The world’s best rotors!
Higher efficiency!
Productivity!
WepfAir AG
Our team develops and manufactures highly powerful wind turbines.
We have been working in mechanics for over 20 years and have developed a new generation of wind turbines in recent years, which we would like to introduce to you here.
World record! After a series of measurements in the Large Emmen Wind Tunnel with the ZHAW, it is clear that WepfAir is currently building the world’s best rotors.
“6-blade wind turbines are 70% more efficient than 3-bladed turbines!”
— WepfAir AG
Technical Details
Our wind turbines can be implemented on different scales. Starting turning at 0.8 m/s they produce power already at 2 m/s. Turbines equipped with 6 rotor blades are more efficient at 70% than the classical 3-bladed ones.
On a small scale, e.g. on a rooftop of residential buildings (⌀ 1,2-3,6 m; Ppeak = 0,5-5 kW), they can be installed on a fence or vertical installation to eat wind power for higher productivity. On a bigger scale of max high 26 m (⌀ 14 m; Ppeak = 80-240 kW), e.g. for commercial/business purposes.
WepfAir’s Main Properties
- Mechanical and aerodynamical high efficiency;
- Slow-moving and very quiet;
- Bird- and bat-friendly;
- Modular design;
- Aesthetics.
See the flyer of small and big solutions of WepfAir – Swift and Falcon 80 single/triple wind turbines.
The Innovative 6-bladers vs 3-bladers
The owner of WepfAir AG, Hans Wepfer, explains the difference from the innovative WepfAir’s 6-bladers to the traditional 3-bladers. At the edge of 3-bladers the wind speed can go over 300 km/h, but at the edge of WepfAir’s 6-bladers it reaches less than a half (< 150 km/h on the edge).
Gamplüt Project
On a larger scale, a 6-bladed turbine has been successfully installed high in the Swiss Alps at an elevation of 1300 m. The Gamplüt turbine, which has a rated power of 80 kW, was assembled in 2016. This innovative turbine, standing at a height of 15.8 m, was designed to rotate 360 degrees to capture every gust of wind. The energy generated is utilized for the gondola lift and the mountain restaurant.
Our Breakthrough Technology
By the slow windspeed of less than 2 m/s our turbine in Gamplüt (⌀ 14 m) is turning properly, around 97% of the day and is producing and ready for each little wind gust to produce surprisingly much energy. According to Prof. Bernoulli, it is not possible to produce electricity starting from 2 m/s but with our technology, we show this is possible.
WepfAir Hans
In Beringen, Switzerland, the first major project involving a 6-blade wind turbine was successfully completed. The turbine, known as the ‘WepfAir Hans’, stands tall at a height of 15.6 meters. The WepfAir Hans boasts a rated power of 250 kW and is uniquely equipped with 18 rotor blades. This significant milestone in renewable energy was achieved in the year 2014.