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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

Power Data Power Data

Looking for energy data?

You’ll find real-time and historical demand, supply, price and conservation data in the IESO’s Power Data section.

There you can compare hourly Ontario demand with the price in that hour. See also hourly supply output by fuel type as well as hourly imports and exports.

The Data Directory offers easy access to all IESO’s public reports, as well as historical data.

Two people taking in front of greenhouse in Southwestern Ontario Get Involved

The value of community engagement

Representatives from Ontario communities and the IESO share their perspectives about how working closely together helps shape Ontario’s electricity future and assists communities in achieving their energy goals.

Watch the video and read more about how the IESO is engaging with regions across Ontario in its planning process.

Market Renewal Sector Participants

Capacity auction high-level design released

After extensive stakeholder consultation, the high-level design for the Market Renewal Program’s incremental capacity auction (ICA) is now available. The ICA will help meet needs at the lowest cost by encouraging greater competition in securing resources and giving the IESO the flexibility to adjust to changing supply-demand dynamics. 

Learn more about the MRP.

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