Mazama Energy Raises $135 Million to Scale the World’s Hottest Engineered Geothermal System

Khosla-backed Mazama Energy just raised $135M to drill deeper into super-hot-rock geothermal

Geothermal startup Mazama is drilling three miles underground to tap superhot rock, with one well capable of generating 15 MW of electricity 24/7.

Exclusive: Mazama Energy raises $135M for superhot geothermal

Very few startups have the war chest needed to challenge geothermal frontrunner Fervo Energy.

Mazama Energy raises $135M for superhot geothermal at Oregon volcano

The startup Mazama Energy just nabbed $135 million to accelerate its next-generation geothermal activities near Oregon’s Newberry Volcano. Mazama is seeking to generate clean electricity from superhot rocks — an emerging and largely unproven approach that could have an enormous payoff for the power sector. That’s…

Mazama Energy Raises $135 Million to Scale the World's Hottest Engineered Geothermal System

Series B led by Centaurus Capital and Doerr Capital, with ConocoPhillips, Shell Ventures, Khosla Ventures and Gates Frontier participating, enabling Mazama to push beyond 750°F and demonstrate a commercially scalable pathway to deploy superhot rock geothermal DALLAS, Sept. 17, 2026 (GLOBE NEWSWIRE) — Mazama Energy today announced $135 million in new capital to accelerate superhot […]

Mazama Energy Raises $135 Million to Scale the World’s Hottest Engineered Geothermal System

DALLAS, Sept. 17, 2026 (GLOBE NEWSWIRE) -- Mazama Energy today announced $135 million in new capital to accelerate superhot rock geothermal commercial development, including an oversubscribed Series B led by Centaurus Capital, founded by John Arnold, and Doerr Capital. ConocoPhillips…