PowerStream Holdings Incorporated was an electric utility servicing communities north of Toronto and in Central Ontario.
[1] Its service areas included Aurora, Alliston, Barrie, Beeton, Bradford West Gwillimbury, Penetanguishene, Markham, Richmond Hill, Thornton, Tottenham and Vaughan.
On November 1, 2013, a new affiliate, PowerStream Energy Services Inc., was created to facilitate the pursuit of non-regulated business opportunities.
It resulted in a corporate governance restructuring and the establishment of PowerStream Holdings Inc. as the parent company to both entities.
On March 24, 2016, the shareholders of PowerStream Holding's Inc. signed agreements to merge the utility with Enersource (owned by the City of Mississauga and Borealis) Horizon Utilities (owned by the Cities of Hamilton and St. Catharines) and then to purchase the assets of Hydro One Brampton from the Province of Ontario.