Trianel Wind Farm Borkum – municipal pioneering work on the high seas

Trianel Wind Farm Borkum

Municipal pioneering work on the high seas

We are one of the first offshore wind farms in the North Sea to be established predominantly by municipal utilities.

A pioneering project in municipal offshore wind energy

Trianel Wind Farm Borkum

As a joint project of Trianel and originally 33 municipal utilities and regional energy suppliers, at start of construction in 2011, Trianel Wind Farm Borkum has done pioneering work in the North Sea. With innovative technology, new turbine performance classes and challenging logistics, the Trianel consortium has broken new ground. The wind farm generates around 700 GWh on average per year – equivalent to the annual consumption of 200,000 households with a yearly electricity consumption of 3,500 kWh per household. The participating municipal utilities, investors and Trianel are thus jointly expanding renewable power generation in Germany.

More information about our company
Wind farm facts

Strong figures

* Electricity generated since 2015 × annual CO₂ emission factor of the German electricity mix (German Environment Agency, Climate Change 16/2026), on average around 437 g CO₂/kWh.

200 MW rotate in the North Sea

The Trianel Wind Farm Borkum started commercial operation in September 2015. 40 wind turbines, each with 5 MW, stand firmly on so-called tripods on the seabed. With the wind farm off Borkum, Trianel paved the way for the industrialisation of offshore technology, at that time still uncharted territory. The so-called large bubble curtain, for example, has set new standards in noise reduction.

Participating municipal utilities & shareholders

A strong community

Allgäuer Überlandwerk GmbH
Energie- und Wasserversorgung Bonn/ Rhein-Sieg GmbH
Energiehandel Lünen GmbH
GSW Gemeinschaftsstadtwerke GmbH Kamen, Bönen, Bergkamen
Hertener Energiehandelsgesellschaft mbH
nvb Nordhorner Versorgungsbetriebe GmbH
RhönEnergie Fulda GmbH
Salzburg AG
Stadtwerke Borken
Stadtwerke Dachau
Stadtwerke Fröndenberg
Stadtwerke Georgsmarienhütte GmbH
Stadtwerke Hamm GmbH
Stadtwerke Lengerich GmbH
Stadtwerke Soest GmbH
Stadtwerke Unna
Stadtwerke Verden GmbH
STAWAG Energie GmbH
SwissLife Asset Managers
Teutoburger Energie Netzwerk eG
Trianel GmbH

How the challenges on the high seas were mastered

History

In 2008, the shareholders decided: We dare to take the step out to sea! Construction in the North Sea began in September 2011, the 40 wind turbines themselves were erected in just under eleven months. This involved a steep learning curve, as it became clear that construction was much more demanding than expected. A logistical masterpiece was accomplished on the high seas.

More information about our history

The substation

The "socket" of the wind farm

The Trianel Wind Farm Borkum has its own substation, which is operated by Infrastruktur Windkraftwerk Borkum GmbH & Co. KG (IWB). That is where the wind power of the sister wind farms Trianel Wind Farm Borkum I and Trianel Wind Farm Borkum II flows together. Then the wind power is transformed and fed into the grid via a converter station of the transmission system operator TenneT. Via a 75 km long submarine cable, electricity reaches land.

More information about the substation

Environmental protection at sea

Flora and Fauna

Strict environmental requirements apply to the construction and operation of an offshore wind farm, such as noise limits for pile driving and multi-year monitoring. During the construction of our wind farm, a large bubble curtain suitable for series use was tested for the first time under real construction conditions, providing the first evidence that noise mitigation measurably benefits harbour porpoises. New communities of life form on the foundations (Thünen Institute), while some species, such as loons, avoid wind farms.

More information about environmental protection

Wind power from the North Sea for long-term planning security

Power Purchase Agreement (PPA)

Opt for electricity from offshore wind. As an electricity buyer, your company benefits from a long-term partnership with us as your energy producer. We supply electricity from Trianel Wind Farm Borkum including guarantees of origin, at stable prices. Take advantage of our Power Purchase Agreement (PPA) offer.

 

More information about PPA (German)

Working together toward our goal

About us

Together with originally 33 municipal utilities and regional energy suppliers, Trianel completed the first phase of the Borkum Wind Farm, consisting of 40 turbines with a total capacity of 200 MW. An additional 202.56 MW followed in Phase II. The total investment for the two phases of the Trianel Borkum Wind Farm amounts to approximately 1.8 billion euros.

More information about our company