) between the two companies.

Agreement Details

Under the terms of the PPA, Tesla will purchase 90% of the output from Project Sterling, a facility backed by investment firm KKR & Co. The project, which ContourGlobal acquired in late 2024, is scheduled to commence operations in 2028. Financial terms of the agreement were not disclosed.

Key specifications of the Project Sterling facility include:

• Peak solar generation: 509 megawatts (MW)
• Battery storage: 360 MW with a four-hour duration

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ContourGlobal stated that it will independently trade the remaining 10% of the project's output. Power purchase agreements of this nature typically span 10 to 15 years, providing long-term price certainty for buyers.

Market Context and Significance

Project Sterling is set to become the largest renewable asset in ContourGlobal's portfolio. The facility will connect to the grid managed by the Western Area Power Administration, which provides access to the key California electricity market. This move allows Tesla to lock in energy costs amid a backdrop of rising prices.

According to data from the U.S. Energy Information Administration, average consumer electricity prices are projected to increase by 4.3% this year, reaching a record 14.22 cents per kilowatt-hour. By securing a long-term supply of renewable power, corporations like Tesla can mitigate exposure to volatile energy markets while advancing their sustainability objectives.