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

To ask the Secretary of State for Business, Energy and Industrial Strategy, what estimate he has made of the cost to the public purse of ensuring that the housing stock in each local authority area up to Energy Performance Certificate bands (a) B and (b) C.

In the Clean Growth Strategy, we set out our aspiration that as many homes as possible will be upgraded to an Energy Performance Certificate (EPC) Band C by 2035, where practical, cost effective and affordable.

We estimate that, to meet our stated ambition, cost-effective improvements to homes would cost in the region of £35-65bn, though there would also be significant benefits to consumers from lower energy bills. We do not hold data on how this cost breaks down by local authority area, which would depend on a wide range of factors.