The Drax power station was responsible for four times more carbon emissions than the UK’s last remaining coal-fired plant last year, despite taking more than £0.5bn in clean-energy subsidies in 2023, according to a report.
The North Yorkshire power plant, which burns wood pellets imported from North America to generate electricity, was revealed as Britain’s single largest carbon emitter in 2023 by a report from the climate thinktank Ember.
The figures show that Drax, which has received billions in subsidies since it began switching from coal to biomass in 2012, was responsible for 11.5m tonnes of CO2 last year, or nearly 3% of the UK’s total carbon emissions.
Drax produced four times more carbon dioxide than the UK’s last remaining coal-fired power station at Ratcliffe-on-Soar in Nottinghamshire, which is due to close in September. Drax also produced more emissions last year than the next four most polluting power plants in the UK combined, according to the report.
Frankie Mayo, an analyst at Ember, said: “Burning wood pellets can be as bad for the environment as coal; supporting biomass with subsidies is a costly mistake.”
The company has claimed almost £7bn from British energy bills to support its biomass generation since 2012, even though burning wood pellets for power generation releases more emissions for each unit of electricity generated than burning gas or coal, according to Ember and many scientists. In 2023, the period covered by the Ember report, it received £539m.
The government is considering the company’s request for billpayers to foot the cost of supporting its power plant beyond the subsidy scheme’s deadline in 2027 so it can keep burning wood for power until the end of the decade.
Drax has won the support of the government thanks to claims that its generation is “carbon neutral” because the trees that are felled to produce its wood pellets absorb as much carbon dioxide while they grow as they emit when they are burned in its power plant.
The company plans to fit carbon-capture technology at Drax using more subsidies, to create a “bioenergy with carbon capture and storage” (BECCS) project and become the first “carbon-negative” power plant in the world by the end of the decade.
A spokesperson for the company dismissed the thinktank’s findings as “flawed” and accused its authors of ignoring its “widely accepted and internationally recognised approach to carbon accounting”.
“The technology that underpins BECCS is proven, and it is the only credible large-scale way of generating secure renewable power and delivering carbon removals,” the spokesperson added.
A government spokesperson said the report “fundamentally misrepresents” how biomass emissions are measured.
“The Intergovernmental Panel for Climate Change is clear that biomass sourced in line with strict sustainability criteria can be used as a low-carbon source of energy. We will continue to monitor biomass electricity generation to ensure it meets required standards,” the spokesman said.
Climate authorities, including the UN’s Intergovernmental Panel on Climate Change and the UK’s Climate Change Committee, which provides official advice to ministers, have included BECCS in their long-term forecasts for how governments can meet their climate targets.
The government’s own spending watchdog, the National Audit Office, has warned that ministers have handed a total of £22bn in billpayer-backed subsidies to burn wood for electricity despite being unable to prove the industry meets sustainability standards.
Mayo said: “Burning wood for power is an expensive risk that limits UK energy independence and has no place in the journey to net zero. True energy security comes from homegrown wind and solar, a healthy grid and robust planning for how to make the power system flexible and efficient.”
The FTSE 100 owner of the Drax power plant made profits of £500m over the first half of this year, helped by biomass subsidies of almost £400m over this period. It handed its shareholders a windfall of £300m for the first half of the year.
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