Great British Insulation Scheme
Scheme status
This scheme is now closed to new installations.
About the scheme
The Great British Insulation Scheme delivered improvements to the least energy-efficient homes in Great Britain to tackle fuel poverty and help reduce energy bills.
The scheme complements the Energy Company Obligation (ECO4) scheme, yet unlike ECO4’s ‘whole house’ approach, this scheme will mostly deliver single insulation measures.
As well as supporting low-income and vulnerable households, it was also available to those living in homes with an Energy Performance Certificate rating of D-G, and within Council Tax bands A-D in England and A-E in Scotland and Wales.
The scheme placed an obligation on medium and large energy companies to deliver measures that result in reduced energy usage.
The scheme began in April 2023 and ended on 31 March 2026.
Government’s role
The Department for Energy Security and Net Zero set GBIS policy and legislation.
Ofgem’s role
We administered GBIS on behalf of DESNZ. Our duties include:
- calculating energy suppliers’ obligations and tracking performance against them
- processing supplier and delivery partner notifications of completed retrofits
- auditing suppliers and their notifications to minimise non-compliance
- evaluating and agreeing the outcomes of counter fraud investigations that suppliers have undertaken and progressing counter fraud activity where allegations of fraud have been made
- reporting on scheme progress to the Secretary of State of DESNZ