Written Question·Department for Energy Security and Net Zero·UIN 79902

Public Sector: Carbon Emissions

Tabled: 10 October 2025

Answered: 20 October 2025

Question

Carla Denyer

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 secto

Answer

Martin McCluskey

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...

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