Is geothermal energy on the cusp of a worldwide renaissance?
New Scientist
February 26, 2026
AI-Generated Deep Dive Summary
The UK’s first geothermal power plant in Cornwall marks a significant milestone in the global resurgence of geothermal energy. This renewable resource is gaining traction due to advancements in drilling technology and increasing demand for consistent, clean energy sources. Unlike intermittent wind and solar power, geothermal provides reliable electricity around the clock, with faster construction timelines and less environmental impact compared to nuclear or hydropower.
The United Downs plant, led by Geothermal Engineering Ltd., generates 3 megawatts of electricity while also producing lithium—a critical component for electric vehicle batteries. This dual benefit has made the project more financially viable, attracting £30 million in private equity investment. The facility draws heat from deep underground, where radioactive decay raises water temperatures to over 190°C. This hot water is pumped to the surface, generating steam to drive turbines and produce electricity. Additionally, lithium-rich fluids are extracted, filtered, and processed to yield up to 2000 tonnes of lithium carbonate annually.
The geothermal industry is poised for growth, with potential to meet up to 15% of global electricity demand by 2050, according to the International Energy Agency. Technological innovations from oil and gas fracturing are making deeper geothermal projects more feasible, reducing costs and expanding opportunities in regions with untapped potential. Countries like Hungary, Poland, and France are particularly well-positioned due to their accessible hot water reservoirs, which could provide affordable geothermal energy comparable to fossil fuels.
This renaissance in geothermal energy is crucial for divers
Verticals
science
Originally published on New Scientist on 2/26/2026