Cost of Debt Indexation Model 31 October 2016

Decision
Publication date
Industry sector
Distribution Network
Transmission Network

In the RIIO Price Controls, the Corporate Debt Expenditure (CDE) variable value is updated on an annual basis with reference to a trailing average index of debt costs. This model calculates CDE for all four RIIO Price Controls that has been used for the Annual Iteration Process 2016.

  • For GD1, GT1 and most ET1 licensees, the trailing index covers a 10 year period up to the 31 October 2016.
  • For SHE-Transmission, the index also covers 10 years but with bespoke weightings.
  • For ED1 Fast-track, the trailing index covers a 10 year period up to the 31 October 2016.
  • For ED1 Slow-track, the trailing index covers a 12 year period up to the 31 October 2016, and will extend by a year at each AIP.