IGT UNC and Related Documents

The IGT UNC was implemented on the 1st of May 2007 following designation by the Gas and Electricity Markets Authority. The IGT UNC was implemented to streamline and harmonise the network code arrangements of the IGTs as much as possible. However, IGTs will still maintain their own network codes for those requirements that are not covered by the IGT UNC. If you require information or assistance in relation to the network code of an IGT please use the link in the menu on the left. More information about the IGTs can be found in the ‘Who are the IGTs’ section of the website.

From this page you can download the latest version of the IGT UNC and the Transition Document.

Previous release:

26th June 2015

Changes implemented into IGT UNC v9.2 as follows:

IGT066 – Aligning UNC with Licence conditions relating to European legislative change
IGT069S – The removal of K1.2(e)(ii) – use of Upstream System User agreements

A revised version of the Energetics INC has been released, incorporating:

  • ENE001F – Changes to the Energetics Gas Limited Individual Network Code following a change to its registered address.

An updated version of the CSEP NExA Tables Ancillary Document has been published (v1.1)

1st October 2015

The following changes were implemented into IGT UNC v9.3 as follows:

IGT063 – Change to the IGT UNC Gas Day to align with the Gas Day in EU Network Codes
IGT081F – Correcting Incorrect Definition for Project Nexus Go Live Date

Please note that the release dates for 2017 are:

24th February 2017

The following changes were implemented into IGT UNC v10.1 as follows:

IGT078 – Ancillary Document for the New Connections process
IGT079 – Adding Non-Domestic New Connections Framework Ancillary Document
IGT087 – Revision to the Modification Rules in Response to CGR3 – Significant Code Review Modifications
IGT088 – Determining Implementation of Self-Governance Modifications
IGT089- Revision to the Modification Rules in Response to CGR3 – Self Governance
IGT091- Amending rules for appointing Pipeline User Representatives
IGT093F- Changes to the CSEP NExA Tables Ancillary document to correct the effective dates on 2 of the tables
IGT094F- Amendments to file format types for IGT078 and IGT079 flows
IGT092A- Implementation of Non-Effective days for Project nexus Implementation, maintaining a minimum of two Supply Point System Business Days (Project Nexus transitional modification)

1st June 2017 (Extraordinary Release)

Changes implemented into IGT UNC v10.2 as follows:

Modifications Implemented;

IGT039 – Use of a Single Gas Transporter Agency for the common services and systems and processes required by the IGT UNC
IGT070S – Removal of redundant Ancillary documents following the implementation of Single Service Provision
IGT071S – Updating the IGT AQ Review Procedures Ancillary Document
IGT073S – Consequential Changes to the ‘Pipeline Operator Standards of Service Query Management’ Ancillary Document
IGT074S – Amendment of Password Protection Ancillary document
IGT076S – Amendment of RPC format in line with Single Service Provision
IGT077S – Amendment of Portfolio Extract format in line with Single Service Provision
IGT078 – Ancillary Document for the New Connections process – Post-Project Nexus amends
IGT079 – Adding Non-domestic New Connections Framework Ancillary Document – Post-Project Nexus amends
IGT083S – Correction to PSR Process to Support SSP Arrangements
IGT085F – SSP Housekeeping Changes
IGT086S – Central Data Service Provider – Implementing IGT UNC Changes to support FGO (TBC)
IGT090F – Changes to the IGT039 legal text following a review of UNC legal text
IGT096F – Correction to the IGT083 legal text now IGT078/79 are complete (TBC)
IGT097 – Provision for allowing consecutive estimated invoicing in the event of System Failure by the CDSP
IGT098F – Changes to the IGT UNC Code due to changes to the UNC Code (TBC)

Ancillary Document Changes Implemented;

INC changes;

Ancillary Documents removed due to the implementation of IGT070S;

  • Inspection Notification File Format and Response File
  • Unbundled Meter Reading File Formats
  • Meter Reading Validation Rules
  • Fax Forms
  • Third Party Metering and MAM ID Communication
  • Data Items Relevant to Smart Metering

30th June 2017

No Legal text changes are to be implemented into the IGT UNC June Code release, therefore, the current version v10.2 will remain in place. The only changes to Ancillary documents are as follows:

  • CSEP NExA Table V1.3

3rd November 2017

Changes implemented into IGT UNC v10.3 as follows:

IGT080S – Mandating IGT use of data as administered by the Pipeline Operators’ Agency for Shipper Transportation Billing
IGT100 – Reinstating Asset Query Codes
IGT101F – Amending IGT UNC legal text to reflect changes to the UNC made by UNC570

Ancillary Document Changes Implemented;

  • Pipeline Operation Standards of Service Query Management – Operational Guidelines v2.3

15th December 2017

Changes implemented into IGT UNC v10.4 as follows:

IGT095VV – Provision of access to Domestic Consumer data for Price Comparison Websites and Third Party Intermediaries

23rd February 2018

No Legal text changes are to be implemented into the IGT UNC February Code release, therefore, the current version v10.4 will remain in place.

22nd March 2018

Changes implemented into IGT UNC v10.5 as follows:

IGT104 – Permissions modification to allow the CDSP to release IGT supply point information under UNC MOD0520A
IGT105 – Creating permissions for the CDSP to release data to Meter Asset Providers

10th April 2018

Changes implemented into IGT UNC v10.6 as follows:

IGT106 – Provision of access to Domestic Consumer data for Suppliers

FUTURE IGT UNC RELEASES

29th June 2018

Changes implemented into IGT UNC v10.7 as follows:

IGT103 – Inclusion of reference within IGT UNC to UNC TPD Section G paragraph 2.12 – 2.14 inclusive – Meter Point Portfolio Reconciliation
IGT107F – Correcting the consumption adjustment reads within IGT UNC
IGT108F – Updating references for UNC434

2nd November 2018

PAST IGT UNC RELEASES

Previous versions of the IGT UNC and Ancillary Documents can be provided on request to the IGT UNC Code Administrator.

Document Title Description Type Pub Date Author
Current IGT UNC IGT UNC v10.7 Adobe, PDF 29/06/2018
Transition Document Version 4.0 Adobe, PDF 01/06/2007
Transition Document-consolidated Updated to 1 October 2007 Adobe, PDF 01/10/2007