Vertical Water Axis Turbine

Vertical Axis Water Turbines (VAWT) are turbines with a vertical shaft. Foils connected to the vertical shaft makes this typical water turbine. The standard version is called a Darrieus turbine. Pitch control is developed for maximum efficiency and a high fish friendliness. The pitch control enables energy extraction from water currents at lower speeds.

Cost effective
Since the foils have a standard and constant cross section, they can be fabricated very cost effective. Furthermore, the vertical axis gives the advantage to place vital components like the gearbox and generator above the water surface. This lowers the requirements and therefore the costs for these components. Since the gearbox and generator are easily accessible, maintenance will therefore be more cost effective.

Fish Friendly
In a team of international experts at the Protide project, the turbine of Water2Energy with pitch control is tested on fish friendliness. In the older Kaplan-turbines, fish mortality up to 20% is normal, but the turbine of Water2Energy showed a mortality lower than 1%.

Fish passing the turbine in fish friendliness tests

Test set up for the fish friendliness test

Scalable solution
Due to its geometry, the turbine is easily scalable. Therefore, the turbine can be adapted to a wide range of existing constructions. Turbines of 1 x 1 meter, 1 x 2 meter, 2 x 2 meter, and 2.1 x 4 meter are fabricated and tested.



Upcoming project Q4 2019

Port of Antwerp

The Port of Antwerp wants to make their energy use more sustainable. In an extensive selection procedure Water2Energy was selected in consortium with DeMeyer, a reputed construction company and service provider for mechnanical constructions in Belqium

End of November 2018, the turbine will be installed in one of the drainage channels bypassing the Kallo lock. The channel dimensions are 5 meter in height and 2,5 meters width. A 150kW turbine will be installed to test its performance and robustness. 

After successful tests 15-20 similar channels can be equipped with turbines, with a potential of electricity production of 7 GWh per year. puted



Microturbine – Cameroon

A company operating in Cameroon contacted Water2Energy to develop a microturbine for supplying energy to rural communities. A prototype is tested and will be finalized. After the final touch the prototype will be shipped to Cameroon to serve as a pilot installation.

Dragonfly II in the Scheldt

Dragonfly II was tested with PRO-TIDE and De Vlaamse Waterweg NV (the river and channel authority of Belgium) at the end of 2014. This turbine was equipped with the pitch control invented by Water2Energy. The addition of pitch control showed an increase of 30-50% of efficiency. 

Dragonfly I in the Lek

The first drawings originated from 2010. The baptising ceremony of the first Dversion prototype, called Dragonfly I, was in autumn 2012 at the Shipyard VSH in Heusden. The first tests were done in 2013 at the Lek with the standard Darrieus turbine. 


Feel free to contact us at:

E: info@water2energy.nl
Ph: (+31) 0620443093

Ambachtsweg 9h
4421 SK, Kapelle