Vattenfall is seeking suppliers and installers for array cabling at the 600MW Kriegers Flak and 350MW Vesterhav North and South offshore wind farms off the coast of Denmark.
A tender has been issued for companies to take responsibility for all supply work related to manufacturing.
A second tender covers all the installation work at the wind farms.
The contracts will run from 1 January 2019 to 31 December 2021.
Interested parties have until 9am CET on 23 October to submit.