The UK government has announced its proposed Seventh Carbon Budget, setting an ambitious target to reduce economy-wide greenhouse gas emissions by 87% by 2040 compared to 1990 levels. The budget establishes a cap of 535 MtCO₂e for the period 2038–2042 and represents a key milestone on the UK's pathway to achieving net-zero emissions by 2050.
Introducing the proposal to Parliament, Energy Secretary Ed Miliband emphasized that the target will not only support climate goals but also reduce the UK's exposure to volatile fossil fuel prices and strengthen long-term energy security.
The UK has already achieved significant progress, cutting emissions by approximately 54% since 1990. According to the Department for Energy Security and Net Zero (DESNZ), emissions reductions have accelerated since the introduction of carbon budgets in 2008, driven largely by the expansion of renewable energy and the phase-out of coal-fired power generation.
The new target aligns with recommendations made by the Climate Change Committee (CCC), which advised the government on the emissions pathway required to stay on track for net zero. The CCC estimates that achieving the 2040 target will require substantial emissions reductions across key sectors, including transportation, buildings, industry, agriculture, and land use.
While early efforts have focused primarily on decarbonizing the energy sector, future reductions will increasingly depend on transforming buildings, surface transport, agricultural practices, and land management. Although significant upfront investment will be required, the CCC projects that the transition will deliver net economic savings during the Seventh Carbon Budget period through the adoption of more efficient, low-carbon technologies and reduced reliance on fossil fuels.
The proposed budget highlights the UK's continued commitment to climate leadership while strengthening economic resilience and accelerating the transition to a low-carbon economy.
