The Dutch offshore contractor will use its Svanen heavy lifting vessel, which previously worked at the nearby 288MW Butendiek project. The vessel has arrived at the feeder port Cuxhaven for preparation works.
Ballast said work to install the 800 ton monopiles used to support 80 Siemens 3.6MW turbines, will begin by the middle of August.
E.on had originally commissioned jack-up vessel MPI Discovery to install the foundations and turbines. The German-based utility chartered this vessel on a long-term deal in January when work at Amrumbank West began. The MPI Discovery was working between the project and the 219MW Humber Gateway development, off the UK's northeast coast, also being developed by E.on.
When Ballast Nedam's Svanen vessel had finished installing the monopiles at Butendiek, developed by German firm WPD, a deal was agreed so work could continue at both of E.on's projects over the summer.
Ballast Nedam's offshore commercial manager Edwin van der Brug told Windpower Monthly, both parties in the contract are "rather flexible". The contract does not include a set number of monopiles to be installed by Ballast.
Svanen will install "as much as possible" depending on weather conditions and if MPI Discovery either completes its work at the Humber project early or is delayed.
There are many similarities between the Amrumbank and Butendiek projects, meaning Ballast's vessel can begin work quickly, van der Brug said.
The Amrumbank West offshore project is located 35 kilometres north of Helgoland off the German north coast. Its offshore transformer was installed in May and is due to be commissioned in the third quarter of 2015.