Great British Insulation Scheme Scoring Methodology
Guidance
- Publication date
- Scheme name
- Great British Insulation Scheme
The Great British Insulation Scheme scores matrix outlines the scores energy companies receive for measures installed under the scheme. You can find the matrix at the bottom of this page.
For detailed information on how the scores work, please refer to Chapter 6 of the Great British Insulation Scheme Delivery Guidance.
The scheme adopts the ECO4 partial project scores framework. Therefore, the scores matrix is identical to the ECO4 partial project score matrix, with the exception of ineligible measure types being removed.
If you have any questions about the scores or their application, please contact us at ECO@ofgem.gov.uk.
Scores Matrix version updates
Version 3 (22 April 2025)
Scores for Smart Thermostat measures have been added to the matrix.
Version 2 (20 July 2023)
An update was provided, with Hybrid Wall Insulation (HWI) measure types being added.
Version 1 (30 May 2023)
The Great British Insulation Scheme scores matrix was originally published on 30 May 2023.