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SPACEX ALUM SECURES $22M FOR ROCKET ENGINE GEOTHERMAL TECH

INDUSTRY DESK1 MIN READ
WED, JUN 17, 2026

■ AI-SUMMARIZED FROM 1 SOURCE ▸ TIMELINE

Critical Energy, founded by a former SpaceX engineer, has raised $22 million to repurpose rocket engines as geothermal power plants. The startup aims to deploy 300 GW of annual capacity by 2045.

Critical Energy is leveraging aerospace technology to address energy infrastructure gaps. The company's approach converts rocket engine designs into geothermal drilling and power generation systems, combining high-temperature expertise from space applications with terrestrial energy needs. Geothermal energy provides consistent baseload power with minimal environmental footprint. By adapting proven rocket technology, Critical Energy bypasses traditional drilling constraints that have limited geothermal expansion. The $22 million funding round positions the startup to advance prototype development and pilot projects. A 300 GW annual capacity target by 2045 would represent substantial growth from current U.S. geothermal output of roughly 4 GW. The effort reflects broader industry trends applying aerospace innovations to climate and energy challenges. Geothermal remains an underutilized renewable resource, particularly in regions with favorable geology.

■ SOURCES

TechCrunch

■ SUMMARY WRITTEN BY AI FROM THE LINKS ABOVE

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