In cooperation with the DEWI (German Wind Energy Institute), Projekt GmbH is monitoring several prototypes on the DEWI test field in Wilhelmshaven, independently of manufacturers.
Prototypes:
- Vestas V47 - erected December 1997
- Vestas V66 - erected December 1997
- AN BONUS 2MW - erected December 1998
- NORDEX N-80 2.5 MW - erected December 2000
- Vestas V90 - erected April 2005
- GE 2.5 - erected in 2007
DEWI measures the wind energy turbine performance curves, noise level, grid compatibility. The operating behaviour of the turbines is optimised in close cooperation with the manufacturers' development departments.