The project is being developed in Northeastern Maine, situated at Aroostook and Penobscot counties. Financial details of the acquisition have not been disclosed.
The wind farm will feature 174 turbines, which will be interlinked to the ISO New England at Emera Maine’s proposed 345 kV Hammond substation.
Commercial operations of the projec are expected to start in 2020.
Pattern Energy holds the right of first order with respect to any power project that Pattern Development decides to sell, including the King Pine wind farm.
Pattern Development President and CEO Mike Garland said: "We are excited about the opportunity to expand our previous activities in Maine by taking over development of the state’s largest wind power project.
"Maine is an extraordinary place and we have been working for years to find a great project that can be developed in a manner that is respectful of the local community and the environment.
"The King Pine project would establish a strong new source of revenue for the local community and the state, create new jobs and provide clean energy."
A bid has been submitted by SunEdison in New England’s 500MW request for proposals (RFP) in February for the King Pine project, which will use Vestas V136 3.45MW turbine will be used in the project.
Pattern paid an initial $13m for the project, with an additional $13.5m due if it is successful in the New England RFP.
SunEdison is planning to sell its assets after filing for bankruptcy in April this year.
Image: Pattern Development acquires development rights for 600MW King Pine Wind Project from SunEdison. Photo: Courtesy of dan/FreeDigitalPhotos.net.