"Installation was a challenge," admits the company, a subsidiary of Borsig Energy. The N80 weighs a total 330 tonnes and the nacelle and hub alone 110 tonnes. A prototype N80 has been tested for a year at the Grevenbroich wind test field in North Rhine Westphalia.
A sharp incline to the 500 metre-high site in the Black Forest meant that machine house components had to be transported individually and assembled on site. The blades were comparatively light at 8.6 tonnes each, but their 40 metre length required dexterity from the crane operator to get them lifted from the road and swung vertically onto the forest track.