Further life extensions for two UK nuclear power plants

The operational lives of the Heysham 1 and Hartlepool nuclear power stations have been extended by a further two years, allowing both facilities to continue generating electricity until March 2030.

The extension was confirmed by Centrica (which holds a 20% stake in the stations) and EDF (which owns an 80% majority stake). The decision follows technical assessments that support continued operation and forms part of wider efforts to maintain reliable low-carbon electricity generation as the UK works to strengthen energy security and expand clean power supplies.

Together, the two stations generate enough electricity to power more than four million homes each year. The additional operating period is expected to provide around 6TWh of extra electricity generation for Centrica, with the company stating that no significant upfront capital investment is required to support the extension.

Terms agreed

This announcement comes directly after Centrica confirmed heads of terms for a 20-year regulated Contract for Difference (CfD) agreement for the Sizewell B nuclear power station, which is expected to enable the station to continue operating from 2035 to 2055. The contract with UK Government is expected to be finalised later this year.

Have you read?
Constellation backs Blue Energy in first SMR investment
Global nuclear M&A approaches $7bn as demand surges
Nuclear reactor module is 3D printed by Florida startup

There is no change to the expected closure date of March 2030 for  the company’s other nuclear stations, Heysham 2 and Torness, as announced in December 2024. 

Discussing this latest news, Centrica’s group chief executive, Chris O'Shea, said: "I'm delighted that Heysham 1 and Hartlepool will continue to play a key role in the UK's energy system for longer. These stations provide reliable, low-carbon electricity that supports Britain's energy security, protects skilled jobs and underpins a more resilient economy.”

Clear ambition

Presenting EDF’s perspective, managing director of Nuclear Operations, John Munro, said: "We have been clear it is our ambition to generate from these stations for as long as it is safe and commercially viable to do so - it is great to be able to confirm a further two-year extension for Heysham 1 and Hartlepool.

"The AGR stations have been the backbone of secure, zero carbon generation in the UK for five decades. The nuclear fleet also has a key role in maintaining grid stability, which is so important as the overall system becomes led by renewables. This decision retains stable baseload, domestic generation, reducing reliance on imports during tighter periods."

Industry response

EDF and Centrica’s news was also greeted warmly by industry experts. Tom Greatrex, chief executive of the UK’s Nuclear Industry Association, said: “Extending the life of both Heysham 1 and Hartlepool means two more years of reliable, clean power. The significance of this cannot be understated, given the UK's exposure to volatile gas prices and the need to protect households by providing baseload power. Heysham 1 and Hartlepool will now continue to play a crucial part for longer.”

Greatrex added: “This announcement is also a reminder that, as our existing fleet approaches retirement, we must move at pace on new nuclear, taking the decisions needed now to deliver the next generation of reliable, secure, low-carbon electricity.”