Geothermal Energy

Jayne Kirkham Excerpts

Thursday 6th March 2025 Commons Chamber

[Dr Kieran Mullan (Bexhill and Battle) (Con)]

I am grateful to have been granted this Adjournment debate, as it provides a welcome opportunity to put on the record in this new Parliament the benefits that deep geothermal could deliver for our country, in particular for parts of our country that most need investment, while making a contribution to the vital issue of energy security.

Helping me in this effort is the all-party parliamentary group on deep geothermal, which the Association for Renewable Energy and Clean Technology helps to administer. I am delighted to spot the hon. Members for Truro and Falmouth (Jayne Kirkham), for Camborne and Redruth (Perran Moon) and for Rushcliffe (James Naish) in the Chamber, who are all members of the APPG, which provides me with an opportunity to recognise and thank them for the work they are doing for the cause.

Deep geothermal energy remains an underutilised resource in the UK, despite its potential to provide reliable renewable heat in particular, and also power. With growing pressure to secure our energy future and decarbonise heating, now is the time to give this technology the attention it deserves. As we work towards energy security and decarbonisation, we must explore every viable renewable energy source. Deep geothermal offers a stable and sustainable solution, yet it remains largely untapped in the UK. To unlock its potential, the Government must take the lead, providing the necessary support to get projects off the ground and demonstrate their long-term viability.

One of the biggest challenges we face in the journey to net zero is the decarbonisation of heating, which must be treated as a priority. The UK has more than 28.5 million homes and 1.9 million other buildings�including offices, hospitals, shops and warehouses�the vast majority of which rely on gas boilers for both heating and hot water. These buildings alone account for nearly one fifth of the UK�s total emissions. The Climate Change Committee has identified decarbonising heat as one of the most difficult yet essential steps in reaching net zero.

Achieving net zero by 2050 requires us to use every tool at our disposal. While much of the Government�s attention has been focused on air and ground source heat pumps, alongside other electrification methods, which have an important and certainly dominant role to play, converting the entire housing stock to those technologies will put immense pressure on our electricity grid and supply chains. That is where deep geothermal stands out. It offers a reliable, low-carbon solution for heating that is not dependent on sun or wind�it is there all year round, whatever the weather�and has been successfully deployed in other countries to great effect.

[Jayne Kirkham (Truro and Falmouth) (Lab/Co-op)]

Does the hon. Member agree that geothermal, as a baseload energy source that can be developed quickly, should be included in the Government�s clean power plan and have the priority that that affords for grid connections?