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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. 

Stay Connected

Sector Participants

Engaging the Sector

The IESO regularly seeks input from stakeholders and community representatives on initiatives that affect them. We do this through a variety of forums, including the Stakeholder Advisory Committee whose members represent interested energy sector parties.

The August 23 Stakeholder Advisory Committee meeting welcomes Michael Cleland with the Positive Energy Project to discuss the University of Ottawa’s efforts to strengthen public confidence in energy decision-making. The agenda, materials and registration details are now available.


Tracking the Solar Eclipse

Southern Ontario is expected to experience a partial solar eclipse on Monday, August 21, 2017.

The IESO has been actively monitoring weather and demand forecasts for this celestial event to ensure smooth operations for Ontario’s bulk power system. The IESO will be ready to respond to changes in demand and generation output to ensure reliable service for Ontario consumers.

Read more about the solar eclipse and resources to track the day’s events.

Control Room Operator Learn

What We Do

The IESO works at the heart of Ontario’s power system ensuring there is enough power to keep the lights on, today and into the future.

Learn about the IESO and our role as Ontario's system and electricity market operator, as well as how we promote conservation and plan for future electricity needs through engagement with our stakeholders and communities. Read more.

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Kilowatt Way

Whether you live in an apartment or a house – four quick questions will reveal how you use electricity and show you ways to become more energy efficient.

Visit Kilowatt Way

IESO Stakeholder Summit

The IESO thanks all those who participated in the 2017 Stakeholder Summit on June 12, 2017, in Toronto. Slide presentations and a recorded video of the event are posted on the Summit page.