September 2024
Source: data.gov.uk (2025-12-18)

Boiler Upgrade Scheme. The Boiler Upgrade Scheme (BUS) statistics provide information to monitor the uptake of the scheme, which contributes upfront capital grants to support the installations of low carbon technologies. These include air source heat pumps (ASHP), ground source heat pumps (GSHP), ground source heat pumps shared ground loops (GSHP SGL) and in some circumstances biomass boilers, in domestic and small non-domestic buildings.

Official statistics in development in relation to England & Wales. The ‘in development’ label has been removed and the statistics are now published as ‘official statistics’ with effect from February 2025.

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