Carbon budgets in the UK 2008-2037, by period
Under the Climate Change Act, the UK government is required to set a legally-binding carbon budget that will enable the country to reach net zero emissions by 2050. Carbon budgets cap the amount of greenhouse gases the UK can emit over a five-year period, and are set at least 12 years in advance.
The first UK carbon budget ran from 2008 to 2012, with an emission cap of just over three billion metric tons of carbon dioxide equivalent (GtCO₂e). The UK is currently in its fourth carbon budget period, which has an emissions cap of 1.9 GtCO₂e. The sixth carbon budget covers the period from 2033 to 2037, and caps emissions at 965 MtCO₂e. The seventh Carbon Budget for the period of 2038 to 2042 will be set in 2025.