UK manufacturers pay 80% more for electricity than their EU competitors, a gap that the Energy Intensive Users Group says could shutter factories within a year. That is not a lobbying line. It is the finding of a new report covered by Plant & Works Engineering. Whichever party wins the next election, the report argues, must cut industrial electricity costs or watch the country’s manufacturing base shrink further.
Why factory energy costs matter for your home bill
The link between industrial and domestic energy markets is tighter than most homeowners realise. When factories close, grid maintenance costs are spread over fewer users. National Grid’s transmission charges, which Ofgem sets, fall disproportionately on households when industrial demand drops. A 2023 analysis by Cornwall Insight found that if 10% of industrial load vanished, domestic standing charges could rise by £15–£20 a year. That is before any wider economic fallout, job losses, lower tax receipts, higher welfare spending, which ultimately lands on household incomes.
What this means for your EPC and energy upgrades
The same high wholesale gas prices that squeeze factories also keep household bills elevated. The price cap, which Ofgem adjusts quarterly, still tracks gas costs because gas-fired power plants set the marginal price in the UK market. The Energy Saving Trust estimates a typical 3-bed semi spends £2,100 a year on gas and electricity under the current cap. That figure is unlikely to fall meaningfully until the UK decouples electricity pricing from gas, a reform the report’s authors also urge.
For homeowners, the rational response is to reduce consumption. Insulating a loft to 270mm can save up to £350 a year, according to the Energy Saving Trust. Cavity wall insulation adds another £300. A heat pump, though expensive upfront at typically £7,000–£13,000 after the Boiler Upgrade Scheme grant, cuts heating bills by 20–40% in a well-insulated home. Solar panels with a 4kW system save around £600 annually on electricity. Each upgrade also lifts the EPC rating, which the government’s proposed Minimum Energy Efficiency Standards for owner-occupied homes would eventually require.
The catch: grants are finite and time-limited
But… the schemes that help fund these upgrades are not bottomless. The Boiler Upgrade Scheme, which runs until 2028, has already allocated over 40,000 vouchers. The ECO+ programme, targeting low-income and off-grid homes, closes to new applications in March 2025. The Great British Insulation Scheme, which offers free or discounted loft and cavity wall insulation, has seen lower-than-expected uptake, partly because homeowners do not know it exists. The government has not run a national awareness campaign since the Green Deal collapsed in 2015.
Officials have not confirmed whether funding will be extended after the next election. Labour has pledged a £6bn home insulation programme. The Conservatives have not matched that figure. The Liberal Democrats propose a ten-year retrofit plan. None of these promises are law yet.
What to do now
Homeowners on standard variable tariffs can check eligibility for the Great British Insulation Scheme through their energy supplier or via gov.uk. Those with an EPC below band C and an annual income under £31,000 may qualify for free measures under ECO+. Households considering a heat pump should apply for the Boiler Upgrade Scheme voucher before installation begins, the grant is deducted at point of sale, not claimed later.
The factory closure warning is a signal for households too. Energy prices will not fall back to 2020 levels without structural reform. Until that happens, the cheapest kilowatt-hour is the one you do not use. Apply by 31 March 2025 for ECO+ funding. Check your EPC now.
Frequently Asked Questions
Yes, indirectly. When industrial users shut down, the fixed costs of maintaining the National Grid are spread across fewer customers, pushing up standing charges. Ofgem data shows that a 10% reduction in industrial demand could add £15–£20 to annual household standing charges. The wider economic effects, job losses, reduced tax revenue, also put household finances under pressure.
Loft insulation offers the fastest payback for most homes. The Energy Saving Trust estimates a typical semi-detached house saves around £350 a year after insulating to 270mm, with installation costs of roughly £500–£700. That is a payback period under two years. For homes with solid walls, external wall insulation costs more (£8,000–£12,000) but can save up to £500 annually and lifts the EPC rating by two bands.
