Great River Hydro, an affiliate of ArcLight Capital Partners, has announced it has closed its acquisition of TransCanada‘s New England hydroelectric power portfolio.

With 13 facilities on the Connecticut and Deerfield rivers in Vermont, New Hampshire and Massachusetts, Great River Hydro’s 584 MW renewable power portfolio is the largest conventional hydro system in New England, the company said in a statement.

The portfolio includes the 192MW Moore facility, the largest conventional hydro station in New England, and 12 other facilities totaling 392MW.