Vattenfall has extended the duration of its cooperation agreement with Deutsche Windtechnik in the area of maintenance for all steel structures at the offshore wind farm (OWF) DanTysk. The service provider is now also responsible for these maintenance tasks at Vattenfall's Sandbank offshore wind farm, which went into operation in July 2017.

The new contract includes inspection, maintenance and repair of all foundation structures (monopiles for the wind turbines and jacket structures for the offshore substations), the transition pieces, and the internal cabling for the wind farm, above as well as under water. There will be further collaboration during construction and production monitoring as well as in the areas of fault elimination work and switching operations.