Connecting Today.
Powering Tomorrow.
The Independent Electricity System Operator (IESO) works at the heart of Ontario's power system. The IESO delivers key services across the electricity sector including: managing the power system in real-time, planning for the province's future energy needs, enabling conservation and designing a more efficient electricity marketplace to support sector evolution.
Electricity Planning for Toronto
Electricity demand in the city of Toronto is rising quickly. The IESO is in a new round of electricity planning to identify actions needed to ensure a reliable supply of electricity to the city for years to come. See our recent presentation or find information and resources in the Toronto Regional Plan Information Package.
2026 APO Demand Forecast
The IESO’s 2026 demand forecast projects significant increases in electricity demand throughout Ontario in the coming decades. It underscores the urgent need for investments in new electricity infrastructure to keep the system reliable, affordable and sustainable, and positioned to catalyze economic development in every corner of Ontario. See details of the forecast.
Stakeholder Engagement Meetings
The agenda for the November 18-19 and 21 stakeholder engagement meetings is now available.
Meeting materials and recorded presentations for the October stakeholder engagement meetings are also posted.
News and Updates:
Upcoming Events:
- eDSM Achievable Potential Study Update webinar December 09, 2025
- South and Central Bulk Planning webinar December 12, 2025