The US Department of Energy (DOE) defines enhanced geothermal systems (EGS) as a process that creates human-made underground reservoirs by injecting fluid deep underground into naturally heated rock that otherwise lacks the fluid flow needed to bring geothermal energy to the surfaceCITE:E1. Because EGS manufactures its own reservoir, it does not depend on the naturally occurring hot-water systems that limit where conventional geothermal plants can be builtCITE:E1.
Fervo Energy's Project Red in Nevada has produced multiple years of operating data showing enhanced geothermal can function as continuous baseload powerCITE:E2. In July 2023, Fervo announced that well testing at Project Red achieved a flow rate of 63 liters per second at 191°C, enabling 3.5 MW of electric production — the first time EGS reached this scaleCITE:E3. By April 2026, Fervo reported that Project Red had operated for more than 614 days on production and, outside of scheduled events, ran with 98.4% uptime, which the company contrasted with the intermittency of solar and wind generationCITE:E2.
Google announced on November 28, 2023, that its Nevada geothermal project built with Fervo had become operational, with carbon-free electricity flowing onto the local grid that serves its data centersCITE:E4. Google described the agreement as the world's first enterprise-scale procurement deal for EGS powerCITE:E4.
Fervo broke ground in September 2023 on Cape Station in Utah, which the company describes as the "world's largest next-gen geothermal project," planned to deliver 400 MW of round-the-clock, carbon-free electricityCITE:E5. Fervo said Cape Station is scheduled to begin delivering power to the grid in 2026 and reach full-scale production in 2028CITE:E5. On September 1, 2026, Fervo and Google signed what the companies called the "world's largest enhanced geothermal PPA to date" — a 396 MW agreement under which Google will purchase carbon-free energy from Cape Station designed as a foundational building block for a potential data center in Utah, expected to come online in 2028CITE:E7.
| Milestone | Entity | Value | Status | Date |
|---|---|---|---|---|
| Project Red well test | Fervo Energy | 63 L/s at 191°C, enabling 3.5 MW | Achieved | Jul 2023 |
| Project Red uptime record | Fervo Energy | 614+ days online, 98.4% uptime | Achieved | Apr 2026 |
| Nevada project with Google | Google / Fervo Energy | First enterprise-scale EGS procurement | Operational | Nov 2023 |
| Cape Station capacity | Fervo Energy | 400 MW planned | Grid power from 2026, full scale 2028 | Sep 2023 (announced) |
| Google–Fervo PPA | Fervo Energy / Google | 396 MW | Signed, online expected 2028 | Sep 1, 2026 |
| Enhanced Geothermal Shot target | US DOE | Cut cost 90% to $45/MWh | Policy target for 2035 | Sep 2022 (announced) |
The US DOE launched its Enhanced Geothermal Shot in September 2022, setting a target to cut EGS costs by 90% to $45 per megawatt-hour by 2035CITE:E6.
The record laid out above traces a single timeline: a 2023 well test proving 3.5 MW of productionCITE:E3, two years of 98.4%-uptime data validating reliabilityCITE:E2, Google's first enterprise-scale procurement deal going live that same yearCITE:E4, and now a 396 MW PPA sized for a future Utah data center running alongside Fervo's larger 400 MW Cape Station buildoutCITE:E5CITE:E7. That commercial expansion is proceeding in parallel with, not after, the DOE's 2035 target of $45/MWh — a cost figure that remains a policy goal rather than a price disclosed in any of Fervo's or Google's announcements to dateCITE:E6.
The US Department of Energy (DOE) defines enhanced geothermal systems (EGS) as a process that creates human-made underground reservoirs by injecting fluid deep …
Fervo Energy's Project Red in Nevada has produced multiple years of operating data showing enhanced geothermal can function as continuous baseload powerCITE:E2.
Google announced on November 28, 2023, that its Nevada geothermal project built with Fervo had become operational, with carbon-free electricity flowing onto the…
Fervo broke ground in September 2023 on Cape Station in Utah, which the company describes as the "world's largest next-gen geothermal project," planned to deliv…
The sequence here is capacity scaling in step with reliability data, not ahead of it. Fervo's own operating record — 614+ days at 98.4% uptime on a well that first proved out at 3.5 MW — is what let Google go from a first-of-its-kind procurement deal in 2023 to anchoring a potential Utah data center with a 396 MW PPA by 2026. What the evidence doesn't yet show is cost: the DOE's $45/MWh-by-2035 figure is a policy target, not a price either company has disclosed. The number worth tracking next is whether Cape Station's 2026 grid connection and 2028 full-scale ramp come with an actual delivered price — that's the missing data point that would tell us if EGS economics are catching up to its now-demonstrated reliability.
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