ACER has been tasked with carrying out a periodic cost comparison assessing the efficiency of gas transmission system operators (TSOs) across the EU. The results should be taken into account by national regulatory authorities when setting the allowed or target revenues of the TSOs.
ACER will hold a webinar to present the methodology (to be published on the same day) for its efficiency comparison, as well as the next procedural steps.
When & where?
Wednesday 15 October 2025, 10:00 – 11:00 CEST, online
What is the event about?
This webinar will present the:
- Summary of the input received during the public consultation and stakeholder workshop.
- Expert review conducted to assess the proposed methodology.
- Final methodology.
- Process going forward.
This webinar also concludes the first phase of the ACER efficiency comparison, during which ACER gathered feedback on its proposed methodology.
What are the next steps?
Next phase (end 2025-2026) will involve data collection from gas TSOs and data validation.
