Iceland just demonstrated that enhanced geothermal systems can generate unlimited baseload electricity from dry hot rock with no volcanic activity required — proving geothermal is a viable primary energy source for every nation on Earth.
The Deep Enhanced Geothermal project drilled to 4.5 kilometers in non-volcanic granite bedrock and injected high-pressure water creating a hydraulic fracture network across 2 square kilometers of rock at 250 degrees Celsius. Water circulating through the fracture network emerged as steam generating 1.8 megawatts continuously — the first confirmed enhanced geothermal system operating commercially in non-volcanic geology in Europe. The system requires no naturally occurring heat source beyond the universal 25 to 30 degree temperature increase per kilometer of depth present everywhere on Earth.
Scaling this approach to a 10-kilometer depth where all rock exceeds 300 degrees Celsius requires only the millimeter-wave drilling technology already demonstrated — creating a system applicable in any country regardless of geology. Global enhanced geothermal potential is estimated at 100,000 times current global electricity consumption.
Source: Iceland GeoSurvey, European Enhanced Geothermal Systems Project, Nature Energy, 2024