N UK
Summary
Geothermal energy – digging for heat from deep under the Earth’s surface – has been tipped for a revival in Britain as the country looks for greener ways to keep warm.
The two giant greenhouses of Cornwall’s Eden Project will be heated by the first deep geothermal well to begin operating in the UK decades, it was announced this week.
Engineers have drilled the 4.9-kilometre well so that hot water can be lifted out and piped into the greenhouses at 85°C. Once it cools, it is recycled in the high temperatures underground.
Southampton’s geothermal well, although currently closed for repairs, can feed heat into a communal network that supplies homes, shops and public buildings.
District heating like this is relatively rare in the UK, but is earmarked for a boom as Britain looks for alternatives to the gas boilers that most households currently use.
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