Northeast Ontario Bulk Planning Initiatives

A bulk system plan is being developed to address emerging electricity needs in Northeast Ontario being driven by increasing electricity demand from the mining and mineral processing sectors and decarbonization initiatives.


The IESO’s 2021 Annual Planning Outlook identified constraints with delivering supply resources from Northern Ontario to the rest of the province. The Northeast Bulk Plan will examine forecasted constraints under various electricity supply and demand conditions – including specific large load connection scenarios, investigate reinforcement options, and identify the nature, magnitude and timing for when the implementation of solutions would be required. A major focus of this plan will be to address the limitation of facilities between the City of Sudbury and Municipality of Wawa to meet future capacity and deliverability requirements. 


The IESO engages with local and regional communities, stakeholders and the general public to seek input to help inform planning activities. Learn more about engagement on this electricity planning initiative.

Area Overview

Northeast Ontario lies north of Lake Huron and east of Lake Superior, stretching from the French River and Manitoulin Island in the south, to Timmins, Temiskaming Shores and Cochrane in the North. The northernmost communities include Attawapiskat, Fort Albany and Moosonee, and to the east it lies along the Quebec border, and to the west, it includes the communities of Chapleau, Foloyet and Kapuskasing. From an electricity planning perspective, Northeast Ontario is comprised of four planning regions (North & East of Sudbury, East Lake Superior, North of Moosonee and Sudbury/Algoma) and consists of two radial 115 kV interconnection points with Quebec.


Northeast Ontario Bulk Planning Map


A public webinar was held on July 27, 2021 to provide an overview of the scope of the Northeast Bulk Plan including the assumptions and scenarios underlying the electricity demand forecast that will form the basis for identifying and characterizing future electricity needs, and more broadly the various electricity planning initiatives underway in Northern Ontario.