PARCA Timeline Transmission Workgroup 4th July 2013 Rhys Ashman

Previous Timeline Shared with Industry July Aug Sept Oct Nov Dec Jan Feb Mar Apr Draft Workgroup Report Ofgem decision on Mod Panel decision on Consultation Consultation Period Final Workgroup Report Panel decision on Mod This was a very high level timeline It did not include updates to, and consultation of, Methodology Statements and the Generic Revenue Driver Methodology It also did not include the 56 day period of appeal of proposed Licence changes NG NTS & Ofgem undertake Licence Drafting Licence Change Consultation Period Ofgem Direct Changes to Licence

Draft Revised Timeline for discussion July Aug Sept Oct Nov Dec Jan Feb Mar Apr Customer Seminar Draft Workgroup Report Ofgem decision on Mod Panel decision on Consultation Consultation Period Final Workgroup Report Panel decision on Mod NG NTS & Ofgem undertake Licence Drafting Licence Change Consultation Period Ofgem Direct Changes to Licence 56 day period of appeal of proposed Licence changes Methodology Statements Consultation Period NG NTS request Ofgem consent for a derogation on Licence condition for independent examination of methodology statement changes NG NTS consider responses & make necessary updates Ofgem period of approval NG NTS request Ofgem consent for a derogation on Licence condition for independent examination of Generic Revenue Driver Methodology changes Generic Revenue Driver Methodology Statement Consultation Period NG NTS consider responses & make necessary updates Ofgem period of approval

Draft Revised Timeline Comments Extended period for Ofgem decision on Mod as falls over Christmas period July Aug Sept Oct Nov Dec Jan Feb Mar Apr Customer Seminar Draft Workgroup Report Licence and Methodology Statement Consultations undertaken together following mod decision Ofgem decision on Mod Panel decision on Consultation Consultation Period Final Workgroup Report Panel decision on Mod Licence Drafting to be completed before Christmas NG NTS & Ofgem undertake Licence Drafting Licence Change Consultation Period Ofgem Direct Changes to Licence 56 day period of appeal of proposed Licence changes Methodology Statements Consultation Period NG NTS request Ofgem consent for a derogation on Licence condition for independent examination of methodology statement changes NG NTS consider responses & make necessary updates Ofgem period of approval If independent examinations are required, this is likely to extend the timescales for approval of Methodology Statements and GRDM NG NTS request Ofgem consent for a derogation on Licence condition for independent examination of Generic Revenue Driver Methodology changes Generic Revenue Driver Methodology Statement Consultation Period NG NTS consider responses & make necessary updates Ofgem period of approval

Implications of Changes Draft Workgroup Report to be submitted one month later (now September) This results in Ofgem’s Mod decision being communicated in January rather than December (extended timescales included to account for Christmas period) Licence Drafting has been removed from the critical path but has been replaced by the 56 day period of appeal of licence changes The Licence and Methodology Statement Consultations occur in parallel following Mod Approval The Implementation of Mod, Licence changes, revised Methodology Statements, revised GRDM & revised Charging Statement to be at the end of April, rather than at the start.