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UK's deepest geothermal well drilled in Cornwall

The UK’s deepest geothermal well has been drilled in Cornwall.

The 2.5km-deep shaft was constructed by Geothermal Engineering at Rosemanowes Quarry near Penryn.

The UK's deepest geothermal well has been drilled in Cornwall.

Construction of the geothermal well near Penryn, Cornwall.

It is a trial project, which aims to provide a cheap, quick method of delivering deep geothermal heat.

Dr Ryan Law, managing director of Geothermal Engineering, told NCE: “The project was installed about two months ago and we have been running trials ever since. It is not designed to deliver power but will deliver around 0.5MW of heat, enough for 400 apartments or equivalent.

“The system is aimed at a very different market to large scale geothermal power plants. The aim is to install and connect directly to heat loads such as greenhouses, apartments, schools and swimming pools.

“It has been developed to test a new technology we have developed to deliver deep geothermal heat from single wells. It is not aimed at generating power.”

Geothermal Engineering said it will announce a number of other projects over the next 12 months.

Law added: “Geothermal energy could be a significant contributor to the UK’s energy portfolio offering both heat and power. This project shows we can deliver deep geothermal energy in Cornwall and we look forward to developing further projects in the region.”

The project has been backed by the the Department of Energy and Climate Change.

Ed Davey, Secretary of State for Energy, said: “We need a broad base of renewable energy in the UK and I am pleased to see that a deep geothermal heat project is finally producing energy. This nascent sector could make a real contribution to renewable heat supply in the UK.”

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