Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, pursuant to the Answer of 21 October 2025 to Question 82020 on Energy: Buildings, what estimate his Department has made of the potential impact of the (a) Warm Homes: Social Housing Fund, (b) Warm Homes: Local Grant and (c) Boiler Upgrade Scheme on (i) energy bills, (ii) carbon emissions (A) to date and (B) in each of the next three years and (iii) the nationally determined contributions target for 2030.

For Warm Homes: Social Housing Fund (WH:SHF) the Government publishes Official Statistics including WH:SHF Waves 1 and 2 measures installed, homes treated, carbon and bill savings. Statistics on WH:SHF Wave 3 and Warm Homes: Local Grant (WH:LG), summary business cases covering both schemes 2025/26-2027/28 and evaluation findings, will be published in due course.

There is a robust evaluation approach in place for the Boiler Upgrade Scheme (BUS). The Government will publish an Impact Assessment covering the BUS from 2025/26 through to 2029/30. An Impact Assessment for period 2022/23 to 2024/25 is already published. The Government publishes Official Statistics including BUS deployment volumes to date (Table 1.1) and Energy and Emissions Projections (EEP) containing the estimated emission savings generated by BUS installations.