The five planning regions in the GTA and Central Ontario area includes all of the Greater Toronto Area, stretches north to Parry Sound/Muskoka, and roughly spans the area from Meaford to Minden.
The GTA North Region (York Region) roughly comprises of municipalities in the Regional municipality of York, including the Cities of Markham, Richmond Hill and Vaughan, the Towns of Aurora, East Gwillimbury, Georgina, Newmarket, Whitchurch-Stouffville, and the Township of King. Since the electricity system was not developed along municipal boundaries, customers in some areas near the boundaries of York Region are supplied from infrastructure outside this region. Some customers in Durham and Simcoe counties, and the City of Toronto are supplied from the York Region infrastructure.
The region also includes a number of Indigenous communities including:
Alderville First Nation
Beausoleil First Nation
Curve Lake First Nation
Chippewas of Georgina Island First Nation
Hiawatha First Nation
Haudenosaunee Development Institute/Hereditary Chiefs Council
Kawartha Nishnawbe
Mississaugas of Scugog Island First Nation
Rama First Nation
Mississaugas of the Credit First Nation
Six Nations of the Grand River
The local distribution companies providing services to customers in the area include:
Alectra Utilities
Hydro One Networks Inc.
Newmarket-Tay Power Distribution Ltd.
Toronto Hydro Electric System
Community Engagement
The IESO engages with local and regional communities to seek input to help inform planning activities.
A new regional planning cycle is currently underway in York Region with the completion of a Scoping Assessment Outcome Report and Terms of Reference in October 2023. Based on emerging electricity needs identified in this current cycle, a comprehensive planning approach will be undertaken to develop an Integrated Regional Resource Plan (IRRP) for York Region.
Engagement will continue throughout the development of the plan with more details to follow. The York Region engagement webpage continues to be a source of ongoing information related to regional planning activities, including any upcoming engagement opportunities.
