1. Gas Customer Forum DN Interruption Update - Introduction
Mark Freeman
30th November 2007

2. DN Interruption Update Content
Mod 0174 – revised tender timescale
Incentives
Interaction with NTS Exit Reform
Systems
Key Dates

3. DN Interruption Update Mod 0174
Change the tender timeline to extend analysis time
Mod Panel recommended implementation 18 Oct 07
Ofgem decision 29 Nov 07
Implementation date 1 Apr 08 (in line with Mod 0090)

4. DN Interruption Update Mod 0174 timescales
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Tender
Opens
Tender
Closes
Apply for
NTS capacity
Site
Eligibility
Notification
NTS capacity
results
Publish
Requirements
Notify
Results
Retain tender timescales – move notification of results to end July

5. DN Interruption Update Incentives
Ofgem GDPCR updated proposals 24th Sep 07
Publish capacity outputs incentive consultation 24th Oct 07
Responses to incentive consultation 9th Nov 07
Publish final proposals and proposed licence conditions Dec 07
Application of Economic Test
Ofgem published note on 25th October

6. DN Interruption Update Interaction with NTS Exit Reform
Mod 0116
Ofgem open letter 26th October
Following CC decision all Mod 0116 Variants to be reconsidered
Ofgem information request to NTS 1st Nov
Requesting evidence on anticipated scarcity of flow flex
Info reqd by Mid December to inform reconsideration of Mod 0116
Review Group 0166
6 industry meetings so far (Sept – Nov)
Present Mod Proposal to Mod Panel Jan 08
Aiming for Mod implementation Apr 08 ?

7. DN Interruption Update Systems
User testing replanned because of additional activities on UK Link Technical Refresh project
Tender System Key Dates
11/2/08 User Testing starts
21/3 User Testing finishes
29/3 System Implementation
1/4 First Operational Files run
2/6 Bid Window opens
13/6 Bid Window closes
31/7 Notification of Results

8. DN Interruption Update Key Dates
Further Customer Engagement
Dec 07 – Mar 08
UAT
Start
11 Feb
UAT
Finish
21 Mar
Feb
Mar
Apr
Site
Eligibility
Notification
1 Apr
May
Jun
Jul
Aug
Sep
Oct
Tender
Opens
2 Jun
Tender
Closes
13 Jun
Apply for
NTS capacity
NTS capacity
results
Publish
Requirements
1 May
Notify
Results
31 Jul
Comments on Interruptible Capacity Methodology close out 20th Dec 07

9. Gas Customer Forum DN Interruption Update - Introduction
Any Further Questions ?
Mark Freeman
30th November 2007