Officials at Eden said the partnership with EGS would result in the development of a geothermal power plant from which electricity and heat can be taken to power multiple greenhouse complex.

The plant will bore three miles underground Cornwall in hot granite rock to produce hot water that will drive a turbine. Eden estimates that there is enough geothermal energy below Cornwall to eventually power 10 per cent of UK homes.

The 3 MW plant should be completed by 2012 and will cost US$25m.