Question to the Department for Energy Security & Net Zero:

To ask the Secretary of State for Energy Security and Net Zero, what his planned timetable is for adopting Standard Assessment Procedure 10.2, in the context of the Home Upgrade Grant 2 project; and whether residents that have missed out on solar batteries will be able to apply for their system to be upgraded.

We are introducing improvements to Energy Performance Certificate (EPC) modelling in early 2025, known as Reduced Data Standard Assessment Procedure 10 (RdSAP 10), to improve accuracy. EPC assessors will soon be able to record if a consumer has installed solar batteries. The Home Upgrade Grant (HUG 2) will run until March 2025 and will be succeeded by the Warm Homes: Local Grant (WH:LG). Details of the policy on retreating low-income households that received upgrades under HUG 2 were published on 23^rd September as part of the WH:LG guidance.