The Uniform Network Code
On this page you are able to access a full version of the Uniform Network Code. The current version is 2.69, as at 06 May 2008.
If you already have an up to date copy of the UNC and only require the latest set of updated files, please select the Updates link on the left of this page.
Binder 1 - General
01 January 2006
General Front Cover
01 January 2006
Table of Contents
06 May 2008
Defined Terms Listing
06 May 2008
Modification History
01 January 2006
UNC Introduction
01 January 2006
TD - Table of Contents
01 January 2006
TDI - General
01 January 2006
TDIIA - General
06 May 2008
TDIIB - Relevant Transporters
24 April 2008
TDIIC - Transitional Rules
21 July 2006
TDIID - Flexibility Bidding
01 January 2006
TDIII - Offtake Arrangements Document (inc. Part IV - Modification Rules)
16 November 2006
Modification Rules
01 January 2006
GTA - Dispute Resolution
01 March 2006
GTB - General
01 April 2008
GTC - Interpretation
Binder 2 - Transportation Principal Document
01 January 2006
TPD Front Cover
01 January 2006
TPD Table of Contents
05 December 2007
Section A - System Classification
02 May 2008
Section B - System Use and Capacity
01 January 2006
Section C - Nominations
01 November 2007
Section D - Operational Balancing and Trading Arrangements
24 April 2008
Section E - Daily Quantities, Imbalances and Reconciliation
01 February 2007
Section F - System Clearing, Balancing Charges and Neutrality
06 May 2008
Section G - Supply Points
05 December 2007
Section H - Demand Estimation and Demand Forecasting
01 February 2008
Section I - Entry Requirements
22 April 2008
Section J - Exit Requirements
21 July 2006
Section K - Operating Margins
01 March 2006
Section L - Maintenance and Operational Planning
24 April 2008
Section M - Supply Point Metering
01 January 2006
Section N - Shrinkage
25 June 2007
Section O - System Planning
05 December 2007
Section Q - Emergencies
05 December 2007
Section R - Storage
24 April 2008
Section S - Invoicing and Payment
05 December 2007
Section U - UK Link
06 May 2008
Section V - General
05 October 2007
Section X - Energy Balancing Credit Management
21 July 2006
Section Z - National Grid LNG Storage Facilities
Binder 3 - Offtake Arrangements Document
01 January 2006
OAD Front Cover
01 January 2006
OAD Table of Contents
01 January 2006
Section A - Scope and Classification
01 January 2006
Section B - Connection Facilities
21 July 2006
Section C - Safety and Emergency
01 January 2006
Section D - Measurements
01 January 2006
Section E - Telemetry, etc
01 January 2006
Section F - Determination of Calorific Value
01 January 2006
Section G - Maintenance
05 December 2007
Section H - NTS Long Term Demand Forecasting
01 April 2008
Section I - NTS Operational Flows
01 January 2006
Section J - LDZ/LDZ Offtakes - Planning and Operational Flows
22 October 2007
Section K - LDZ System Entry Points
01 January 2006
Section L - Cost Recovery and Invoicing
01 January 2006
Section M - Information Flows
01 January 2006
Section N - General
01 January 2006
Appendices
Consents to Modify
07 September 2006
Consents to Modify
The Gas Transporters Licence provides, subject to Ofgem approval, for the Uniform Network Code to be modified without the need to go through the full modification process. This 'Consent to Modify' ...
Many of the files available to download on this page are Acrobat PDF files. To access these you will need Acrobat Reader which is available from the Adobe web site.