Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, what estimate her Department has made of the cost to households of curtailing wind generation due to a lack of grid capacity.

The National Grid Electricity System Operator is responsible for managing constraints and annual network constraint costs for 2022 were £2.0bn (2023 prices). Constraints are a natural part of operating an efficient electricity system, and balancing the network by curtailing wind and turning up alternative generation can be an efficient way to manage these.

Necessary grid infrastructure improvements are being made to manage the level of constraints on the system and ensure the UK's homes can be powered by clean, green energy in future.