German wind turbine manufacturer Nordex has installed the first two of its N149/4.0-4.5 turbines with a nominal output of 4.5MW at the Wennerstorf II wind farm located about 30km south of Hamburg.


Image: Nordex installing its N149/4.0-4.5 turbine at Wennerstorf II wind farm. Photo: Courtesy of Nordex SE.

Originally, the Wennerstorf II wind farm had four turbines, each with an output of 1.3MW and had been electricity generation since 2003. In 2015, ABO Wind, the developer of the wind farm decided to repower the site with latest technology by replacing the old turbines with new ones.

Nordex Group global sales head Karsten Brüggemann said: “We have received very favourable feedback from our customers. Many customers in Europe and other parts of the world have already included the turbines in the necessary approval procedures.”

For the replacement, ABO Wind has chosen the Delta4000 product series, the N149/4.0-4.5.  With an output of 9MW, the wind farm’s capacity is expected to increase by 73%.

The two new turbines must undergo extensive independent testing before all the relevant certificates are obtained, the company said.

Nordex claims that the site meets the requirements of IEC 61400 and offers wind conditions of about 6.5 meters per second on average.

The turbines will be fitted with radar-controlled aviation obstruction lighting, as the total construction height reaches 200 meters. The obstruction lights are activated when an aircraft flies at an altitude of below 600 meters approaching the turbines within a radius of 4km.

Nordex Group German business in charge Jörg Hempel said: “We are pleased to have completed this beacon project in time for the commencement of WindEnergy Hamburg 2018.

“In addition to our turbines at the port of Hamburg, the N149/4.0-4.5 in the vicinity of the Nordex main office in Hamburg is another impressive project with which we can demonstrate the Nordex Group’s state-of-the-art technology to our customers.”