The government’s Warm Homes Plan will allocate £1.8 billion over three years, roughly £600 million annually, to retrofit homes across England. That money, drawn from the Energy Company Obligation (ECO4) budget, targets the 2.3 million households living in fuel poverty, as defined by the Department for Energy Security and Net Zero. For homeowners on standard variable tariffs, the question is not whether to apply, but whether they qualify.
Who qualifies, and who doesn’t
Eligibility hinges on a combination of property EPC rating and household income. Properties rated EPC D, E, F, or G qualify, provided the occupants receive certain benefits: Pension Credit, Child Tax Credit, Universal Credit, or Income Support. The catch is that households with an EPC rating of C or above are excluded, even if income is low. Homeowners earning under £31,000 a year but not on benefits may still apply via a local authority referral, as reported by The Independent. That means roughly half of all homes in England rated below C could be in scope, around 5 million properties, though actual uptake depends on installer capacity.
What it costs a typical 3-bed semi
A semi-detached house in Birmingham with EPC rating E, currently using 15,000 kWh of gas and 3,500 kWh of electricity annually, could receive cavity wall insulation, loft insulation top-up, and a new gas boiler under the plan. The full cost of those upgrades, typically £4,000–£6,000, is covered by the grant. The household’s annual energy bill would drop from £1,850 to around £1,450, assuming current unit rates of 6.5p/kWh for gas and 28p/kWh for electricity, according to Ofgem’s October 2024 price cap. That £400 saving is a 22% reduction. But the scheme does not cover air source heat pumps for all homes; those are reserved for properties with EPC D or below and no mains gas connection.
The ECO4 catch, and how to avoid delays
The Warm Homes Plan is not a single application portal. Homeowners must contact their energy supplier, British Gas, EDF, Octopus, or others, or a local council that has signed up to the LA Flex route. Ofgem’s latest data shows that in 2023, only 62% of allocated ECO4 funding was spent, partly because installers are stretched and partly because households did not know they qualified. The Energy Saving Trust recommends checking eligibility via the gov.uk ECO4 page before calling an installer. Once approved, the work must be completed within 12 months, or the funding lapses. That deadline has caught out an estimated 15,000 households since the scheme launched in 2022, according to industry sources.
What to do and by when
Homeowners on benefits or low incomes should check their EPC rating, free via the gov.uk EPC register, and then contact their energy supplier or council. Applications for the current ECO4 phase close on 31 March 2027. Those who miss that window may still access the successor scheme, ECO5, but details have not yet been published. For households not eligible, the alternative is the Boiler Upgrade Scheme, which offers £7,500 off a heat pump, or the Great British Insulation Scheme, which provides discounted loft and cavity wall insulation. Both are open until 2026.
Frequently Asked Questions
Yes, owner-occupiers are eligible if they meet the income and EPC criteria. The scheme does not require a mortgage or landlord permission. You must be on a qualifying benefit or referred by your local council.
Only for homes without mains gas and with an EPC rating of D or below. For gas-heated homes, the grant typically covers insulation and boiler upgrades. Heat pumps are available under the separate Boiler Upgrade Scheme, which offers £7,500 off installation.
