Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, when he plans to publish the research commissioned on the costs of different approaches to decarbonising the most complex housing archetypes.

The Government commissioned research to gather data on the costs of different approaches to decarbonising the most complex housing archetypes, including the use of alternative low-carbon heating solutions where appropriate.

The results of this research are expected to be received by the end of the year, and we aim to publish findings by Spring/Summer 2026. This research supports the Warm Homes Plan which will be published by the end of the year. We are working across government on a comprehensive plan which aims to upgrade up to five million homes by accelerating the installation of efficient new heat technologies.