Enersource, Horizon Utilities, PowerStream Officially Become Alectra Inc. January 31, 2017 Three leading Ontario electrical utilities have merged to become Alectra Inc. This milestone was reached today almost two years after Enersource, Horizon Utilities and PowerStream announced their intention to merge and acquire Hydro One Brampton. Alectra Inc. will complete the acquisition of Hydro One Brampton on February 28, 2017. The merger creates one of the largest municipally-owned electricity utilities in Canada, serving approximately one million homes and businesses in the growing Greater Golden Horseshoe Area.