The FISH-WEC project is advancing a novel wave-powered desalination system designed to support sustainable aquaculture and remote communities. Led by Queen’s University Belfast in collaboration with Pure Marine Gen, Colloide Engineering Systems, and Cunningham Covers, the project builds on earlier prototypes and the learnings of the CASE DUO-DS to develop a full-scale device capable of producing freshwater directly from wave energy.
The FISH-WEC system uses a two-body wave energy converter to force seawater through reverse osmosis membranes, eliminating the need for diesel-powered systems. The system produces clean, potable water; whilst leaving the salt and other impurties behind. This technology is particularly suited for salmon farms, where freshwater is needed for parasite control, and for coastal communities facing water scarcity.
Recent progress includes successful deployment planning, refinement of the device’s design for longer-term operation, and development of a performance assessment methodology aligned with international IEC standards. Although the first field test faced challenges due to equipment damage and severe weather, lessons learned have informed upgrades for a second deployment scheduled for July 2025.
The project has demonstrated the system’s reliability in real sea conditions, validated its freshwater output (targeting over 500 litres/day), and has supported moves to commercialisation by moving the technology from TRL6 to TRL7. It has also contributed to global standards for wave-powered desalination and aligns with Northern Ireland’s net-zero and economic development goals.
FISH-WEC showcases how marine energy can power practical solutions for the blue economy, offering a clean, scalable alternative to fossil-fuelled water production.