Question to the Department for Energy Security & Net Zero:

To ask His Majesty's Government what assessment they have made of the relative merits of heat transfer coefficients measured through smart meter enabled thermal efficiency ratings compared to those produced using the current Energy Performance Certificate methodology.

Smart Meter Enabled Thermal Efficiency Ratings (SMETERs) can provide valuable additional insight on the thermal performance of homes in practice with potential to play an important role in delivering warmer homes more affordably. Work is underway to establish a quality assurance system to support use of SMETERs from end-2026, and we are exploring further applications under the Warm Homes Plan.

In the Home Energy Model: Energy Performance Certificates consultation, available at https://www.gov.uk/government/consultations/home-energy-model-energy-performance-certificates, we sought views on an option for recording SMETER Heat Transfer Coefficients as supplementary information alongside EPC ratings. We are reviewing responses and will respond in due course.