Two years ago the companies agreed a $900m deal that would have seen Algonquin buying four US wind farms totalling 480MW from Gamesa.

However, Algonquin ultimately declined to buy one of the wind farms, the 80MW Pocahontas Prairie in Iowa, reportedly due to grid-congestion issues in the area.

Instead, Algonquin agreed to raise its stakes in the other three projects - the 200MW Minonk in Illinois, the 150MW Senate in Texas, and the 50MW Sandy Ridge in Pennsylvania - from 51% to 60%.