Question to the Department for Energy Security & Net Zero:

To ask His Majesty's Government what was the cost of subsidies for the installation of heat pumps in the UK in the financial year 2024–25.

Between April 2024 – March 2025, the Boiler Upgrade Scheme paid out 25,144 vouchers for heat pumps (air source and ground source), to the cost of ~£189 million.

Other schemes delivered by the department such as the Home Upgrade Grant and Social Housing Decarbonisation Fund, do not provide a breakdown of funding costs specific to heat pump subsidies alone, as these schemes support a range of retrofit energy efficiency measures. The Government does publish data showing the average contribution costs for measures under these schemes, including for heat pumps.

This data is available at: Heat pump deployment statistics: June 2025, Home Upgrade Grant statistics: August 2025 and Social Housing Decarbonisation Fund statistics: September 2025