1. Generic Revenue Driver Methodology
May 2013

2. Overview
We are required to have submitted a Generic Revenue Driver Methodology by 1st September 2013 following the RIIO-T1 outcome and Licence changes
A draft GRDM was consulted on in October 2012 with the intention to update following final proposals
Required changes;
Removal of references to pipeline build complexity as this is no longer a factor in pipeline unit costs
Clarification of the trigger point for calculating RDs
The following slide represents a high level plan for the re-consultation to deliver this obligation.

3. Draft Plan Activity Detail Dates/Time Development
Update methodology based on initial consultation responses and accepted final proposals
May
Examples
Identify examples and apply methodology
May/June
(4 weeks)
UNC Tx Workgroup
Notify industry of intention to consult at June Tx Workgroup. Reminder and Q&A opportunity at July Tx Workgroup.
June & July
Consultation
Industry consultation
June/July
(28 days)
Revisions
Update based on consultation responses
July
Submission
Submit to Ofgem for approval
July/
August
Decision
Authority decision
September/
October
Effective
GRDM becomes effective – publish on NG website
1st November