Rachel Reeves to Raise Windfall Tax on Low-Carbon Electricity Generators
Chancellor Rachel Reeves is set to increase the government's windfall tax on low-carbon electricity generators in a bid to limit rising UK household energy bills. The move, expected to be announced as early as Tuesday, targets excess profits from older renewable energy and nuclear plants amid soaring electricity market prices following Russia's invasion of Ukraine.
Industry Alert and Market Reactions
Executives across the energy industry have been informed to expect contact from officials on Monday, outlining the government's determination to protect electricity costs from gas market surges and prioritize cheaper renewable sources. Currently, electricity prices are set by the most expensive power source, typically gas plants, leading to significant price hikes across Europe, especially in gas-reliant nations like the UK.
Reeves hinted at these changes during the IMF spring meetings in Washington, describing them as "quite a big change" and "absolutely the right thing to do." Her comments triggered a sharp decline in share prices on Friday, with SSE falling over 6%, Centrica dropping 5%, and Drax down 3%, as investors reacted to the potential financial impact.
Details of the Levy and Proposed Reforms
The electricity generator levy, introduced in 2022, applies a 45% tax rate on electricity sold above £75 per megawatt hour for nuclear, biomass, and renewable projects built before 2017. It is scheduled to expire in March 2028. With electricity market prices surging from around £74/MWh to over £100/MWh due to recent Middle East conflicts, officials fear further increases if disruptions persist into winter.
In addition to the tax hike, the government will consult on "radical" proposals to permanently weaken the link between gas and electricity prices. One plan involves shifting older low-carbon projects from the renewables obligation scheme to newer set-price contracts, guaranteeing electricity at fixed rates. Analysts from the UK Energy Research Centre estimate this could save between £4 billion and £10 billion annually if market prices remain high.
Long-Term Market Reforms and Industry Concerns
A separate proposal by Adam Bell, former head of strategy at the Department for Energy Security and Net Zero, suggests removing gas plants from the market and holding them in strategic reserve. This "radical step" aims to reduce energy bills by up to £80 per year by preventing gas prices from distorting wholesale electricity costs. Bell described it as a significant transfer of value from producers to consumers, benefiting households during the energy transition.
Sources indicate "consternation" within the industry over these plans, which could fundamentally reform energy markets amid increased risk and volatility. The government has declined to comment further, but the proposals signal a major shift toward protecting consumers and promoting renewable energy sources in the UK's energy strategy.
