Question to the Department for Business, Energy and Industrial Strategy:

To ask the Secretary of State for Business, Energy and Industrial Strategy, what data he holds on the number of (a) new and (b) existing homes in which energy efficiency measures were installed in each year since 2010.

Information regarding the number of existing households receiving energy efficiency measures through Government funded schemes from 2013 are in Table 9.1 accompanying the Household Energy Efficiency Statistics, detailed report 2021 here.

The Carbon Emissions Reduction Target (CERT) and Community Energy Saving Programme (CESP) were Government schemes prior to 2013. More information can be found here and here.

The Government does not hold information on installations in new households as these schemes are aimed towards retrofitting households. Information on energy performance of new dwellings is included in the statistics on Energy Performance of Buildings Certificates here and as Open Data here.