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

To ask the Secretary of State for Business, Energy and Industrial Strategy, pursuant to the Answer of 28 March 2018 to Question 133971, for what reasons that answer does not contain information on the difference between the installation cost figures used in the 2016 cost-benefit analysis update and energy suppliers’ current data on installation costs.

The most recent data on energy suppliers’ installation costs are not directly comparable to the data used in the 2016 Cost-Benefit Analysis.

We are analysing the latest data and will ensure that it is provided on a like-for-like basis in the Cost-Benefit Analysis update in 2019, so that valid comparisons can be made.