Mississippi Mills, which is a newly built 10MW facility, is situated in the west of Ottawa in Canada.
The company noted that the deal follows the previously announced purchase of Brockville 1, Brockville 2 and Burritts Rapids solar facilities, as part of an agreement to buy a total of nine solar from Canadian Solar in Ontario.
At a total cost of around $500m, the combined capacity of the nine solar facilities is 86MW, while all the projects will have 20-year power purchase agreements with the Ontario Power Authority.
TransCanada president and CEO Russ Girling said the company has acquired an additional solar facility in Ontario, as part of growing energy portfolio.
"The addition of these solar facilities to our asset base continues to allow us to complement our existing operations in Ontario where we have become the largest independent power producer in the province," Girling added.
