Ocean motion electricity
SwellGen’s electricity module acts as an inshore swell conduit, taking the natural energy of the ocean and repurposing it for constant onshore power.
What is SwellGen
SwellGen is a world first ocean technology that allows coastal communities to generate energy from the natural motion of the sea
Desalinated fresh water
SwellGen’s desalination module acts as a bottler of this natural energy from the ocean, providing a consistent supply of fresh water.
Coastal community minded
We harness the energy from the moving, changing, swelling ocean. We believe this energy needs to be first and foremost accessible to coastal communities.
Solar isn’t enough
Coastal communities struggle to stay connected.
Fragile grid connectivity forces a heavy reliance on diesel
generators that are vulnerable to supply disruptions.
Solar alternatives require complex installations,
and solar plus batteries aren’t always good enough.
How the power module works
Ocean motion
Electricity
SwellGen electricity module
1m³
The size of a single module
Swell moves it
A capsule travels along a fixed railing system,
driven by the rise and fall of inshore swell.
It only needs around half a metre of vertical movement.
Ocean powers it
That journey is converted into rotational power.
The ocean movement generates reliable constant electricity.
Modular, scalable, moveable
Coastal communities need emissions-free electricity solutions that deliver 24/7 operations, are simple to install in remote areas and supply constant connectivity.
SwellGen electricity module supplies
48 kWh POWER
PER DAY
PER DAY
Modelled output per module*
2 HOMES
PER DAY
PER DAY
Based on average household electricity use*
*Modelled estimates, subject to field validation. Actual output varies with site and sea conditions. Home equivalent is indicative only.
Clean water isn’t guaranteed
Existing pressures on coastal communities are compounding.
Water contamination, droughts and water shortages disproportionately impact remote coasts and islands.
They deserve fresh water.
How the water module works
Ocean motion
Desalination
SwellGen desalination module
1m³
The size of a single module
Motion bottles it
A separate water module drives desalination
by powering a pump that pushes seawater
through filters to produce fresh water.
Coastal communities need fresh water
Remote communities need sustainable fresh water solutions that deliver 24/7 operations, simple installations and a consistent supply.
SwellGen desalination module supplies
18,000 LITRES
PER DAY
PER DAY
Modelled output per module*
50 PEOPLE
Based on average daily domestic water use*
*Modelled estimates, subject to field validation. Actual output varies with site and sea conditions. Per-person equivalent is indicative only.
Built for the
game-changers
Investors and funders
Request brief
Coastal and island communities
Explore a pilot
Commercial partners and Government
Talk to usSupporting
coastal communities
- 2022–23
Early prototypes, the first built partly from Lego in a bath, the second in the sea. Independent engineering review completed and the PCT patent application filed.
- 2024–25
National and regional phase entry for the Patent Cooperation Treaty (PCT) patent. Ārohia Seed Grant from Callaghan Innovation.
- 2026
Aurora Climate Lab cohort. On the road at the Energy Tech Summit in Bilbao, New York Climate Week and Ocean Energy Europe in The Hague.
- 2027
First pilot units in the water with New Zealand coastal communities. Trial talks under way with East Coast sites and Plimmerton.
- 2028
Service model proven with first paying customers, supplying electricity and fresh water to coastal communities.
Recognition and media coverage
Offshore
Energy Onshore
Game-changer
We are raising to fund the pilots.
Further detail sits in the investor brief.