Britain’s Carbon Budget 7 Sets Course for 87% Reduction by 2042
CarbonUnits.com
The UK’s proposed seventh Carbon Budget sets a target of an 87% reduction in carbon emissions from 1990 levels, applying to the five-year period from 2038 to 2042.
A modern UK EV charging hub supplied by renewable energy from wind turbines and solar panels in the surrounding landscape. AI generated picture.
The proposal, submitted by the Department for Energy Security and Net Zero (DESNZ), caps total permitted emissions for the 2038–2042 period at 535 million tonnes of CO2 equivalent. Both the Environmental Audit Committee and the Climate Change Committee (CCC) have endorsed the proposal.
Carbon budgets are legally binding five-year caps on the volume of carbon emissions the UK is permitted to produce. They must be set a minimum of 12 years in advance to give industry, policymakers, and households adequate planning time. The current fourth budget, running from 2023 to 2027, targets a 77% reduction from the 1990 baseline.
The country’s track record on earlier budgets strengthens the case for the new target. By the close of 2022, emissions had fallen 50% from the 1990 level, against a target of 38% for that period.
DESNZ set out three arguments for the CB7 level. Clean energy adoption reduces the UK’s vulnerability to fossil fuel price disruptions, as evidenced by the economic impact of the conflicts in Ukraine and the Middle East. The net-zero transition is also projected to generate broader gains for the economy, public health, and nature. The budget is additionally framed around Paris Agreement alignment: DESNZ stated it is ‘consistent with the Paris Agreement aim to keep global warming to 1.5 degrees Celsius, to avoid climate disaster for future generations.’ A detailed delivery plan is expected following parliamentary approval of the budget.
Private-sector mechanisms are advancing related 2042 nature targets alongside the emissions framework. Analysis by conservation company Nattergal shows that England’s biodiversity net gain (BNG) system—a planning requirement obligating developers to achieve a minimum 10% net improvement in biodiversity on new developments—could protect more than 80,000 hectares of natural habitat by 2042. This would make a significant contribution towards the government’s pledge to restore or create 500,000 hectares of wildlife-rich habitat across England by that year.
The BNG market has expanded rapidly, growing from a single 32-hectare site in February 2024 to 215 sites covering 7,410 hectares by January 2026, all privately funded. ‘Two years ago, this market did not exist,’ said Archie Struthers, chief executive of Nattergal. ‘Today, it is restoring the equivalent of the Lake District in natural habitat — without a penny of public money.’
