Dr Kieran Mullan

I agree with the hon. Member. The Government need an entire strategy for deep geothermal that will hopefully draw attention to those different pieces of the puzzle, including planning and licensing, which are so important. Not too far away from his constituency is the Eden Project, which people see as a byword for environmental credentials in this country. It is pioneering this technology, which is a powerful testimony to its environmental benefits. Since the closure of the non-domestic renewable heat incentive in 2021—unfortunately just as interest was peaking from industry—deep geothermal, unlike solar and wind in their early beginnings, has been without comprehensive Government support to develop the market. There have been encouraging breakthroughs, as was mentioned, and in 2023 the UK’s first operational deep geothermal plant to open in 37 years went online at the Eden Project. Deep geothermal also made its historic debut in allocation round 5 of contracts for difference, with three projects from Geothermal Engineering Ltd securing approval, totalling 12 MW of capacity. At Langarth garden village, green heat network funding is now supporting the development of a geothermal-powered heat network to turn that resource into local supply. Those successes show that, with the right backing, geothermal can become a key player in our transition to clean, sustainable energy. However, those ad hoc wins are not providing the sort of comprehensive dedicated approach that we need. As it stands, the UK has fallen far behind other countries that have for some time harnessed the potential of deep geothermal. If we look across Europe, as of 2022 there were 74 projects in France, 31 in the Netherlands, and 190 in Germany. Deep geothermal energy heats more than a quarter of a million homes in Paris, and the French Government aim to increase the number of schemes by 40% by 2030. Munich is pouring in €1 billion through to 2035 to develop deep geothermal and make the city’s heating carbon neutral. In fact, Germany is already producing more than 350 MW annually, and the Government are targeting at least 100 new geothermal projects. Across Europe alone, hot sedimentary aquifers have the potential to provide eight terawatts of heat at 90° C—30 times more than the district heating systems that currently serve 70 million people across the region. The potential is enormous.