Hydrogen Purity Standard Agreed: 98% Benchmark Across the EU

In June 2025, Gas Infrastructure Europe (GIE) and the Hydrogen Purity Task Force brought together operators from across the EU to agree on a key piece of the hydrogen puzzle: purity. After months of consultation, members landed on a minimum hydrogen purity standard of 98%.

This figure strikes the right balance—technically reliable, legally sound, and economically viable—paving the way for hydrogen to blend seamlessly into Europe’s existing gas infrastructure.

Supporting Europe’s Energy Transition

Hydrogen sits at the heart of Europe’s clean energy roadmap. With plans for over 50,000 km of dedicated hydrogen pipelines by 2030, having a clear rulebook on purity is essential. The 98% standard helps align national operators, regulators, and investors as the EU scales up hydrogen infrastructure.

Practical, Not Theoretical

Achieving 98% purity doesn’t mean starting from scratch. It’s about smart upgrades:

• Monitoring with tools like gas chromatography and inline sensors.

• Hardware adjustments—from seals to compressors—to handle hydrogen’s smaller molecules.

• Step-by-step blending trials, gradually raising hydrogen volumes and resolving technical issues along the way.

By reusing existing gas networks, operators can cut costs by up to 30% compared to new builds, keeping the transition affordable and low-risk.

Why 98%?

• Higher thresholds (e.g. 99.5%) demand costly purification and membranes, pushing CAPEX up by 20–30%.

• Lower thresholds risk downtime, faster equipment wear, and regulatory complications.

At 98%, the standard hits a sweet spot—protecting assets, keeping costs under control, and aligning with EU gas directives.

Made in Europe

This initiative draws on decades of European pipeline expertise. Local suppliers—from Belgian network operators to German materials labs—are leading the way in producing the seals, sensors, and compressor parts needed. That means new jobs across R&D, manufacturing, and on-site operations, boosting Europe’s industrial base.

Benefits Beyond Purity

• Environmental impact: If hydrogen replaces just 20% of natural gas in pipelines, lifecycle CO₂ emissions could fall by up to 60%.

• Economic impact: Tens of thousands of jobs in construction, certification, and manufacturing.

• Market impact: Harmonized standards across borders make hydrogen trade simpler and safer, building investor confidence.

Learning from the Past

The EU has faced similar challenges before. Aligning natural gas specifications decades ago was tough, but once harmonized, it unlocked stability and trade. The hydrogen purity consensus follows that same playbook—collaboration as the foundation of growth.

Looking Ahead

With the 98% purity threshold agreed, the next steps include:

• Publishing detailed technical guidance.

• Running cross-border blending trials.

• Refining safety and certification protocols.

Regulators, operators, and policymakers will continue working together to ensure that Europe’s hydrogen rollout is safe, efficient, and scalable.

The Bottom Line

This 98% benchmark is more than a technical detail—it’s a cornerstone for Europe’s hydrogen economy. By balancing cost, safety, and practicality, the EU has taken a major step toward a cleaner, more resilient energy future.