UK households paid the fourth-highest electricity prices in Europe during the second half of 2023, according to data comparing rates across the EU. Although the UK government announced it will reduce Value Added Tax (VAT) on domestic electricity from 5% to zero this October, analysts identify three structural factors contributing to the higher costs: gas dependency, energy mix differences, and infrastructure investment.
The UK's electricity pricing system uses a marginal pricing model where the most expensive generator required to meet demand sets the wholesale price for all suppliers. Because gas-fired plants often serve as the final supply unit and face high fuel and carbon emission costs, they frequently dictate the market rate, even when renewable sources generate a significant portion of power.
Energy data for 2025 indicates that 31% of UK electricity was generated from natural gas, compared to 3% in France, which relies heavily on nuclear power. While the U.S. uses more gas (40%), its wholesale prices are lower due to domestic shale production. Additionally, UK network costs rose from £136 in 2019-20 to a projected £250 in 2026 as the country invests in grid modernization to support wind and solar farms.
To address long-term costs, the government aims to achieve clean power by 2030, arguing that reducing gas reliance will stabilize wholesale prices. However, some analysts and the Climate Change Committee suggest shifting policy costs and subsidies from household bills to general taxation to lower the direct burden on consumers.