UK Net Zero Savings Claim Totals £530 Per Household, Spread Over Two Decades
A new assessment finds policy levies account for only 13% of the average British energy bill, undermining the Conservative-backed promise of £500-plus annual savings from scrapping net zero.
A new assessment published Wednesday (2026-09-09) found policy costs account for only 13% of the average UK household energy bill. That share constrains how much scrapping net zero could reduce what consumers actually pay, and challenges the Conservative-backed claim that abandoning the targets would save families £500 or more a year.5
The £530 annual figure in the underlying analysis derives from £320 billion in projected cumulative power-system savings between 2030 and 2050, divided across roughly 30 million households over 20 years. That arithmetic produces a persuasive headline. It does not represent a direct reduction in what appears on an energy bill.5
The Onward think tank, backed by the Conservatives, published its original claim in August (2026-08-20): scrapping net zero regulations after 2030 would save households around £540 a year, framed around a commitment to make energy "as cheap as possible."3
Demand figures in Wednesday's (2026-09-09) assessment tell a more complicated story. The Alternative Policy Package modelled in the analysis reaches 441 TWh of electricity demand in 2050, against a business-as-usual scenario of 484 TWh, a gap of 43 TWh or about 10%. The difference comes from pulling back support for electric vehicles, heat pumps, and electrolytic hydrogen. Less electrification shrinks demand projections; it also removes the load that cheaper renewables would otherwise serve over the long run.5
The carbon side is unambiguous. Scrapping net zero policies under the modelled scenario would add 524 million tonnes of power-sector carbon emissions between 2030 and 2050.5
UK households are paying high bills now regardless of what happens to net zero targets. The energy price cap rose 13% in July (2026-07), and a further 2% increase is forecast for Autumn, according to analysis published August (2026-08-19). More than a million households currently spend more on green energy levies than on fresh vegetables each week.2
EDF, the French energy supplier active in the UK retail market, warned in August (2026-08-25) that without extended government support, the average dual-fuel bill could be more than 13% higher by 2030 than it stood in the fourth quarter of 2025. That warning concerns whether the government continues to subsidise bills, not which technologies it promotes.4
Cost increases between 2019 and 2024, attributed to UK reliance on gas alongside policy costs, left energy-intensive industries £30 billion worse off, the August (2026-08-19) analysis showed. Policy levies were a component. So was gas dependency.2
Grid costs add another layer. System balancing ran to over £2 billion between January and September 2025, and annual constraint costs are projected to reach £8 billion by the late 2020s if transmission upgrades are delayed, according to the same August (2026-08-19) analysis. Rolling back net zero obligations eases some connection queue pressure but does not fix congestion in the existing network.2
The subsidy structure within the current system is not straightforward. Drax, the 2.6 GW biomass power station and the UK's largest emitter, received £1 billion in subsidies in 2024-25, costing every UK household £13 per year, think tank Ember reported in May (2026-05-21). Subsidies rose 15% year on year, while the plant's emissions were zero-rated in carbon accounting.1
Renewable output is rising fast in parallel. Generation hit a record 43.7 TWh between January and March 2026, up 18% on the equivalent period in 2025. The electricity system is adding low-cost capacity even as the political debate over who finances the transition remains live.2
Whether government support is extended or withdrawn will shape UK household bills more directly than any change in net zero policy, given policy levies account for only 13% of the current bill. EDF's projection of a bill rise exceeding 13% by 2030 in the absence of that support is the number to track.4,5