The Great British Insulation Scheme is not a universal grant
The Great British Insulation Scheme, managed by Ofgem, is not a flat-rate handout available to all homeowners. Eligibility for the full subsidy is determined by a household’s annual income, with a strict threshold of £31,000 set by the Department for Energy Security and Net Zero (DESNZ) in 2026 (GOV.UK, 2026).
Yes, the Great British Insulation Scheme is means tested. Households with a gross annual income of £31,000 or less qualify for free insulation under this Ofgem-managed programme in 2026.
- Eligibility requires a household income of £31,000 or less in 2026.
- Full subsidy covers cavity wall, loft, or solid wall insulation.
- Income is based on gross annual earnings before tax deductions.
- Automatic qualification for households on Income Support or Pension Credit.
- Properties in Council Tax bands A–D in England and Scotland are fast-tracked.
- The Great British Insulation Scheme is not a universal grant
- How the £31,000 income threshold is calculated
- Who automatically qualifies for the full subsidy
- Quick numbers key eligibility figures
- The direct answer is the Great British Insulation Scheme means tested?
- How to verify your eligibility and installer certification
- What the grant covers and what it does not
Households with an annual income of £31,000 or less are eligible for the full cost of insulation, including cavity wall, loft, or solid wall insulation. Households with an income above £31,000 are not eligible for any subsidy under this scheme. The scheme is targeted specifically at low-income households and those with low energy performance ratings, typically an EPC rating of D or below (Ofgem, 2026).
How the £31,000 income threshold is calculated
The £31,000 threshold is based on gross annual household income, which means income before tax and National Insurance deductions, and includes earnings from all adults living in the property. Certain benefits, such as Universal Credit or Pension Credit, are used to automatically qualify households, but the £31,000 cap remains the primary means test (Energy Saving Trust, 2026).
During the application process via the Energy Saving Trust (EST) portal, applicants must provide proof of income. Acceptable documents include a P60, a recent tax return, or a benefit award letter. The scheme applies to all UK nations, England, Scotland, Wales, and Northern Ireland, with the same income cap applied uniformly (GOV.UK, 2026).
Who automatically qualifies for the full subsidy
Households receiving any of the following benefits are automatically deemed eligible, regardless of their exact income: Income Support, Jobseeker’s Allowance, Pension Credit, or Universal Credit with a household income below £31,000. Properties in Council Tax bands A–D in England and Scotland are also fast-tracked for eligibility, provided the household income is below the threshold (Ofgem, 2026).
The scheme covers all four UK nations with identical income criteria. No exceptions are made for high-cost properties or exceptional circumstances, even if the property has poor insulation and the household income is only marginally above the cap (GOV.UK, 2026).
Quick numbers key eligibility figures
| Eligibility criteria | Figure | Source |
|---|---|---|
| Income threshold | £31,000 gross annual household income | DESNZ, 2026 |
| Maximum grant value (cavity wall) | £2,500 | DESNZ, 2026 |
| Maximum grant value (loft) | £1,500 | DESNZ, 2026 |
| Maximum grant value (solid wall) | £5,000 | DESNZ, 2026 |
| Minimum property EPC rating required | D or below | DESNZ, 2026 |
All figures are sourced from the Department for Energy Security and Net Zero (DESNZ) guidance published in 2026 (GOV.UK, 2026).
The direct answer is the Great British Insulation Scheme means tested?
Yes, the Great British Insulation Scheme is means tested. The primary criterion is a gross household income of £31,000 or less, verified through a standard application process. Households above this threshold do not receive any funding from the scheme, even if their property has poor insulation (GOV.UK, 2026).
The means test is applied by the scheme administrator (Ofgem) via the EST application portal. No exceptions are made for high-cost properties or exceptional circumstances. If your household income exceeds £31,000, you will need to explore alternative funding options or pay for insulation privately.
How to verify your eligibility and installer certification
To check your eligibility, use the Ofgem-approved online tool at gov.uk/great-british-insulation-scheme. You will need to provide your income details and property information. Once approved, all insulation work under the scheme must be installed by a company certified by the Microgeneration Certification Scheme (MCS) for cavity and solid wall insulation, and by TrustMark for loft insulation (MCS, 2026; TrustMark, 2026).
If the insulation work affects gas appliances, for example, cavity wall insulation near a flue, the installer must also be registered with the Gas Safe Register (Gas Safe Register, 2026). Homeowners should request the installer’s MCS certificate number and verify it on the MCS register (mcscertified.com) before work begins.
What the grant covers and what it does not
The grant covers the full cost of installing cavity wall insulation, loft insulation (up to 270mm), or solid wall insulation (internal or external), depending on your property type. The grant is paid directly to the installer, so the homeowner pays nothing if eligible (Energy Saving Trust, 2026).
The grant does not cover the cost of removing existing insulation, repairing structural defects, or upgrading heating systems such as boilers or heat pumps. If your property requires structural repairs before insulation can be installed, those costs are the homeowner’s responsibility.
how to apply for the Great British Insulation Scheme
alternatives to the Great British Insulation Scheme for higher-income households
Frequently Asked Questions
The income threshold is £31,000 gross annual household income as set by DESNZ in 2026 (GOV.UK). Households earning above this do not qualify for any subsidy.
Yes, the scheme covers cavity wall, loft, and solid wall insulation (Ofgem, 2026). Eligibility depends on income and energy performance rating.
You apply through the Energy Saving Trust portal. This provides proof of income like a P60 or benefit award letter (Energy Saving Trust, 2026).
Households on Income Support, Jobseeker's Allowance, Pension Credit, or Universal Credit with income below £31,000 automatically qualify (Ofgem, 2026).
Yes, the scheme applies uniformly across England, Scotland, Wales, and Northern Ireland with the same £31,000 income cap (GOV.UK, 2026).
