The development company is ultimately owned by Eneco Holdings N.V..  This is a Dutch company owned by 61 municipalities in the Netherlands, the largest of which are Rotterdam, The Hague and Dordrecht.  

These authorities have previously built a wind farm near the Dutch coast, called the "Prinses Amalia" farm.  But it is nearly twice the distance from the shore, with turbines that are only 60% of the height proposed for Navitus Bay.  

Eneco wants to build the Navitus Bay farm just over 8 miles from Purbeck and the Isle of Wight where it will have a much more serious impact than anything being planned in The Netherlands.

These button links take you to the Eneco websites.  Here you can get more background on the company and their plans.