Nysted passes 10-year milestone

Denmark's Nysted offshore wind farm has marked a decade in operation.

The 72-turbine Dong Energy development, located south of Lolland in the Baltic Sea, has recorded a 98% uptime during its 10 years of operation.

"Nysted formed the basis for the development of offshore wind turbines in a number of areas from EIA [environmental impact assessment] investigation, preparation of preliminary surveys within geosciences, wind, waves, etc," says head of engineering Tove Feld. 

"It has also provided important knowledge in terms of design, wind farm layout, fabrication, testing, installation, substation concept, and grid connection."

Nysted, which is powered by 2.3MW "Danish design" Siemens turbines arrayed in an eight-row parallelogram, has flowed on average 595GWh a year since switch-on, supplying electricity to some 145,000 households.

"The knowledge gained from Nysted is very valuable even today and it is still driving the development of offshore wind power, especially within operations and maintenance of offshore wind turbines," adds Feld.

The earlier sale of stakes in the wind farm by Dong to Stadtwerke Lübeck and PensionDanmark, which now own 7.25% and 50%, respectively, pioneered the Danish utility's "partnership model". The shareholder set-up has since been used on developments including Borkum Riffgrund 1 off Germany, where Lego parent Kirkbi owns a 50% stake.