Earth's Heat Powers UK Homes
Thursday, 2026/03/05136 words2 minutes705 reads
The United Kingdom has successfully activated its first geothermal power plant near Truro in Cornwall. After nearly two decades of development, the facility now generates electricity using heat from deep underground.
Geothermal Engineering Ltd drilled the deepest onshore well in the UK, reaching three miles below the surface where temperatures reach nearly 200°C. Water circulates through fractures in granite rocks, collecting heat that drives turbines to produce electricity for approximately 10,000 homes.
Unlike wind and solar energy, geothermal power provides constant electricity without interruption. The project cost £50 million, funded by private investors and the European Development Fund. Additionally, the plant extracts lithium carbonate from underground fluid, making it the UK's first domestic source of this critical mineral used in electric vehicle batteries. The company plans to expand production from 100 tonnes to 18,000 tonnes annually.
