Fervo's Cape Station puts enhanced geothermal on the grid at utility scale

Serguey Asael Shinder14 October 2026, 09:322 min read

Fervo Energy's Cape Station in Beaver County, Utah, is now selling electricity from an enhanced geothermal system — which IEEE Spectrum describes as a world first for a next-generation geothermal plant of this size. The first 33 MW unit synchronised to the grid on 24 September 2026 and entered commercial operation on 1 October, with Shell Energy, a Californian electricity retailer, as the buyer. The milestone is two weeks old; IEEE Spectrum's account of the project, published this week, is the reason to look at it in detail now.

What makes it different. Conventional geothermal plants depend on naturally occurring hot water or steam. Cape Station engineers its own reservoir instead: Fervo borrows drilling methods developed for oil and gas wells to open flow paths in hot, dry rock deep underground and produces steam from water circulated through it. Fervo's senior vice president Dawn Owens told the magazine that "traditional geothermal would have never been done in southern Utah".

The build-out. The project is expected to cost $2 billion and reach 500 MW. Fervo says it is working to commission two more 33 MW power blocks by 1 January 2027; the remaining 400 MW, supported by an agreement with Google, is under construction for 2028. Before Cape Station the company ran a 3.5 MW pilot in Nevada, Project Red, online since late 2023. Fervo went public in May.

The cost question. Fervo has not disclosed the terms of its power purchase agreements, which together cover about 1,000 MW of in-progress and future development. The company previously told Canary Media that phase 1 delivers at about $7,000 per kilowatt and phase 2 should come in at $5,500/kW; IEEE Spectrum sets that against an average build cost of $2,157/kW for a gas-fired plant in 2025. Geothermal today supplies about 0.4% of US electricity generation, and experts quoted in the article point to high upfront drilling costs and regulatory barriers as the main obstacles.

Where the value might come from. Researchers cited by IEEE Spectrum suggest next-generation plants could operate flexibly — for instance in the evening, when solar output falls — rather than only as baseload, and Owens mentions behind-the-meter supply to data centres so that new capacity costs are not passed to utility customers.

Source: IEEE Spectrum, "Fervo's Cape Station Geothermal Plant Goes Live" — https://spectrum.ieee.org/fervo-cape-station-geothermal