Volts
Volts
David Roberts
What's the deal with closed-loop geothermal?
1 hour 5 minutes Posted Jan 9, 2026 at 5:02 pm.
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Show notes

Conventional geothermal energy is limited to specific hot spots, but “closed-loop” geothermal, by going deeper and confining water to sealed boreholes, promises to work almost anywhere; it amounts to building a giant radiator, deep underground. I’m joined by Jeanine Vany and Mark Fitzgerald of pioneering closed-loop startup Eavor to discuss their newly operational plant in Germany and the many advantages of a system that requires no fracking and consumes no water.



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