Question

To ask the Secretary of State for Energy and Climate Change, with reference to the Impact Assessment for the Capacity Market, IA No: DECC0151, what the reasons are for the change between October 2013 and June 2014 in his Department's appraisal of the carbon cost of the capacity market.

The June 2014 Capacity Market Impact Assessment included updated assumptions (such as the latest peak demand assumptions). In addition a number of modelling changes were made between the October 2013 Capacity Market Impact Assessment and the June 2014 Capacity Market Impact Assessment. The reason for these changes was to better estimate the impact of the Capacity Market. These modelling changes are outlined in the June 2014 Capacity Market Impact Assessment. Please find the link below:

https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/324430/Final_Capacity_Market_Impact_Assessment.pdf.