Recommendation 23

We asked DESNZ how it was learning lessons from the roll out of heat pumps. It explained that it had already learned some lessons, such as about the level of grant driving demand, and that it would continue to evaluate the roll out of the Boiler Upgrade Scheme “very carefully” to see if there were further refinements to increase uptake further. It added that a first interim evaluation report for the Boiler Upgrade Scheme was due later in 2024, but it did not outline what the evaluation would cover.41 38 Qq 48, 49, 60; C&AG’s Report, para 3.3. The Microgeneration Certification Scheme (MCS) is a quality assurance scheme. The Boiler Upgrade Scheme requires heat pumps to be installed by MCS-certified installers. 39 Qq 48, 60 40 Q 48; C&AG’s Report, paras 17, 19, 3.3 41 Qq 10, 39 16 Decarbonising home heating 3 The pathway to decarbonising home heating Supporting all households