Dr Kieran Mullan

I fully support the hon. Member’s efforts to raise this issue. She will know from the local projects in her constituency that we are making a start, but it is not enough, and this needs to be part of the broader plan in a comprehensive way. When I first learned about deep geothermal technology, I thought it sounded too good to be true: an environmentally friendly, reliable and cost-effective source of heat and power right underneath our feet. But the more I explored it, the more I realised it truly lives up to its promise. Let me briefly explain the technology. Deep geothermal taps into naturally occurring hot water deep underground to produce significant amounts of usable heat and energy. Making use of that is no different from the way in which the Romans built their baths above hot springs; we just run a pipe down instead of relying on the water making its own way to the surface. People sometimes wonder whether the technology is fracking mark 2. Fracking involves the use of high pressure to crack the rocks to create artificial flows. Like Europe, we have access to resources of naturally flowing water that simply need to be tapped. Greenpeace, Friends of the Earth and the United Nations all support deep geothermal in the light of its environmental benefits. A site is typically 1 to 2 acres. It does not take up huge swathes of farmland like solar panels can or involve erecting wind turbines, which some communities think detract from the local landscape.