Emissions in sectors covered by the UK emissions trading scheme (ETS) declined by 11.5pc year on year in 2024, data published by the UK ETS authority show, slowing their decline slightly from the previous year.
Stationary installations covered by the UK ETS emitted 76.7mn t of CO2 equivalent (CO2e), down by 12.9pc from 2023, the data show. But this was offset somewhat by a 2pc increase in aviation emissions to 8.99mn t CO2e.
Overall UK ETS emissions now have declined for two consecutive years, having fallen by 12.5pc in 2023. Emissions under the scheme rose by 2.5pc in 2022, as a strong rebound in aviation activity following earlier Covid-19 restrictions outweighed declining stationary emissions. Stationary emissions have decreased in every year since the scheme launched in 2021.
The majority of the decline in stationary emissions under the UK ETS last year took place in the power sector, where emissions dropped by 18.2pc to 30.6mn t CO2e. The country's last coal-fired plant, Ratcliffe-on-Soar, closed in September last year. And the share of gas-fired output in the generation mix dipped as wind, solar and biomass production and electricity imports edged higher.
Industrial emissions also declined, by 8.9pc to 46.1mn t CO2e. The iron and steel sector posted the largest relative drop of 30pc to 6.54mn t CO2e. Emissions from crude extraction fell by 6.4pc to 6.0mn t CO2e, while emissions from gas extraction, manufacture and distribution activities decreased by 8.9pc to 5.3mn t CO2e. The chemicals sector emitted 2.28mn t CO2e, down by 5.2pc on the year.
A total of 43 installations were marked as having surrendered fewer carbon allowances than their cumulative emissions since the launch of the UK ETS, as of 1 May. A further two installations failed to report their emissions by the deadline. "Appropriate enforcement action" will be taken against operators that fail to surrender the required allowances, the UK ETS authority said.
Overall greenhouse gas emissions across the UK economy dropped by a smaller 4pc last year, data published by the government in March show. This decline also was driven principally by lower gas and coal use in the power and industry sectors, with smaller declines in transport and agriculture, not covered by the UK ETS, and an increase in buildings emissions, also out of the scheme's scope.
Emissions under the EU ETS in 2024 dipped by a projected 4.5pc from a year earlier, based on preliminary data published by the European Commission in April. The UK and EU last month announced that they will "work towards" linking the two systems together.
