SHERIDAN, WYOMING - April 09, 2026 - European hydrogen infrastructure is entering a new regulatory phase as GAZ-SYSTEM, Poland's gas transmission operator, becomes the first entity in the EU to seek and receive support for certification as a hydrogen transmission network operator - a requirement that all future hydrogen network operators across the bloc must satisfy before commencing operations.
Regulatory milestone for EU hydrogen infrastructure
Under EU rules governing hydrogen markets, transmission network operators must be certified by national regulatory authorities before they can operate. The Agency for the Cooperation of Energy Regulators (ACER) provided an opinion on the draft certification decision issued by Poland's national regulatory authority, URE (Urząd Regulacji Energetyki), covering GAZ-SYSTEM's application. This is the first instance of any hydrogen transmission network operator seeking certification under the applicable EU framework, marking a structural inflection point for how hydrogen networks will be governed across member states.
The European Commission, which assesses compliance with EU ownership unbundling rules as part of the certification process, requested ACER's opinion before issuing its own final assessment. That Commission opinion was due by April 09, 2026, with ACER's assessment forming a key input to the final determination. ACER concluded that GAZ-SYSTEM broadly meets the requirements for national certification, while attaching specific conditions that URE must enforce on an ongoing basis.
Ownership unbundling and independence requirements
EU ownership unbundling rules require hydrogen transmission operators to be structurally independent from energy producers and suppliers across sectors, including gas and electricity. This separation is designed to prevent vertically integrated energy companies from using control of network infrastructure to distort competition or disadvantage rivals. ACER's opinion affirms that GAZ-SYSTEM satisfies these requirements at the point of certification, but flags that continued monitoring will be necessary.
Specifically, ACER noted that URE must closely monitor GAZ-SYSTEM's independence from other energy market actors on an ongoing basis. ACER also stressed the need for financial account separation between gas and hydrogen network operations. Separated accounts create the regulatory transparency necessary for tariff accuracy - ensuring that the costs of operating gas and hydrogen networks are tracked independently and that pricing reflects actual network costs, not cross-subsidized figures that could distort competitive markets or create barriers for hydrogen producers and shippers.
Tariff integrity and economic oversight
The requirement for separated financial accounts carries direct economic implications for how tariffs are set. Where accounts are consolidated across gas and hydrogen operations, regulators face difficulty in verifying that tariffs charged to hydrogen network users reflect actual hydrogen infrastructure costs, rather than costs shared with or absorbed from conventional gas operations. ACER's opinion underlines that this separation is a prerequisite for sound regulatory economic oversight.
For hydrogen producers, offtakers, and industrial users connecting to GAZ-SYSTEM's emerging hydrogen network, tariff transparency directly affects investment calculations and long-term offtake contract structures. Cost uncertainty stemming from opaque tariff methodologies has historically slowed infrastructure-dependent energy transitions. The ACER-URE cooperation in this case - including ACER collecting URE's input before adopting its opinion - establishes a procedural template that other EU national regulators are likely to follow as additional hydrogen network operators seek certification in coming years.
Business impact
Energy procurement leads and hydrogen offtake contract managers at industrial facilities, ammonia producers, and steel manufacturers evaluating pipeline-delivered hydrogen in Central and Eastern Europe now have a clearer regulatory baseline. GAZ-SYSTEM's certification path confirms that EU hydrogen transmission will operate under unbundled, tariff-regulated conditions - not merchant or vertically integrated models - which anchors long-term price formation expectations and affects how supply agreements are structured.
Infrastructure investment officers and project finance teams assessing hydrogen backbone projects across the EU face a direct precedent: national certification is a mandatory pre-operational step, ACER opinion is embedded in the process, and the European Commission has final say on unbundling compliance. Teams building 2026-2030 investment roadmaps for hydrogen transport assets should incorporate regulatory lead times for certification into project timelines. Compliance officers at energy groups with hydrogen transmission ambitions in Poland and neighboring EU markets must ensure legal and financial account separation between gas and hydrogen entities is in place well before certification applications are filed, given ACER's explicit emphasis on this condition as a prerequisite for approval.