Harmonised Transmission Tariff Methodology for Gas Consultation Paper

Open15 May, 2026, 10:00 - 15 Jul, 2026, 17:00

In accordance with the Tariff Network Code (TAR NC) (Regulation (EU) 2017/460), Member States are required to consult on the methodology used to calculate gas transmission tariffs. Under Article 26 of the TAR NC, transmission tariff methodologies must be reviewed and consulted upon at least every five years. In Ireland, the most recent transmission tariff methodology review was completed by the CRU in 2019.

This consultation meets the periodic review requirement of Ireland’s gas transmission tariff methodology, as required under the TAR NC. The consultation paper undertakes a comprehensive review of the existing methodology against the criteria set out in Article 7 of the TAR NC, which are used as guiding principles. It provides both qualitative and quantitative analysis to support any proposed changes and invites stakeholder views on these proposals prior to the CRU making a final decision.

In line with the requirements of the TAR NC, the consultation period for this review is two months, enabling stakeholders to fully consider and respond to the issues raised

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Questions

Q1. Views on the CRU’s proposal to continue to apply the Matrix Reference Price Methodology?

Q2. Views on the CRU’s proposal to maintain the methodology for setting the Corrib Linkline element?

Q3. What are your views on the CRU’s proposal to continue to apply the 33:67 entry/exit split?

Q4. Views on the CRU’s proposal to continue to apply the 90:10 capacity/commodity split?

Q5. Views on the CRU’s proposal to update the input values used in the calculation of the expansion constant and annuitisation factor?

Q6. Views on the CRU’s criteria and considerations for assessing the possible provision of LNG discounts in the future?

Q7. Views on the CRU’s view that a single notional entry point for RNG tariffs remains appropriate?

Q8. Views on the CRU’s proposal to derogate from the requirements for applying a discount to RNG capacity entry tariffs under Article 18 of Regulation (EU) 2024/1789?

Q9. Views on the CRU’s proposal to keep the current multipliers and seasonal factors unchanged and continue monitoring through the annual Article 28 consultations?

Q10. Views on moving in the future towards a flatter seasonal factor profile.?

Q11. Views on increasing the combined multiplier and seasonal factor profile for Daily and Within-Day Standard Capacity Products to TAR NC maximum levels and beyond in duly justified cases?

Q12. Do you have any views on the potential removal of short-term capacity products at exit?

Q13. Views on the CRU’s proposal to maintain the tariff discount factors for VRF products at Moffat and Gormanston?

Q14. Analysis evidence or data supporting a change to the CRU’s VRF factors? Please provide any material that may assist the CRU in assessing possible changes

Q15. Views on market developments outlined that may warrant changes to seasonal factors multipliers or the VRF A-factor?