The following list set out all live Modifications, including those under development, currently out for consultation, awaiting Authority Direction or awaiting implementation. Click on each Modification to visit the individual Modification page, where you can find all related documentation and information.
Information on live Modifications can also be found in the ‘Modifications Register‘.
Information on closed Modifications, which are Modifications that have been implemented, withdrawn or rejected, can be found on the ‘Closed Modifications’ page of our website.
Live Modifications
IPL043 – Housekeeping Updates: This Modification was raised as a Fast Track Self-Governance Modification Proposal. The Fast Track objection window is open until 5pm on 23rd October 2026. Any parties wishing to raise an objection to this Modification being Fast Track should contact the Code Administrator (IGTUNC@talan.com).
QPL043 – Housekeeping Updates: This Modification was raised as a Fast Track Self-Governance Modification Proposal. The Fast Track objection window is open until 5pm on 23rd October 2026. Any parties wishing to raise an objection to this Modification being Fast Track should contact the Code Administrator (IGTUNC@talan.com).
GPL047 – Housekeeping Updates: This Modification was raised as a Fast Track Self-Governance Modification Proposal. The Fast Track objection window is open until 5pm on 23rd October 2026. Any parties wishing to raise an objection to this Modification being Fast Track should contact the Code Administrator (IGTUNC@talan.com).
IGT183 – Maintenance criteria for Emergency Contact data held in Central Systems: The Final Modification Report will be presented to IGT UNC Panel in October. This Modification relates to UNC0926S.
IGT180 – CDSP Obligations required for the introduction of the Gas Shipper Obligation: This Modification is currently with the Workgroup for development and assessment. This Modification is related to UNC0922.
All other live Modifications are either awaiting Authority Direction, implementation or are out for consultation as per below.
Live Consultations
There are currently no IGT UNC Modifications out for consultation.
Modifications Awaiting Authority Direction
CSL01 – Exclusion of Standalone Networks from IGT UNC: The Final Modification Report was issued to the Authority on 1st June 2026, with an expected decision date of 30th September 2026.
Modifications Awaiting Implementation
IGT184 – RG008 Housekeeping: Parts CI-CV, L, O, and IGT UNC Derogations Guidance: This Fast Track Self-Governance Modification Proposal was approved by the IGT UNC Panel on 25th September 2026, for implementation on 6th November 2026 (as part of the November 2026 Release.)