Draft gas transmission reporting and guidance (RIIO-GT3)
- Publication type:
- Consultation
- Publication date:
- Closing date:
- 25 August 2026
- Status:
- Open
- Topic:
- Energy network price controls,
- Gas transmission
- Subtopic:
- RIIO-T3: transmission price control 2026 to 2031
Proposed annual reporting framework for the gas transmission sector for the RIIO-3 price control period.
Consultation description
We are consulting on updates for the RIIO‑GT3 period (2026 to 2031) to the:
- Regulatory Instructions and Guidance (RIGs)
- Regulatory reporting pack (RRP) data template
- NARM reporting pack
These explain how National Gas Transmission Plc (the Licensee) will report cost, output and performance data to Ofgem.
The proposals aim to:
- improve the clarity, consistency and comparability of reporting
- align requirements with RIIO‑GT3 decisions
- support effective regulatory monitoring
Proposals have been informed by:
- RIIO-GT3 business plan template assessment
- data review
- stakeholder engagement
Who should respond
National Gas Transmission Plc.
How to respond
Please submit your views on the proposed modifications on or before close of business on 25 August 2026 by emailing RIIO3@ofgem.gov.uk.
Our normal practice is to publish non-confidential responses on our website. We prefer to receive responses in electronic format to aid with publication.
We welcome your views. They will help ensure the framework remains proportionate, practical, and fit for purpose.