Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, whether her Department has made an assessment of the effectiveness of hybrid heat pumps in reducing household emissions.

The emission reduction potential of hybrid heat pumps is dependent on several factors, including the proportion of heating delivered by the heat pump.

The Electrification of Heat Demonstration Project, delivered by Energy Systems Catapult, showed that, for hybrid heat pumps installed under the project, the median proportion of space heating delivered by the heat pump was around 40%.

The Government will continue to gather further evidence and monitor technological and market developments.