Northland will now hold a 60% stake in the project in the Dutch North Sea after striking a deal to by Typhoon Offshore's 5% holding.
The company said is has taken a lead role in completing the remaining outstanding development activities and intends to continue its "active leadership role during construction and into operations".
Financial terms of the deal were not revealed.
In August last year, Northland bought a majority stake in the project from Typhoon Offshore, again for an undisclosed sum.
Permitting for the development was completed following the withdrawal of objections from the country's fishing associations in December.
The project is expected to cost EUR 2.8 billion and offshore construction is due to start in July 2014, with the aim of bringing the project online by the end of 2016.