64,600 insulation installations have taken place under the Great British Insulation Scheme, new data from the Department for Energy Security & Net Zero shows.
The Great British Insulation Scheme, or GBIS, is a government scheme to help people insulate their homes, make them more energy efficient and save money on their energy bills. The scheme targets two eligibility groups: low-income households and the general eligibility group, measured through council tax classifications
The statistics on the GBIS, published last week, reveal a recent decrease in measures installed under the Great British Insulation Scheme. Measures installed refers to the number of energy efficiency insulation installations under GBIS.
Between April 2023 and October 2024, the number of measures installed consistently increased, before dropping sharply in the following months. The average delivery per month in the last three months (November 2024 to January 2025) was 6,100, a decrease of 16% from the previous three-month average.
By the end of January 2025, around 50% of all measures installed were delivered to households in the low income eligibility group. Additionally, the most common measure so far has been cavity wall insulation, which accounts for 27,000 measures. This was followed by loft insulation, at 17,900 measures.
On a local level, the constituency of Gainsborough saw the highest number of GBIS measures installed per 100,000 households, 1,714. Leicester East followed with 1,636. London and Scottish constituencies, such as Holborn and St Pancras, Islington North and Na h-Eileanan an Iar, saw rates as low as 0 per 100,000.
About this map
The map below shows statistics on the Great British Insulation Scheme, between April 2023 and January 2025, by constituency. To explore detailed figures for your area, double-click on the map or click here to view the full-page version.
Geodata context
The new GBIS numbers come amidst some frustration with the scheme, which surfaced within the past few months. Figures suggest that, after the second winter following the scheme launch, only a small percentage of low income households have received support, from numbers initially predicted.
Additionally, issues between suppliers and the scheme persist. Many have reported that the scheme has led to additional costs as faulty installations took place.
A spokesperson from Fuel Poverty Action has commented: “Structural incentives prioritise quick and easy retrofits over quality and need, building in shoddy workmanship. Cowboy contractors – large and small – leave people’s homes with inadequate ventilation causing damp and mould, or with hanging wires, ill-fitting windows, and other products of unaccountable work instead of improved warmth, comfort, and health.”
“The intention is to guarantee energy savings, ending the gravy train whereby profiteers, both large and small, can soak up huge sums of public money while leaving the UK’s housing stock the worst in Europe.”