Fish-friendly Archimedean Screw Pump

Gallery Fish-friendly Archimedean Screw Pump 1
Gallery Fish-friendly Archimedean Screw Pump 1
April 2021
Headquarters 1671 NJ Medemblik, Netherlands

Fish-friendly Archimedean Screw Pump - 100% fish safe pump, with high efficiency, long lifespan, low maintenance and impervious to debris

FishFlow Innovations' fish-friendly Archimedes' screw pump is a very high-efficiency pump for lifting water. Compared to conventional pumps, not only does it save a lot of energy, but it also saves the lives of countless fish that migrate through the pump. Indeed, migrating fishes have the possibility to pass through the displaced water to find their way out of the polder, but approximately 15% of all fish that utilise this transport route suffer some kind of damage in conventional screw pump. The FishFlow Innovations' screw pump has a design that does not inflict any damage on passing fish. The blades do not stretch across the full width up to the tip of the screw, instead the width of the blades gradually decreases from the middle outwards during the last few windings. The second adaptation concerns the housing of the screw, which is enclosed in a pipe that is attached to the screw and thus rotates together with it which also ensures no water leakage. These adaptations transformed the screw pump into a fish-friendly facility for downstream migration.

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Key features

  • 0% water losses
  • 80 - 100% hydraulic efficiency
  • 80 years life time expectancy
  • 100% fish friendly
  • At least 30% energy savings, compared to conventional pumps
  • 95% Recyclable


  • 80% reduction on maintenance costs
  • Installed in 1 day
  • At least 30% energy savings, compared to conventional pumps

Maturity Stage

  • Medium and large scale commercialization
  • Small scale commercialization
  • Initial market commercialization
  • Prototype testing in the real world
  • Prototype testing 1:1 in the lab

Looking For

Activity Region

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New Zealand,

  • Headquarters
  • Activity

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances.