Denmark-based Wavepiston Raises €900K To Advance Wave Energy And Water Solutions
Mar 13, 2025 | By Startup Rise

Danish wave energy company Wavepiston, based in Helsingør, has raised €900K from two investors through its Dutch joint venture, The Blue Line BV.
The Blue Line is supported by Connect the Drops, a Dutch investment fund focused on water, and Unknown Group, a VC firm investing in energy transition.
Funding utilisation
Wavepiston will use the funds to improve its technology, test it in real-world conditions, and build partnerships for market entry. The company aims to grow the renewable energy sector by developing wave energy solutions.
Jan Otto Ooms, founder of Connect the Drops, says, “Innovation and sustainability go hand in hand. By harnessing wave energy to produce clean drinking water, we take a significant step toward a future where renewable energy and water security come together.”
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About Wavepiston
Wavepiston is working to make wave energy a reliable part of the renewable energy sector, focusing on power generation and desalination.
By developing its technology, the company aims to improve energy access, provide clean water, and reduce reliance on fossil fuels, helping wave energy play a bigger role in global energy needs.
Wavepiston has created a wave energy system that produces electricity and desalinated water. It uses multiple collectors, each connected to a string, with sails that move with the waves.
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These movements power hydraulic pumps, which pressurize seawater and send it to a conversion station. There, the pressurized water either drives a turbine to generate electricity or undergoes desalination using reverse osmosis.
The system is scalable, meaning multiple strings can be added based on location and energy demand. It provides a renewable energy source, creates jobs, and boosts local economies.