Drax is UK’s top carbon polluter yet again, widening lead with 16% increase in a year | Ember

Drax is UK’s top carbon polluter yet again, widening lead with 16% increase in a year

17 Jul 2025

Although subsidy cuts are expected to halve support from 2027, Drax is still projected to remain the UK’s biggest emitter until 2030.

Top emitters list gets a shake up amid coal and steel closures

Drax leads the list of emitters, followed by Port Talbot Steelworks and Pembroke gas plant. Port Talbot Steelworks — the UK’s largest coal-based industrial emitter — ceased operations in September 2024, but remained in second place due to high emissions earlier in the year. Pembroke, a gas-fired power plant, ranked third.

For the first time in decades, no coal power plant appeared on the list of top 25 largest emitters following the closure of Ratcliffe-on-Soar last year. In 2023 it was the UK’s fifth largest emitter.

Imported biomass is not clean power, it’s the UK’s biggest single source of climate-damaging carbon emissions” said Ember analyst Frankie Mayo. “Yet Drax continues to receive millions in public funds and it’s set to remain the UK’s top emitter through 2030.

Gas generators made up more than half of the top 25 largest emitters. This was despite gas generation dropping to its lowest level in 25 years — just 84 TWh, or 30% of total generation — displaced by cheaper imports and record wind and solar output.

Energy intensive industries like steel, cement and refining also continue to feature in the largest emitter ranking. This shows the importance of electrifying heavy industry in order to decarbonise, something echoed by the UK’s new Industrial Strategy.

“The UK is already aiming for key interventions on emissions: cutting  biomass subsidies and charting a path away from gas dependence,” said Ember analyst Frankie Mayo. “Decarbonising energy-intensive industry is another critical step. For that, the government will need to address high electricity prices and grid connection delays to accelerate the next wave of electrification.”

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Ember is an independent energy think tank that aims to accelerate the clean energy transition with data and policy. It creates targeted data insights to advance policies that urgently shift the world to a clean, electrified energy future.

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