August Extraordinary Release

We are pleased to confirm that version 13.29 of the IGT UNC went live with effect from 05:00 on 14th August 2026.

A copy of v13.29 (clean and tracked) can be found on the IGT UNC website, here.

Changes included in this Release

This Release incorporated changes to the IGT UNC for the following approved Modification:

• IGT176 – Changes to IGT UNC to enable UNC0887 ‘Facilitating Bi-Directional Connections Between IGT Pipelines and the NTS’

This Release also incorporated Phase 2 changes for the following approved Modification:

• IGT181 – Revision of Virtual Last Resort User and Contingent Procurement of Supplier Demand Event Triggers

Phase 1 changes for IGT181 went live on 23rd July 2026.

If any Parties have any comments with regards to this Code Release, please contact the Code Administrator.