Funding for Cavity Wall Insulation

Great British Insulation Scheme (GBIS) Funding 2022-2026

About the Great British Insulation Scheme (GBIS)

Three Rivers District Council, in partnership with E.ON, are offering eligible residents FREE (fully funded) cavity wall insulation through the Great British Insulation Scheme (GBIS) to help residents improve the warmth of their homes and save money on their energy bills.

Benefits of Cavity Wall Insulation

  • Save money on your energy bills - lower your heating costs by reducing heat loss from your home.
  • Make your home more comfortable - Enjoy a more consistent and comfortable temperature throughout the year; stay warmer in winter and cooler in summer.
  • Reduce your carbon footprint - Help the environment by using less energy to heat your home.
  • Increase the value of your home – an energy efficient property can be more desirable to buyers.

GBIS in Three Rivers

The Council is working in partnership with E.ON – an obligated energy company - to deliver a coordinated GBIS programme locally, but you do not have to be an E.ON energy customer to benefit.

You may have received a letter from Three Rivers District Council and E.ON inviting you to apply for GBIS funding.

If you qualify for GBIS funding, E.ON’s team will help you access the funding, provide end-to-end customer support, and manage accredited installers to ensure works are completed to a high standard. If you meet the eligibility criteria, E.ON will arrange a free home survey to confirm your home's suitability for cavity wall insulation.

If you think you may be eligible for free cavity wall insultation, please contact E.ON to apply:

Eligibility criteria

You may qualify for free cavity wall insulation through the Great British Insulation Scheme (GBIS) if you are a homeowner and your property has an Energy Performance Certificate rating (EPC) of D, E, F, or G (privately rented homes must have an EPC of D or E) and if any of the below statements apply to you:

  • Your property’s Council Tax band rating is A to D in England, or
  • Your household income is under £31,000 per year, or
  • A household member receives qualifying benefits (list below), or
  • A household member has been identified by an NHS doctor or GP as vulnerable, due to having a health condition that may be impacted by living in a cold home. This includes conditions such as heart disease, respiratory problems, weakened immune systems, or limited mobility.

You can check your EPC rating by searching your postcode on:

You can check your property’s Council Tax band rating here:

Qualifying benefits include

  • Income Support
  • Income-based Jobseeker's Allowance
  • Income-related Employment and Support Allowance (ESA)
  • Pension Credit (Guarantee Credit)
  • Working Tax Credit
  • Child Tax Credit
  • Universal Credit
  • Housing Benefit

If you do not qualify for GBIS funding, you can contact the Council’s Home Energy Support Service provided by Better Housing Better Health, for free, impartial advice on saving money on your energy bills and improving the energy efficiency of your home. The Better Housing Better Health team can also help you identify alternative sources of funding for home energy efficiency improvements.

Statement of Intent (Flexible Eligibility Criteria)

The publication of this Statement of Intent (SOI) enables Three Rivers District Council to provide additional eligibility criteria under the Energy Company Obligation (ECO) and Great British Insulation Scheme (GBIS) Local Authority Flexibility route. Please see the document below for the latest version of the Council's Statement of Intent which details the Council’s Flex criteria in full:

Current SOI (Version 8): ECO4 and GBIS SOI Three Rivers Version 8 - 4 September 2023 (PDF)

Previous withdrawn SOIs:

Version 7 - withdrawn on 04 September 2023

Version 6 - withdrawn on 14 March 2023

(Webpage updated May 2024).