Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, if he will make an estimate of the cost to the public purse of the (a) funding required to fully decarbonise the public sector and (b) adaptation costs from not fully decarbonising that sector.

The internal estimate made by the Department of Energy Security and Net Zero in 2022 suggests that fully decarbonising the public sector would cost between £25–30 billion. The Department is currently updating this based on more recent cost assumptions. No estimate has been made regarding the adaptation costs that may arise from not decarbonising the public sector.