Question to the Department for Business, Energy and Industrial Strategy:

To ask the Secretary of State for Business, Energy and Industrial Strategy, what recent estimate his Department has made of the number of rural domestic properties off the gas grid that are not suited to being heated by a heat pump.

The evidence received from stakeholders in response to our 2018 call for evidence highlighted that electrification of heat is the one pathway to net zero proven to work at scale in homes off the gas grid. This is reinforced by BEIS modelling which suggests around 80% of off gas grid homes currently have sufficient energy efficiency and internal electrical limits to accommodate a heat pump. Our analysis also shows that this figure potentially rises to around 90% with fabric upgrades including draught-proofing, cavity wall insulation, floor, and loft insulation, and / or more major upgrades such as external wall insulation. From 2022, the Clean Heat Grant will provide support to off grid households switching to low carbon heating, and the Home Upgrade Grant scheme will provide support to low income off grid households by installing energy efficiency upgrades and low carbon heating.