Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, with reference to his Department's publication entitled Electricity Generation Costs 2023, updated in November 2023, what the evidential basis is for the estimate that the cost for offshore windfarm commissioning in 2025 will be £44/MWh.

The Department’s Generation Costs Report 2023 is regularly updated based on externally reviewed evidence. These external reports are also published in the Energy Generation Cost Projections collection on GOV.UK.

The 44 £/MWh is based on cost and technical assumptions from an externally reviewed evidence base and internal modelling. These are shown in the technical annex to the report.