Elon Musk's solar ambitions have shifted from powering homes to powering Tesla's AI era

Jul 29, 2026 07:26 AM - 1 day ago 44

About a decade ago, Tesla entered its solar-for-homes era pinch its contentious acquisition of SolarCity.

Now, Tesla's star dreams are taking a different style arsenic the institution enters its AI era.

Tesla has inked 2 semipermanent agreements to acquisition powerfulness from utility-scale star projects totaling astir 600 megawatts of planned capacity.

ContourGlobal, a world powerfulness producer, announced connected Tuesday that Tesla signed a semipermanent statement to acquisition 1 terawatt-hour of energy a twelvemonth from Project Sterling, ContourGlobal's star and artillery retention task successful Arizona. The woody covers astir 90% of the project's expected output — astir capable energy to powerfulness astir 100,000 US homes a year.

Renewable-energy developer Zelestra separately announced Tuesday that Tesla would acquisition the full output of its 140-megawatt Lumen Farm star task successful northeast Texas. Zelestra CEO Phil North said successful a connection that the task will support Tesla's "growing power needs successful Texas."

The deals bespeak Elon Musk's latest arc from leveraging star powerfulness for user homes to star usage successful business settings, which could see AI infrastructure.

Tesla's humble $2.6B star beginnings

When the CEO projected buying SolarCity, a rooftop star installer and financier, successful 2016, Musk framed the $2.6 cardinal deal arsenic a measurement to create a seamless, end-to-end solution combining star energy, artillery storage, and EVs.

"Tesla customers tin thrust cleanable cars and they tin usage our artillery packs to thief devour power much efficiently, but they still request entree to the astir sustainable power root that's available: the sun," Tesla said astatine the time.

The rooftop star business didn't disappear. Tesla said successful its first-quarter shareholder update successful April that it had begun "meaningful customer deployments" of residential star panels produced astatine its New York Gigafactory. Tesla besides continues to waste Powerwall batteries for homes.

In caller years, however, Musk has progressively focused his star ambitions connected the grid, arsenic AI is expected to thrust surging powerfulness request and Tesla stakes much of its early connected AI and robotics.

Tesla's AI stake relies connected the sun

Tesla has warned investors that information centers supporting its AI services and products will person "substantial powerfulness requirements."

The institution said successful April that it expected 2026 capex to transcend $25 cardinal arsenic it builds factories and infrastructure for projects including its Robotaxi business and the Optimus humanoid robot. Both ventures dangle connected large-scale AI training infrastructure. Tesla besides plans to build a semiconductor investigation fab arsenic portion of its agelong changeable chip manufacturing ambitions.

Musk has simultaneously been raising the stakes for business star powerfulness amid the AI boom. In a January net call, the CEO said "the star opportunity is underestimated," and that star paired pinch batteries was the "best way" to adhd much powerfulness to the grid.

During Tesla's latest net call, connected July 22, Musk said hyperscalers are struggling to unafraid capable energy for AI compute, necessitating replacement power sources.

"There's acold much powerfulness disposable from the sun than thing else, by far," Musk said. "We deliberation powerfulness constraints are going to beryllium — they already are — a awesome rumor for AI."

The 2 latest star deals make Tesla a awesome purchaser of utility-scale star power. The EV shaper has committed to purchasing astir each of Project Sterling's yearly energy output and each of Zelestra's Lumen Farm output.

ContourGlobal said commercialized operations are expected to commencement successful 2028 and that Sterling will beryllium the company's "largest renewable plus to date." Zelestra said it expects afloat operations to commencement by 2029.

Neither statement identified which Tesla operations the powerfulness purchases will precisely support. Spokespeople for ContourGlobal, Zelestra, and Tesla did not respond to requests for comment.

As Musk's broader arc successful star power has travel into focus, star is nary longer powering only homes and cars but besides the infrastructure of an AI-driven future.

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