ACER publishes today its Opinion on the draft gas and hydrogen ten-year network development plan (TYNDP) 2024 submitted by the European Network of Transmission System Operators for Gas (ENTSOG) on 20 October 2025.
ENTSOG’s draft 2024 TYNDP provides a pan-European view on hydrogen infrastructure needs up to 2040, an assessment of the natural gas curtailments under various stress cases and lists promoters’ planned projects.
ACER’s role is to assess the methodologies used in the TYNDP, its development process and outcomes as well as to provide suggestions for improvement.
What are ACER’s main findings on the 2024 draft TYNDP?
ACER acknowledges several improvements, but also notes shortcomings:
- Late delivery of the 2024 TYNDP (submitted to ACER in Q4 2025) which undermines the alignment with the selection of projects of common interest (PCIs) and projects of mutual interest (PMIs).
- Limited implementation scope: only one scenario of future possibilities was considered, and a cost-benefit analysis was conducted only for some projects.
- Insufficient data quality and transparency, including missing costs for many projects.
- Weak connection between Europe’s identified needs and the projects being proposed by project promoters.
What are ACER recommendations?
To finalise its 2024 TYNDP and prepare for future editions, ACER recommends ENTSOG to:
- Ensure a timely submission of the TYNDP by addressing the root causes of the recurring delays.
- Perform cost-benefit analyses for all scenarios and projects.
- Strengthen inputs, assumptions and cost data to ensure credible results.
- Improve transparency of project information and methodological choices.
- Make the plan needs-driven, with clearer justification for proposing the specific projects.
