Current Status: Implemented
This approved Modification was implemented on 14th August 2026.
Summary of Modification
This Modification identifies the requirement for and aims to make changes to IGT UNC to enable UNC0887 ‘Facilitating Bi-Directional Connections Between IGT Pipelines and the National Transmission System (NTS)’ ‘to be implemented by including its operator, National Gas Transmission (NGT) as a ‘Large Transporter’ and to apply the core IGT concept of ‘deeming flow’ to and from the National Balancing Point (NBP), whilst replicating as closely as practicable the existing NTS ‘direct connect’ exit and entry arrangements that UNC Shippers use.
Progression Timetable
| Modification Raised | 19th March 2025 |
| Initial consideration by Workgroup | 10th April 2025 |
| Workgroup Report presented to Panel | 25th July 2025 |
| Draft Modification Report issued for consultation | 28th July 2025 |
| Consultation close-out date | 18th August 2025 |
| Final Modification Report available for Panel | 21st August 2025 |
| Modification Panel decision | 29th August 2025 |
| Submitted to the Authority | 2nd September 2025 |
| Authority determination received | 1st December 2025 |
| Implementation date | 14th August 2026 |
Documentation
| Document | Description | Document Type | Author | Date |
| IGT176 | Notice of Implementation (v2.0) | Adobe PDF | Code Administrator | 31/07/2026 |
| IGT176 | Notice of Implementation (v1.0) | Adobe PDF | Code Administrator | 02/12/2025 |
| IGT176 | Authority Decision Letter | Adobe PDF | Ofgem | 01/12/2025 |
| IGT176 | Final Legal Text (v1.0) | Adobe PDF | CNG | 02/09/2025 |
| IGT176 | Final Modification Report (V1.0) | Adobe PDF | Code Administrator | 02/09/2025 |
| IGT176 | Final Modification Report (V0.1) | Adobe PDF | Code Administrator | 21/08/2025 |
| IGT176 | Advanced Fuel Plants Consultation Response | Adobe PDF | Advanced Fuel Plants | 21/08/2025 |
| IGT176 | BUUK Consultation Response | Adobe PDF | BUUK | 21/08/2025 |
| IGT176 | Ceres Energy Consultation Response | Adobe PDF | Ceres Energy | 21/08/2025 |
| IGT176 | CNG Services Consultation Response | Adobe PDF | CNG Services | 21/08/2025 |
| IGT176 | Grosvenor Green Gas Consultation Response | Adobe PDF | Grosvenor Green Gas | 21/08/2025 |
| IGT176 | National Gas Transmission Consultation Response | Adobe PDF | National Gas Transmission | 21/08/2025 |
| IGT176 | SGN Consultation Response | Adobe PDF | SGN | 21/08/2025 |
| IGT176 | Draft Modification Report (v2.0, Code Administrator email updated) | Adobe PDF | Code Administrator | 04/08/2025 |
| IGT176 | Draft Modification Report v1.0 | Adobe PDF | Code Administrator | 28/07/2025 |
| IGT176 | Draft Legal Text v0.4 (clean) | Adobe PDF | CNG | 18/07/2025 |
| IGT176 | Draft Modification Report V0.1 | Adobe PDF | Code Administrator | 18/07/2025 |
| IGT176 | Workgroup Report V1.0 | Adobe PDF | Code Administrator | 18/07/2025 |
| IGT176 | Draft Legal Text v0.3 (clean) | Adobe PDF | CNG | 03/07/2025 |
| IGT176 | Draft Legal Text v0.3 (tracked from v0.2) | Adobe PDF | CNG | 03/07/2025 |
| IGT176 | Legal Text Support Document v1.0 | Adobe PDF | CNG | 03/07/2025 |
| IGT176 | Draft Workgroup Report v0.1 | Adobe PDF | Code Administrator | 03/07/2025 |
| IGT176 | Draft Legal Text v0.2 (clean) | Adobe PDF | CNG | 05/06/2025 |
| IGT176 | Draft Legal Text v0.2 (tracked from v0.1) | Adobe PDF | CNG | 05/06/2025 |
| IGT176 | Draft Legal Text v0.1 | Adobe PDF | CNG | 30/04/2025 |
| IGT176 | Modification Proposal Form (v1.0) | Adobe PDF | CNG | 19/03/2025 |