The decision was unveiled by business secretary John Hutton, during a visit to the company's headquarters in California this week. He said it was further evidence that "the UK is fast becoming a magnet for renewable energy investment".
The Britannia project envisages the development of a 7.5MW wind turbine building on Clipper's existing Liberty 2.5MW turbine.
ONE NorthEast's support package includes finance, access to offices, development, testing and assembly facilities over a two-year period at the NaREC engineering and test laboratory.
The initial project is likely to create 25 highly specialised engineering jobs and further bolster the north east region's reputation in the offshore sector.
Clipper will assemble a top team of industry professionals from across Europe to design and manufacture the prototype.