Energy companies could be required to fund home efficiency upgrades until late 2026, a lifeline for the 4.5 million UK homes with an EPC rating below C. The Energy Company Obligation (ECO4) scheme, which forces suppliers like British Gas and EDF to pay for insulation, heating controls, and in some cases solar panels, was due to end in March 2026. But the government has extended the final delivery deadline to 30 September 2026, as reported by edie.net. For households struggling with bills that have risen by 54% since 2021, this extension buys time, but only if they act fast.
Who qualifies, and who doesn’t
ECO4 targets the least efficient homes: those with an EPC rating of D, E, F, or G. Eligibility is means-tested via benefits such as Pension Credit, Universal Credit, or Income Support. Homeowners and private tenants (with landlord permission) can apply. But the catch is that the scheme is not a universal grant. Ofgem, which administers ECO4, caps total spending per supplier, and installers report that some budgets are already fully allocated for 2025. The extension to September 2026 gives suppliers breathing room, but households on standard tariffs who are not on benefits or who live in a Band C home will not get a penny. Energy Saving Trust data shows that only about 2 million households are likely to qualify, roughly 8% of the UK total.
What it costs a typical 3-bed semi
For those who do qualify, the savings can be substantial. A typical 3-bed semi with cavity wall insulation and loft insulation could cut annual heating costs by £250–£400, according to Energy Saving Trust estimates. If the upgrade includes a first-time central heating system or solar PV, the savings rise further. But the funding covers installation costs, not ongoing energy use. The typical grant value per household is around £10,000, though this varies by region and supplier. The government has not confirmed whether the extension will increase the total ECO4 budget beyond the current £4 billion allocated for 2022–2026. Without new money, suppliers may simply spread the same pot over a longer period, meaning fewer homes get help each year.
How to apply, and why you should start now
Homeowners cannot apply directly to the scheme. Instead, they must contact their energy supplier or a registered installer. The process works like this: the supplier assesses your home’s EPC, checks your benefit status, and arranges an installer. But demand is high. The National Insulation Association reported in early 2025 that some installers have waiting lists of six months or more. Starting now gives you a better chance of securing a slot before the September 2026 deadline. If you are on a low income and live in a draughty home, call your supplier today. The extension is a window, not a guarantee. Ofgem’s website lists approved installers by region, and the Energy Saving Trust offers free advice on what to ask when you call.
Households on standard variable tariffs should check their EPC rating at gov.uk. If it is below C and you receive qualifying benefits, you could be eligible. The extension runs to 30 September 2026, but installer capacity is finite. Act now, or miss the chance to cut your bills for good.
Frequently Asked Questions
No. ECO4 is strictly means-tested through benefits like Pension Credit, Universal Credit, or Income Support. Some flexible eligibility routes exist for local authority referrals, but the main route requires benefit receipt.
You can contact another supplier or check with Ofgem for alternative suppliers in your area. Some suppliers pool budgets, but availability varies. The extension to September 2026 may free up capacity, but it is not guaranteed.
