Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, what the total cost to the public purse of curtailment of onshore wind turbines in England was in the last three years.

The Department does not hold this information. A summary of constraint costs is publicly available at https://www.neso.energy/data-portal/constraint-breakdown, and network constraint costs for 2023 were £1.4bn. The National Energy System Operator is responsible for managing constraints, which are a natural part of operating an efficient electricity system. These costs are not funded by the public purse, but instead by suppliers via Balancing Services Use of System charges. As part of Clean Power 2030, the Government is working to develop the necessary grid infrastructure and manage the level of constraints to create a cheaper and secure energy system for Britain.