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Fervo's Utah geothermal plant starts selling power, using oil-field tricks
Cape Station's first phase began selling electricity in late September, and Google has agreed to buy at least 396 megawatts.
Deep underground, the rock is hot all the time: day and night, summer and winter, wind or no wind. Old-style geothermal power needs a lucky spot where that heat already comes with hot water flowing through it, which has kept it stuck in a few places. Enhanced geothermal tries to make its own luck.
Fervo Energy, founded in 2017 in Houston, borrows from the oil industry: its drilling and fracking techniques (fracking means pushing fluid down to crack open paths through rock). Fervo uses them to open channels through hot rock, so it does not need a site where hot water already flows. Think of it as building your own hot spring instead of hunting for one.
MIT Technology Review reported on Oct 6 that the first phase of Fervo's Cape Station in southwestern Utah began selling power in late September. Also in September, Google agreed to buy at least 396 megawatts from Cape Station to fuel a potential data center in Utah, part of a broader Google deal covering up to 3 gigawatts of enhanced geothermal through 2033. (A megawatt is a million watts; a gigawatt is a thousand megawatts.)
The numbers to watch are costs. Fervo's target is about $7,000 per kilowatt of capacity for the first 100 megawatts, about $5,500 per kilowatt for the next 400 megawatts, and a long-term goal of $3,000. The bet is that building the same thing again and again makes each copy cheaper, which is why Fervo has a standard unit, the "GeoBlock," of about 50 megawatts. The company went public in May 2026, raising roughly $2.2 billion, and expects the whole plant in full commercial operation in 2028.
The caveat comes from an outside expert quoted in the article, who said a success in Utah "doesn't mean this tech will easily carry over to another part of the country." A method that works in one patch of rock still has to prove itself in others.
Read the original at MIT Technology Review →