The 312MW Borkum Riffgrund 1 offshore wind farm in the German North Sea has started flowing electricity on to the national grid.

Offshore wind

The wind farm is located 54km off the German coast and 37km north of the island of Borkum. It features 78 Siemens SWT-4.0-130 turbines

Upon completion, the wind farm will generate enough energy for about 320,000 homes per year.

Dong Energy operates and owns a 50% stake in the wind farm. Kirkbi and William Demant own 32% and 18% interests respectively.

The offshore construction works began in August 2013 and the wind farm is expected to be commissioned in the first half of 2015.

Borkum Riffgrund 1 program director John Hill said: "The construction and good progress up to first power has been achieved thanks to a huge effort from the entire team and our contractors. Over the next months we will finalise the installation of all 78 turbines."

Dong Energy managing director in Germany Trine Borum Bojsen said: "Borkum Riffgrund 1 is our first German wind farm and we’re more than happy, that we’ve started to deliver CO2-free power to the German grid."

Germany is planning to install 15GW of offshore wind by 2030 as part of its transition to a renewable electricity supply.

Dong Energy has to date built 2.5GW of offshore wind with plans for 6.5GW more by 2020.

Image: The Borkum Riffgrund 1 offshore wind farm is located 54km off the German coast. Photo: Courtesy of DONG Energy A/S.