Drilling will begin in Britain's first deep geothermal power plant in Cornwall, where "hot rocks" could supply 3,000 homes
- The aim of the project is to show the potential of geothermal energy
- Two wells will be drilled through granite boulders, the deepest will reach 2.8 miles
- The plant could have the potential to power 3,000 households
Drilling will commence this week at what is possibly Britain's first geothermal power plant in Cornwall.
Near St Day, two wells will be drilled through hot granite boulders, the deepest of which will reach 4.5 miles and power 3,000 homes.
According to Geothermal Engineering, the potential of geothermal energy to generate electricity and renewable heat in the UK will be demonstrated.
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Drilling will commence this week at what is possibly Britain's first geothermal power plant in Cornwall (Fig.). Near St Day, two holes will be drilled through granite boulders, the deepest of which will be 4.5km
The United Downs Industrial Estate plant is expected to have the potential to deliver up to 3 megawatts of electricity.
Once the site drilling is complete, water will be pumped from the deep well at a temperature of approximately 190 ° C (374 ° F).
This water is conveyed through a heat exchanger on the surface and injected again into the soil to absorb more heat from the rock in a continuous cycle.
The recovered heat is converted into electricity and fed into the national grid.
Geothermal technology is referred to as a "continuous" energy source because it does not suffer from peaks and valleys of other sustainable energy sources.
This water is conveyed through a heat exchanger on the surface and injected again into the soil to absorb more heat from the rock in a continuous cycle. The recovered heat is converted into electricity and fed into the national grid
The developers hope that the technology used in the plant can be used at other locations in Cornwall and Devon, where there are hot rocks (pictured).
The developers hope that the technology used in the plant could be used at other sites in Cornwall and Devon.
Similar plants were developed in Insheim and Landau in Germany.
Dr. Geothermal Engineering General Manager Ryan Law said geothermal resources could cover up to 20 percent of UK electricity and heat energy needs.
He said, "It's incredibly exciting to see this forward-looking project getting off the ground with what we hope will be the launch of many similar initiatives across the UK."
The £ 18m ($ 24m) project worth £ 10.6m ($ 13.8m) from the European Regional Development Fund and £ 2.4m from the Cornwall Council (3, US $ 1 million) and 5 million GBP from private investors.
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