Fervo Energy and Google have signed a power purchase agreement that stands as the largest enhanced geothermal power deal announced to date. Announced on September 1, 2026, the agreement commits Google to purchasing 396 megawatts of electricity from Fervo’s Cape Station project in Utah, which is expected to begin operations in 2028. The transaction also includes an option for Google to expand its offtake by approximately 600 megawatts, bringing the potential total to nearly one gigawatt.
A Landmark Clean Energy Agreement
The deal expands the relationship between Fervo and Google and reinforces enhanced geothermal systems as a viable source of firm, round-the-clock power. Fervo described the agreement as part of a repeatable commercial model that can deliver clean electricity directly to large energy users. Google highlighted the project’s potential to drive local economic benefit and make enhanced geothermal more affordable over time.
Expanding Cape Station and Unlocking Geothermal Potential
Cape Station is being developed beyond its initial 100 megawatt first phase as Fervo scales standardized and modular power delivery. The site is permitted for up to 2 gigawatts of geothermal capacity, while a third-party engineer has estimated that it holds enough heat to generate twice that amount. If fully developed, the project could significantly expand the United States’ existing geothermal generating capacity, which remains a small share of the national electricity mix.
Meeting Data Center Power Demand Sustainably
Google and other hyperscale companies are seeking new sources of electricity to support growing digital infrastructure and artificial intelligence workloads. The Fervo agreement provides Google with around-the-clock carbon-free energy that can help balance its sustainability commitments, especially after the company added natural gas capacity in Texas earlier this year. Enhanced geothermal power offers a steady output profile that complements variable renewable sources such as wind and solar.
Community Principles and Regulatory Pathway
Fervo and Google said the agreement would unlock new electricity capacity at no cost to existing ratepayers. The companies also emphasized transparency, two-way dialogue with communities, and sustained local investment as core principles of their development approach. Subject to regulatory approvals in Utah, the partnership may use direct-to-load contracting options under state law, providing flexibility for serving data center operations.
Technology and Industry Implications
Enhanced geothermal technologies developed by Fervo access deeper heat resources than conventional geothermal plants, expanding where clean firm power can be produced. A recent U.S. Department of Energy report estimated that these methods could eventually unlock up to 57 terawatts of electricity nationwide. That potential has drawn attention from utilities, policymakers, and technology companies looking for reliable alternatives to fossil fuels.
Market Response and Long-Term Partnership
Fervo and Google have worked together for more than five years, and Google purchased some of Fervo’s first geothermal electrons before investing in the startup’s final private funding round. News of the power purchase agreement drove Fervo’s stock up about 30 percent before traders took some profits the following day, according to media reports. The market reaction reflects growing investor interest in enhanced geothermal as a scalable clean energy solution.
The agreement between Fervo Energy and Google marks a meaningful step toward commercializing enhanced geothermal power at a scale relevant to major data center operators. By pairing a flexible purchasing framework with modular project execution, the partnership could accelerate the delivery of clean firm power while supporting local economic development. As electricity demand from advanced computing continues to rise, deals like this may help shape the next phase of carbon-free energy infrastructure in the United States.