Navitus Bay is developed by Navitus Bay Development Limited, a 50-50 joint venture between Eneco and EDF Energy.
The project dimensions were scaled back in December 2012 and again in February 2014. A 630MW "Plan B" is also under consideration.
In a statement about the deal, MV CEO Jens Tommerup said: "If the project translates into a firm and unconditional order, the 80-metre blades are planned to be produced locally at our manufacturing facility on the Isle of Wight, providing jobs in the region close to the project."
Navitus Bay is one of the more controversial offshore projects in the UK. It has attracted widespread criticism from local politicians and claims that it could affect the Unesco status of Dorset's Jurassic coast. Unesco has denied this is the case.
Several district councils have objected, arguing the development would adversely affect tourism to the area. A record 2,680 "representations" have been received by the Planning Inspectorate from interested parties about the development — more than any other offshore wind development handled by the authority.
Even prime minister David Cameron was pulled into the issue by Dorset's regional press while campaigning in the recent UK election.
As the Conservative's generally support offshore wind, Cameron unsurprisingly remained on the fence as he was speaking in a marginal constituency.
He told the Bournemouth Echo: "This matter is before the Planning Inspectorate so I have to be careful what I say, but I know all the local MPs and councils have made their feelings known about it.
"I understand why they feel so strongly. This is a particularly beautiful part of the country. It is special and it is part of our heritage."
Navitus Bay is the second project MV has won this week. On Monday it secured the deal for E.on's 400MW Rampion project.