At-sea

Desalination

Water security, powered by the sea

At-sea

Desalination

a wave-enabled desalination system

Why At-sea Desalination Matters

  • Water Scarcity: Desalination provides a lifeline for arid and drought-prone regions with limited freshwater sources.

  • Food production: can be limited by scarcity of freshwater.

  • Energy-Intensive: On-shore desalination plants traditionally require a lot of energy, but renewable-powered desalination is growing.

  • Environmental Concerns: The discharge of brine (highly concentrated salty water) back into the ocean can harm marine ecosystems if not managed properly.

How it works

Our proven wave energy converter (WEC) can produce fresh water at sea (“at-sea desalination”) by integrating a commercial Reverse Osmosis (RO) unit into the WEC. 

The Azura wave device captures the kinetic energy from waves and converts it directly into electrical power to drive the desalination process. Depending on the application, the system may include energy storage and smart controls to optimize operation around sea conditions and water demand.

Fresh water is delivered to shore via:

  • Subsea pipelines for continuous pumped delivery to coastal communities, aquaculture sites, or agricultural operations.
  • Flexible hose systems for modular or temporary deployments.
  • Storage vessels transfer in remote or mobile configurations, where water is stored in onboard bladders and shipped to shore.

How it works

Our proven wave energy converter (WEC) can produce fresh water at sea (“at-sea desalination”) by integrating a commercial Reverse Osmosis (RO) unit into the WEC. 

The Azura wave device captures the kinetic energy from waves and converts it directly into electrical power to drive the desalination process. Depending on the application, the system may include energy storage and smart controls to optimize operation around sea conditions and water demand.

Fresh water is delivered to shore via:

  • Subsea pipelines for continuous pumped delivery to coastal communities, aquaculture sites, or agricultural operations.
  • Flexible hose systems for modular or temporary deployments.
  • Storage vessels transfer in remote or mobile configurations, where water is stored in onboard bladders and shipped to shore.

Technical Features

  • Reverse Osmosis (RO) unit powered by continuous wave energy (generates electricity for water production 24/7).
  • Water Production: one (1) WEC Produces 75,000 – 150,000 litres/day (production depends on wave resource). Water can be piped to shore – or stored in an offshore container.
  • Scalable and replicable system. Additional WEC’s can be added to meet customer water demand.
  • At-sea brine dispersion – avoids nearshore impacts.
  • Operates in both relatively calm and high-energy ocean waters.
  • Containerised for easy transport, fast deployment and reuse.

Customer Benefits from At-Sea Desalination

Low Cost

  • Wave energy is free and constant, providing more predictable long-term water costs, insulated from fuel and grid electricity price volatility.
  • No additional large-scale, land-based water infrastructure required.
  • Operates entirely at sea, independent of coastal power grids.
  • Reduces need for grid upgrades or transmission infrastructure.
  • Can provide water to underserved communities.
  • Brine is diluted and discharged offshore.
  • No thermal pollution.
  • Zero or near-zero carbon emissions.
  • Increases resilience during droughts and heatwaves.
  • Less vulnerable to fires and land-based disruptions.
  • Devices can be deployed incrementally as demand grows (phased CAPEX exposure).
  • Can be installed faster than traditional desalination plants.
  • Remote monitoring and autonomous operation possible.

Energy Independent

Environment

Climate Change

Maintenance & Mobility

Key Markets

Asset 6

Desalination operators & Coastal water municipalities

Asset 64

Remote or island communities

Asset 4

Coastal agriculture: food production, livestock

Asset 9

Aquaculture: offshore operations, processing

Asset 3

Defence: emergency deployment

Asset 3

Oil/gas offshore operations

Contact Us to explore the possibilities