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Trianel Borkum II behind schedule

4C Offshore | Tom Russell
By: Tom Russell 05/12/2019 Trianel
German energy company Trianel has revealed that 16 of the 32 wind turbines at the Trianel Windpark Borkum II offshore wind farm have been installed. Originally expected to be completed by the end of 2019, Trianel stated that the project is now not expected to be completed until the first half of 2020.

According to Trianel the insolvency of Senvion, who was responsible for the delivery, installation, and commissioning of wind turbines, had a massive delay on the construction schedule. Installation work commenced in late summer 2019, behind schedule, with negative consequences for the further construction process.

"Due to the increasing bad weather during the autumn and winter months, we have not been able to make up for the massive shifts in the construction schedule,"
explains Irina Lucke, Technical Manager of Trianel Windkraftwerk Borkum II GmbH & Co. KG.

According to the Renewable Energy Sources Act (EEG), the feed-in tariff for offshore installations which go into operation after 1.1.2020, will be reduced by 1 ct / kWh. Klaus Horstick, Commercial Director of Trianel Windkraftwerk Borkum II GmbH & Co. KG stated: "All in all, this means possible damage for us and the participating municipal companies in the mid double-digit millions."

Installation of the 32 offshore wind turbines is being completed 45 kilometres north of Borkum in the North Sea, using Jan De Nul's jack-up installation vessel
Taillevent. Each turbine will stand roughly 105 metres tall, with a rated power of 6.15 MW.

Since the beginning of August,
Tailleventof the Jan de Nul Group has been commuting between the base port of Eemshaven and the construction site, which is about six hours away. On each trip, the installer ship picks up the components for three wind turbines - nacelles with a pre-assembled hub, pre-assembled towers and nine rotor blades. In ideal weather conditions, offshore workers on board require around two to three days to install a turbine- from erecting the tower to installing the nacelle to bolting the rotor blades.

The 203 MW project covers an area of 33km2 and is valued in the region of EUR 800 million. The project is backed by EWE AG with a share of 37.5% and a joint venture of the power utility of the city of Zurich with 24.51%. The Public utilities cooperation, Trianel, together with 17 municipal utilities from Germany hold a share of 37.99%.


It is located in the direct vicinity of the 200 MW
Trianel Windpark Borkum I project, which consists of 40 turbines and has been in operation since summer 2015.

For more information on construction and logistic activities in offshore wind,
click here. You can also view projects worldwide using 4C Offshore's interactive map.

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