Ex-SpaceX engineer raises $22M for modular geothermal to power AI

What happened?

Critical Energy, a Los Angeles-based startup founded by a former SpaceX engineer, has announced the closing of a $22 million funding round. The company develops modular geothermal turbines that aim to overcome the traditional bottleneck of geothermal energy: the transition from well to turbine. According to The Next Web, the company seeks to provide carbon-free baseload power to fuel the growing demand of AI data centers. The round, likely a Series A, will allow Critical Energy to build a prototype and move toward commercialization. The founder, whose name has not been disclosed, worked on rocket propulsion at SpaceX, where efficiency and modularity are prioritized, lending technical credibility to the project.

Why is it important?

Artificial intelligence requires enormous amounts of continuous energy. Renewable sources like solar and wind are intermittent: they don't generate electricity at night or without wind. Geothermal, on the other hand, offers constant 24/7 power, but has so far been expensive and geographically limited. Critical Energy's proposal for modular, scalable turbines could reduce costs and expand access to this clean source, key to AI sustainability. According to Goldman Sachs, the energy market for AI data centers could reach 100 GW by 2030, representing a massive opportunity for baseload technologies like geothermal. If Critical Energy succeeds, data centers could be located in regions with geothermal potential, reducing their carbon footprint and easing pressure on power grids.

Context and background

Traditional geothermal requires drilling deep wells and building large steam plants, limiting its viability to volcanic or tectonically active areas. Companies like Fervo Energy have innovated in drilling using oil and gas industry techniques, reducing costs and timelines. However, the bottleneck has shifted to the turbine: conventional geothermal power conversion systems are large, expensive, and difficult to scale. Critical Energy is betting on a compact design, similar to how modular solar panels democratized solar energy. Investor backing and the founder's experience at SpaceX (where efficiency and modularity are prioritized) lend technical credibility. The company claims its modular turbine can reduce the levelized cost of geothermal energy by 30-50%, making it competitive with natural gas and solar-plus-storage.

Consequences for the sector

If Critical Energy succeeds, AI data centers could be located in regions with geothermal potential, reducing their carbon footprint. This would also ease pressure on power grids and accelerate sustainable AI adoption. However, the technology is still in early stages and will need to demonstrate commercial viability at scale. Competitors like Eavor (with its closed-loop system) and Quaise (using millimeter waves to drill deeper) are also developing alternative approaches. The race for geothermal for AI is intensifying, and Critical Energy will need to show concrete results. Additionally, other startups like Oklo (nuclear fission) and Helion (fusion) are seeking clean, constant power solutions, so modular geothermal could be one of the first to reach commercial scale if Critical Energy executes its plan well.

What readers should know

• The $22M round is a Series A (unspecified) that will allow Critical Energy to build a prototype.
• The founder, whose name has not been disclosed, worked on rocket propulsion at SpaceX.
• The company claims its modular turbine can reduce the levelized cost of geothermal energy by 30-50%.
• The energy market for AI data centers could reach 100 GW by 2030, according to Goldman Sachs.
• Traditional geothermal requires specific geological conditions; modular turbines could expand viable locations.
• Investor backing has not been detailed, but the founder's SpaceX experience is a differentiating factor.

"The bottleneck in geothermal has moved from the well to the turbine. We are solving it with a modular design that anyone can install." — Critical Energy founder (statement to The Next Web).

The news reflects a broader trend: the fusion of the energy and tech industries to meet AI's needs. Other startups like Oklo (nuclear fission) or Helion (fusion) are also seeking clean, constant power solutions. Modular geothermal could be one of the first to reach commercial scale if Critical Energy executes its plan well. However, regulatory, drilling, and grid integration challenges remain significant. Critical Energy's success will depend on its ability to demonstrate the reliability and cost of its technology in a real-world setting.