On 27th September 2013, Ofgem published modifications to the ET1 Price Control Financial Handbook and Price Control Financial Model (PCFM). These notices modified the ET1 Handbook and PCFM from the original versions in effect at 1 April 2013 (the start of ET1 Price Control Period). The summary of the changes can be found on RIIO-ET1 PCFM - summary of recent modifications page.
The updated PCFM formally comes into effect on 27 November 2013 and will be used for the Annual Iteration Process that takes place by 30 November 2013. This Annual Iteration Process will calculate the value of the licensee's Base Revenue (the MOD value) . This will apply in the formula for each licensee’s Base Transmission Network Revenue for Relevant Year 2014/15. Please see the links in right hand box.
References
RIIO ET1 Price Control Financial Model for the Annual Iteration Process that will take place by 30 November 2013.
ET1 Price Control Financial Handbook