Energy
SeaEly project tests direct seawater electrolysis
German researchers have demonstrated the initial feasibility of producing green hydrogen using untreated seawater without prior desalination.
Key points
- Fraunhofer IWES and IFAM coordinated the collaborative German research project.
- The initiative developed test benches and membranes for direct seawater electrolysis.
- The research aims to simplify water treatment requirements in coastal and offshore settings.
What happened
A collaborative German research initiative known as SeaEly has successfully demonstrated the initial feasibility of generating green hydrogen from untreated saline and brackish water, according to Hydrogen Fuel News. Coordinated by the Fraunhofer Institute for Wind Energy Systems IWES, alongside partner contributions from Fraunhofer IFAM, the project developed specialized test benches and membranes to assess direct electrolysis without full desalination.
Most commercial electrolyzers currently depend on ultrapure water, a requirement that necessitates energy-intensive purification and can complicate facility siting near coastal renewable energy installations. The SeaEly project sought to evaluate minimal water-treatment thresholds when introducing chloride and suspended particles directly into the electrolysis process, establishing new research infrastructure for ongoing long-term studies.
Why it matters
For policymakers and energy investors monitoring the green hydrogen sector, water sourcing remains a critical operational constraint. Streamlining or eliminating the desalination phase could reduce capital and operational expenditures for coastal and offshore hydrogen production facilities, potentially improving project economics in regions with abundant marine resources.
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