Why permitting is now the critical path on European hydrogen projects

Two years ago, the bottleneck on most European hydrogen projects was electrolyser delivery. Factory slots were oversubscribed, lead times had stretched to 18 months, and developers were restructuring schedules around equipment availability.

That constraint has eased. Electrolyser manufacturing capacity has grown, lead times have normalised, and in some markets there is now more capacity available than contracted demand. The critical path has shifted - and for many projects currently in development, it now runs through planning consent and regulatory approval, not equipment procurement.

The consenting timeline reality

Developers who entered feasibility in 2023 expecting 12-month planning timelines are now sitting at 24 months and counting. For projects above 50 MW, environmental impact assessment requirements, grid connection consenting, and water abstraction licensing can each run in parallel but each carries its own decision clock and stakeholder engagement obligation.

In practice, projects above 10 MW in most EU member states are reporting 18–36 months from formal application to planning consent. Projects that trigger EIA - which includes most electrolytic hydrogen facilities at meaningful scale - are at the upper end of that range where the competent authority has limited prior experience with hydrogen infrastructure.

What the Net-Zero Industry Act actually delivers

The EU Net-Zero Industry Act establishes 18-month permitting targets for strategic projects and 12 months for smaller developments. These targets are real commitments on paper. In practice, implementation is delegated to member states, and the enforcement mechanism is soft. The NZIA creates political pressure and, in some jurisdictions, dedicated permitting desks for green hydrogen projects. It does not yet deliver consistent acceleration across the EU.

The most concrete benefit of the NZIA for developers is the “strategic project” designation pathway, which prioritises consent timelines and can unlock pre-application engagement with competent authorities. This is worth pursuing early for large-scale projects, but the application process itself takes time and is not guaranteed.

Where delays are actually occurring

Based on projects currently in consenting, the most common delay points are:

• EIA scope creep: Competent authorities with limited hydrogen experience often request extended assessment of cumulative effects, noise, visual impact, and water interactions. Each additional assessment topic adds consultation rounds and decision time.
• Grid connection consent: Network connection agreements are running 12–24 months in several markets, independently of the planning consent. Developers who treat this as a sequential process rather than a parallel workstream are finding it adds 12 months to their critical path.
• Water abstraction licensing: Electrolysis at scale requires significant purified water throughput. Water abstraction licences, particularly in water-stressed catchments or where the raw source involves surface water, are subject to their own regulatory process and can be contentious with local stakeholders.
• Hydrogen storage consenting: Above-ground pressure storage and any underground storage element introduces COMAH thresholds and separate safety case requirements in most jurisdictions. The interaction between planning consent and COMAH determination is not always well-coordinated.

What to do differently from the start

The developers who are moving fastest through consenting are those who treated permitting as a parallel workstream from the earliest feasibility stage, not a sequential step after FEED. Specific practices that are making a difference:

• Pre-application meetings: Request early engagement with the planning authority before formal submission. In most jurisdictions this is available and free. The conversation shapes the EIA scope and avoids surprises.
• EIA scoping first: A formal scoping opinion from the competent authority is not always mandatory, but it locks in the agreed assessment topics and makes it much harder for objectors to demand additional assessments mid-process.
• Grid connection in week one: The grid connection application should be submitted at the same time as the planning pre-application conversation starts, not after planning consent is secured.
• Community engagement early: Hydrogen is still poorly understood by the public in most markets. Early community engagement - before objections are filed - materially reduces the risk of a contested public inquiry.

The LCOH implication

A 12-month delay to commissioning adds extended owner’s costs, shifts revenue start dates, and increases working capital requirements. For a 50 MW project, a one-year delay to first hydrogen production typically adds €3–6/kg to the breakeven LCOH over a 20-year project life, depending on financing structure. This needs to be in your base case, not a risk register footnote.

Key takeaways

• Planning consent, not equipment supply, is now the critical path on most European hydrogen projects above 10 MW.
• EIA scope, grid connection consent, and water licensing each carry independent timelines and need parallel workstreams.
• The NZIA creates framework commitments but has not yet delivered consistent acceleration across member states.
• Pre-application engagement and early community consultation are the highest-leverage early interventions available to developers.
• Permitting delay scenarios must be explicitly included in LCOH and cash flow models.