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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

Planning for Grid Operations

The IESO’s 18-Month Outlook looks at Ontario’s demand forecast, as well as the adequacy of generation and transmission resources over the next 18 months. Read the report and supporting materials.

See also the IESO’s Q2-2017 Conservation Progress Report that highlights results of conservation programs, as well as the IESO's quarterly Contracted Electricity Supply Report.

Get Involved

Participate in A Regional Electricity Forum

Hear from industry experts, local leaders and members of the community on how electricity can be harnessed to support the growth, resiliency and vibrancy of communities. Five Regional Electricity Forums will be held around Ontario this fall. Each forum will address regional-specific interests. The next forum will be in Vaughan on December 11.


See Forum Overview for an event near you.

Screenshot of the Time of Use tool Learn

The Rate You Pay Depends on the Time of Day

Depending on the time of day and day of the week, most residential and small businesses pay on-, mid-, or off-peak Time-of-Use (TOU) rates for electricity. The TOU display shows the current rate and the time the next rate starts. Getting familiar with TOU rates and schedules can help you reduce electricity use or shift electricity use to a lower rate period.

Kilowatt way graphics

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