Free Insulation Grants Scotland 2026

Insulation Grants in Scotland: Some of the Most Generous in the UK

Scotland has quietly built one of the strongest insulation funding landscapes in the UK. Between Warmer Homes Scotland, the Home Energy Scotland Grant and Loan, ECO4, and Area-Based Schemes run by local authorities, there are multiple overlapping routes to free or subsidised insulation, and unlike England there's a substantial grant open to homeowners who aren't on benefits at all. The Great British Insulation Scheme, which used to sit alongside these, closed on 31 March 2026 and hasn't been replaced.

Warmer Homes Scotland: Fully Funded for Lower Incomes

This is the flagship scheme for eligible households, and Home Energy Scotland describes it as support "worth £10,000 or more". Wall insulation, loft insulation and draught-proofing are all on the list of improvements, alongside heating and a home renewables system. In most cases the Scottish Government meets all the costs, though Home Energy Scotland is clear that in rare cases you may be asked to contribute, with an interest-free loan available if so.

The household gate is the one everyone quotes: someone in the household receiving a qualifying passport benefit, or aged 75 or over with no working heating, or holding an SR1, DS1500 or BASRiS form. But the property has to clear a second set of conditions, and these are the ones people miss:

• You're a homeowner or the tenant of a private-sector landlord (private renters are eligible, with the landlord's permission)
• You live there as your main residence and have done for at least six months, unless you hold an SR1, DS1500 or BASRiS form
• The home has a poor energy rating, which Warmworks assesses
• The floor area is 230m² or less, typically up to five bedrooms
• The council tax band is A to G
• The home meets the tolerable standard set out in the Housing (Scotland) Act 2006

Home Energy Scotland notes these criteria may change from time to time, so treat this as a starting point rather than the final word.

The scheme doesn't just do one thing and leave. A Warmworks assessor looks at the whole home, room by room including the loft, and recommends a package. To apply, call 0808 808 2282 (Home Energy Scotland). They check eligibility and make the referral into Warmworks.

Home Energy Scotland Grant and Loan: The Route If You're Not on Benefits

This is the part most insulation pages skip entirely, and it's the best-funded non-means-tested insulation offer anywhere in the UK. The Home Energy Scotland Grant and Loan gives a grant of up to 75% of the combined cost of your measures, capped at £7,500, with the rest available as an interest-free loan. You don't need to be on benefits.

The per-measure figures are published, and they're worth reading before you get quotes:

Two things to note. Spray foam insulation is not funded, full stop. And those secondary measures at the bottom of the table are only eligible if you combine them with an application for a primary improvement or a renewable technology, so you can't just claim £375 for draught proofing on its own. Rural and island households get the £1,500 uplift on the energy efficiency grant as well as the heating one, taking total grant funding across measures up to £18,000.

ECO4: Energy Company Obligation

ECO4 covers Great Britain (England, Scotland and Wales, it doesn't apply in Northern Ireland) and runs alongside the Scottish-specific schemes. Energy companies fund insulation for low-income and vulnerable households. If you're on means-tested benefits or have a low income with a poor EPC rating, ECO4 can fund cavity wall, loft, and solid wall insulation at no cost to you. ECO4 has been extended to run until the end of December 2026.

Many Scottish homeowners qualify for both ECO4 and Warmer Homes Scotland. Advisers at Home Energy Scotland will point you to whichever is the better route for your situation.

GBIS: Closed

The Great British Insulation Scheme (GBIS) was a separate energy-company-funded route that ran alongside ECO4 and targeted homes in lower council tax bands (A–E in Scotland and Wales; A–D in England). Ofgem's wording is that it "began in April 2023 and closed on 31st March 2026". Nothing has replaced it.

If you were counting on GBIS, Scotland is a better place to be than England, because the Home Energy Scotland Grant and Loan above isn't means tested either. Your other routes are ECO4 (if you're on benefits or a low income) or Warmer Homes Scotland (if you clear the passport benefit gate).

Area Based Schemes: Local Authority Funding

Scottish local authorities run their own Area Based Schemes (ABS), funded by the Scottish Government, which target specific geographic areas for bulk insulation programmes. The idea is that doing whole streets or communities at once reduces costs and disruption.

If your area is being targeted, you might receive a letter through the door, or you can contact your local council to ask whether any ABS schemes are planned for your area. Participation is voluntary but the work is typically free or heavily subsidised for eligible households.

What's Typically Free Right Now

For most Scottish homes, the following insulation types are available for free if you meet basic eligibility criteria:

• Loft insulation: widely available through ECO4 and Warmer Homes Scotland. Insulating a bare loft to 270mm costs around £750 in Great Britain and saves about £190 a year on a typical semi, on Energy Saving Trust figures. Topping up an existing 120mm costs around £600 and saves far less, about £17, which is why it's rarely worth paying for yourself.
• Cavity wall insulation: available through the same routes where the property has an unfilled cavity. The Energy Saving Trust puts a typical Great Britain installation at around £2,200, saving roughly £110 to £380 a year depending on house type.

Solid wall insulation is the expensive one: the Energy Saving Trust puts internal wall insulation at around £12,000 for a typical three-bed semi in Great Britain and external at around £15,000. That's exactly where the Home Energy Scotland £7,500 grant plus a £2,500 interest-free loan earns its keep, because £10,000 of support against a £12,000 job is a different conversation from paying the lot. If you're eligible for Warmer Homes Scotland instead, it can be covered outright.

How to Find Out What You're Entitled To

The simplest approach: call Home Energy Scotland on 0808 808 2282. They have a clear picture of all the overlapping schemes and can tell you in a single conversation what funding you're eligible for and how to access it. They're not trying to sell you anything. It's a government advisory service.

If you'd rather start online, the Home Energy Scotland website has an eligibility checker that gives you a rough idea before you pick up the phone.