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Story summary
- Centaurus Capital, Doerr’s family office, and Gates’ firm led a $135 million Series B for Mazama Energy.
- Mazama drills into extremely hot rock and circulates water to generate carbon-free electricity.
- Its 2025 Oregon pilot hit 629 °F, the hottest engineered geothermal system, with 10 GW capacity.
- CEO Sriram Vasantharajan said the proof of concept attracted top investors and shows a clear commercialization path.
