Written question asked by Al Pinkerton (Liberal Democrat) on Monday, 22 June 2026, in the House of Commons. It was due for an answer on Wednesday, 24 June 2026. It was answered by Martin McCluskey (Labour) on Tuesday, 30 June 2026 on behalf of the Department for Energy Security and Net Zero.

Electricity: Heat Pumps

Question: To ask the Secretary of State for Energy Security and Net Zero, what assessment his Department has made of the potential impact of heat pump deployment on winter peak electricity demand.

Answer: The Department assesses that heat pump deployment, as part of the wider electrification of heat, is expected to increase annual and winter peak electricity demand over time. The precise impact depends on factors including the rate of deployment, heat pump performance, weather conditions and the availability of consumer-led flexibility. The Department models a range of plausible future demand trajectories to ensure that the electricity system remains flexible, resilient, and able to maintain security of supply under different pathways to net zero.

Secondary information