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UK Government Scheme · Energy supplier funded

Great British Insulation Scheme 2026

Free or heavily subsidised home insulation for UK households in lower council tax bands with an inefficient property.

Last updated: July 2026 · Reviewed against official gov.uk guidance

Overview

The Great British Insulation Scheme (GBIS) is funded by the UK's largest energy suppliers under an obligation set by government and regulated by Ofgem. It focuses on single, high-impact insulation measures that are quick to install and immediately cut heating demand.

Typical savings are £200–£400 a year on energy bills, with loft and cavity wall insulation delivering the fastest payback. Around 300,000 homes are targeted across Great Britain.

Eligibility at a glance

EPC rating

Property rated D, E, F or G on a current Energy Performance Certificate.

Council tax band

Bands A–D in England, A–E in Scotland and Wales. Northern Ireland is not covered.

Household

Open to owner-occupiers and private tenants. Low-income households on qualifying benefits receive full funding.

How to apply

  1. Check your EPC rating and council tax band.
  2. Use the gov.uk eligibility checker or contact your energy supplier.
  3. A TrustMark-registered assessor surveys your home.
  4. The recommended measure is installed and signed off under PAS 2035.
Official gov.uk: apply for the Great British Insulation Scheme

Frequently asked questions

It is an energy-supplier funded scheme (formerly ECO+) that pays for a single insulation measure — usually loft or cavity wall insulation — in less efficient UK homes, cutting heating bills by up to around £400 a year.

Your home must have an EPC rating of D or below and be in council tax band A–D in England, or A–E in Scotland and Wales. Low-income households on qualifying benefits get the broadest support, but the general group is open to most households in those bands.

Low-income and benefit-receiving households usually get it fully funded. Households qualifying under the general group typically receive a substantial subsidy and pay a contribution towards the balance.

Loft insulation, cavity wall insulation, solid wall insulation (internal or external), room-in-roof, underfloor, flat roof, park home and pitched roof insulation. Most homes receive one measure.

Use the official gov.uk eligibility checker, or contact your energy supplier directly. Work must be carried out by a TrustMark-registered installer and signed off under PAS 2035 standards.

Not sure if you qualify?

Check in 30 seconds which UK home energy grants — insulation, boilers or heat pumps — you may be eligible for.

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