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

To ask the Secretary of State for Business, Energy and Industrial Strategy, how many households in fuel poverty have had their homes upgraded since January 2015 to band (a) C, (b) D and (c) E for energy efficiency.

The Department does not hold the number of households in fuel poverty that have had their homes upgraded since January 2015.

Due to the nature of the survey, on which the fuel poverty statistics are based, the department cannot track when an energy efficiency measure is installed in a property and the resulting change in efficiency rating.

The fuel poverty trends tables estimate the number of households in each energy efficiency band between 2003 and 2015, these tables can be found here:

https://www.gov.uk/government/statistics/fuel-poverty-trends-2017.