2. Stefan Leedham Transmission Workstream 2nd November 2006
UNC MOD PROPOSAL 0121: The Provision of Ex-Post Demand Information for all NTS Offtakes
Stefan Leedham
Transmission Workstream
2nd November 2006

3. INTRODUCTION Information currently available
Information that would be released
Exit points impacted
Timing of Publication
Interaction with Modification Proposal 0116
Other Issues

4. INFORMATION CURRENTLY AVAILABLE
Report
Timing
Entry Point
Sub-Terminal
Terminal
Aggregate N/S
National
Supply Side
Energy Flow Data
Real Time 
NSTAFF
H+1
NTSAPF
NTSEOD
D+1
Demand Side
SISR03
D-1
NB92
SISR04

5. INFORMATION THAT WOULD BE RELEASED
Total Physical Flows for the previous gas day
Published at D PM
For all Exit Points from the NTS
Individual LDZ offtake from the NTS
Individual NTS connected storage site
Individual NTS connected power station
Individual NTS connected interconnectors
Individual NTS connected industrial load
Total Shrinkage Volumes for the NTS for the previous gas day, disaggregated into Own Use Gas and Unaccounted for Gas
Published on National Grid’s public website

6. EXIT POINTS IMPACTED 122 LDZ offtakes from the NTS
38 Power Stations (33 according to National Grid)
17 Industrial Sites
10 Storage sites (9 according to National Grid)
2 Interconnectors

7. TIMING OF PUBLICATION
Data to be published after the gas day at 12.00PM
Data to be updated up to D+5 as additional information becomes available
No requirement to publish data if it is not available to National Grid

8. INTERACTION WITH EXIT REFORM PROPOSAL
Mod 121 would release total physical offtake from the NTS by exit point at D PM stage – not flows up to
In Business Rules accompanying Mod 116 National Grid publish information:
By NTS Exit Point on volume of flat capacity allocated:
24 hours after long term prevailing allocation,
24 hours after completion of medium term auction
1 hour after completion of day ahead firm auction
1 hour after completion of day ahead interruptible auction
By NTS Exit zone the volume of flexibility capacity allocated.

9. OTHER ISSUES Data ownership
TPD Section V 5.8
TPD Section M (b)
Requirements to make information available to National Grid
TPD Section M 4.2.1, 4.5 & 5.2
Commercially Confidential Information
Need for aggregation?

10. THANK YOU