The Warm Homes Plan Explained (2026)

What the Warm Homes Plan funding programme actually is

Warm Homes Plan funding is the simplest way to describe almost every home energy grant available in the UK right now, but it helps to be clear about what the programme is and what it is not. The Warm Homes Plan is the government’s flagship home-energy programme, a major multi-year investment aimed at upgrading millions of homes over the coming years. It is not a single grant you fill in one form for. It is an umbrella strategy that pulls several real, separately administered schemes under one banner and adds a new finance route on top. For the current programme scope and funding, see gov.uk.

That distinction matters because a lot of online guidance treats the Warm Homes Plan as if it were one application. It is not. The money reaches households through the Energy Company Obligation (ECO4), the Great British Insulation Scheme, the 7,500 pound Boiler Upgrade Scheme, the council-delivered Warm Homes: Local Grant, and a planned low or zero-interest finance route for households who do not qualify for grants. Getting Warm Homes Plan funding, in practice, means working out which of those routes fits your circumstances and applying to that one. This guide explains the shape of the programme so you can see where you might sit, and points you to an eligibility check before you commit to anything.

The schemes it brings together

Each scheme inside the Warm Homes Plan has its own purpose and its own rules, so it is worth understanding them as separate doors into the same building.

ECO4, the fully funded whole-house route

The Energy Company Obligation, now in its fourth phase as ECO4, is run by Ofgem and funded by the larger energy suppliers. It is aimed at fuel-poor households in EPC band D to G that are on qualifying means-tested benefits. Where a home qualifies, ECO4 can fund insulation, first-time central heating, heating-system upgrades, heat pumps and solar PV at no cost to the household. It is a whole-house, fabric-first scheme, so an eligible home often receives several measures together rather than a single fix.

The Great British Insulation Scheme

The Great British Insulation Scheme funds a single insulation measure, such as loft, cavity wall, solid wall, room-in-roof or underfloor insulation. It has two routes: a Low-Income Group on the same means-tested benefits as ECO4, and a broader General Group open to homes in Council Tax bands A to D in England (A to E in Scotland and Wales) with an EPC of D or below, with no benefit required. The General Group is the part most people miss, and it opens insulation funding to a far wider audience than the benefit-only assumption suggests.

The Boiler Upgrade Scheme

The Boiler Upgrade Scheme is the heat pump route. It offers 7,500 pounds towards an air source or ground source heat pump, with separate grant amounts available for some other low-carbon systems such as biomass boilers, for homeowners and small businesses in England and Wales replacing a fossil-fuel system. Grant amounts can change, so check current rates on gov.uk. There is no income or benefit test, and the grant is applied for by your installer and deducted from their invoice, so you never handle the money yourself.

The Warm Homes: Local Grant

The Warm Homes: Local Grant is delivered by local authorities rather than energy suppliers. It is for lower-income owner-occupiers and private renters in England in EPC band D to G homes, with eligibility typically turning on a household income and savings test, though postcode or qualifying-benefit routes can override that. The exact income and savings thresholds can change, so confirm the current limits on gov.uk. It funds an insulation plus low-carbon heating package, and it sits inside the Warm Homes Plan as a time-limited programme; confirm current delivery dates on gov.uk.

What it funds and how the work is assessed

Because the Warm Homes Plan is a programme and not a single product, the useful way to think about it is matching your home to the right route rather than specifying a system in kilowatts. The measures span insulation in its various forms, air source heat pumps, solar PV, batteries and smart controls, primarily for homes, with some scope for community and smaller commercial buildings still under consultation.

The measures are not chosen at random. Government-funded retrofit is fabric-first and follows a whole-house assessment under the PAS 2035 framework. A qualified retrofit assessor surveys the property, a coordinator plans the measures in the right order, typically insulation before heating, and the completed work is lodged with TrustMark. A funded home package commonly combines insulation, a heat pump and smart controls, with an installed value in the region of 5,000 to 25,000 pounds depending on the property. Under ECO4 specifically, whole-house retrofit packages frequently exceed 15,000 pounds in installed value at no cost to eligible households. These figures are illustrative and depend entirely on the home and the live scheme rules.

The scheme transition you need to know about

The most important thing to understand is that the picture is moving fast. The legacy supplier-obligation schemes are time-limited and being wound down. ECO4 and the Great British Insulation Scheme are both closing to new measures, so if either fits you the application windows are finite; confirm current deadlines on gov.uk and Ofgem. The direction of travel is for the supplier-obligation model to give way to the Warm Homes Plan delivery model, channelling funding through the Warm Homes: Local Grant, the Boiler Upgrade Scheme and the new finance route instead.

The honest position is straightforward. If you are eligible for a closing scheme, it makes sense to look at applying before the window shuts. If you are not, the successor routes under the Warm Homes Plan are coming. Because the rules and end dates can change, accurate guidance dates quickly, which is exactly why you should confirm anything time-sensitive against the live gov.uk eligibility checker for the specific scheme rather than relying on a static page.

How to avoid the scams that surround it

The flip side of a large public programme is that it attracts cold-callers. The single most useful rule is this: a legitimate scheme never cold-calls demanding upfront payment or bank details on the doorstep. Real measures are installed by MCS-certified, TrustMark-registered installers under PAS 2035 standards, and grants like the Boiler Upgrade Scheme are deducted at source so you never hand over money. If a “free grant” offer pressures you for a deposit or your bank details, it is not the Warm Homes Plan.

Finding your route

The Warm Homes Plan is best understood as a map of routes, not a single form. A reasonable starting point is to read the full grants and funding guide to see each scheme in turn, get a sense of where grants stop and finance begins on the cost page, and use the savings calculator to picture the impact of the measures on offer. If you would like a steer on which door fits your circumstances, you can tell us about your home and we will point you toward the right scheme. For the detail on the closing supplier route, our ECO4 page sets out the eligibility and deadlines. Everything here is general guidance; your eligibility and any funded amount depend on your property and the scheme rules at the time you apply.