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.

Please note that the release dates for 2012 are:

24th February - NO RELEASE OF THE iGT UNC or INCs (No Modifications for Implementation) Version 6.0 of the iGT UNC remains the current version. 

29th June

2nd November