Gallery: Borkum Riffgrund 1 installation

GERMANY: Dong Energy has released pictures of its Borkum Riffgrund 1 wind farm being installed after the 312MW project produced its first power earlier this week.

by David Weston 20 February 2015

  • Dong Energy installed the projects substation in August

    Dong Energy installed the projects substation in August

  • The substation was shipped from the Aalborg in Denmark

    The substation was shipped from the Aalborg in Denmark

  • CT Offshore installed all of the inter-array cables, completing the work in December

    CT Offshore installed all of the inter-array cables, completing the work in December

  • The first Siemens 3.2MW turbine was installed in October following a brief delay

    The first Siemens 3.2MW turbine was installed in October following a brief delay

  • Power was first transmitted from the project in mid-February

    Power was first transmitted from the project in mid-February

  • Monopile foundations at Borkum Riffgrund 1 were installed in July

    Monopile foundations at Borkum Riffgrund 1 were installed in July

  • Full commissioning is expected to take place this year.

    Full commissioning is expected to take place this year.

  • The SWT-3.2-120 turbines have been optimised by Siemens to increase the output up to 4MW

    The SWT-3.2-120 turbines have been optimised by Siemens to increase the output up to 4MW

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This is Dong's first German offshore project to be connected, four months after the first Siemens 3.6MW turbine was installed.

The project uses 78 Siemens 3.2MW turbines, optimised by the manufacturer to increase output to 4MW. Turbine installation at Borkum Riffgrund 1 began in October but was  due to manufacturing problems at Siemens.

Cabling was completed by CT Offshore in December at the site located 44 kilometres off the coast in the German North Sea. 

Monopile foundations at Borkum Riffgrund were . One of the foundations is a full-scale prototype of a suction-bucket jacket foundation, which was installed in August.