Engineering work at the site off Norfolk’s north-east coast will start in January and the first turbines will be ready for installation in 2017.
The German turbine manufacturer will also administer two years operation and maintenance work followed by three years of technical assistance, and other agreed services, to the wind farm.
Statoil renewable energy senior vice president, Siri Kindem, said: "Technology development is fundamental to optimising offshore wind industry costs and solutions and the use of new large turbines such as these is a main contributor to reducing offshore wind costs."
In July, the UK Crown Estate announced the number of turbines at Dudgeon would be cut from 178 to a maximum of 78.
Norwegian companies Statoil and Statkraft acquired Dudgeon from Warwick Energy in October 2012, owning 70% and 30% respectively. Both companies also developed the 317MW Sheringham Shoal Offshore Wind Farm off the north Norfolk coast.
Dudgeon made it through the next stage off the Department of Energy and Climate Change’s 'final investment decision enabling for renewables' (Fider) process. This is designed to enable developers to take final investment decisions ahead of the Contract for Difference (CfD) regime as part of Electricity Market Reform.