The UK has begun generating electricity from its first deep geothermal power site, marking a significant step in renewable energy development. Located in Cornwall, the facility uses naturally heated water from deep underground to produce a constant supply of low-carbon electricity.
Developed by Geothermal Engineering Ltd after many years of work, the project involved drilling several miles beneath the surface to reach temperatures close to 200°C. This heat is harnessed by circulating water through fractured granite, allowing it to power turbines. Unlike wind or solar, the system provides continuous energy and is expected to supply around 10,000 homes.
In addition to electricity, the site will also extract lithium from underground fluids, offering a new domestic source of a mineral essential for batteries and green technologies. Although current output is modest, there are plans to expand production significantly in the future as demand grows.
Experts have described the project as a major milestone but caution that high upfront costs may limit wider rollout. Industry leaders are calling for stronger government backing to support further development. While similar opportunities exist in other parts of the UK, progress will depend on investment, policy support and overcoming environmental and financial challenges.
