In Cornwall, the UK’s first-ever geothermal power plant has just put pen to paper on a 10-year deal to sell its supply of electricity to 10,000 local homes.
The plant creates power by mixing water down two wells, one of which is three miles deep, that pass through the Porthtowan fault zone and the red hot water and granite rocks within.
The United Downs Deep Geothermal Power Project was funded throughout the 2010s by a mixture of private and public…

