GreenFire Energy demonstrates energy production from idle geothermal wells in The Geysers

Carlo Cariaga | Source: Think Geo Energy | Posted 05/13/2025

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GreenFire Energy has announced the successful launch of its first commercial next-gen geothermal demonstration project at The Geysers, the world’s largest geothermal field, at a site operated by Geysers Power Company, LLC, a wholly owned indirect subsidiary of Calpine Corporation.

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GreenFire Energy has successfully launched its first commercial next-generation geothermal demonstration project at The Geysers, the largest geothermal field globally. The project, operated by Geysers Power Company, LLC, has shown promising early test results using an existing geothermal well, indicating a significant improvement in geothermal recovery efficiency. This advancement highlights GreenFire Energy's capability to enhance power output in mature geothermal fields.

The system, which has been installed in a low-output well nearing idle status, is now operational, achieving sustained flow rates of 300-350 gpm and high output temperatures of 310 F. By optimizing heat recovery through natural convection and maintaining a closed-loop flow, the project aims to unlock more power from existing well infrastructure while preserving reservoir water mass. With ongoing tests validating performance across various conditions, this California Energy Commission-funded project is set to conclude in June, showcasing a promising path for the future of geothermal energy.

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GreenFire Energy demonstrates energy production from idle geothermal wells in The Geysers

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