Developer KNK Wind cited the company's Haliade 150 6MW turbine in its application for a building permit submitted last autumn, Alstom said.
If the order is confirmed, the turbines will be built at Alstom's new factory in St-Nazaire, which is due to start production by the end of this year.
Arcadis Ost 1 was granted preliminary approval by regulators in early 2013 for 58 turbines, an offshore substation and .
If all goes to plan the project, which lies 19km off Rügen Island in 41-46-metre-deep waters, could be completed by the end of 2018.
Project partners include WV Energie, Nordex, IKB and SWBV.