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About the IESO
Managing the Power System
Overseeing the Electricity Market
Planning for the Future
Working with Our Sector Partners
Ontario's Electricity Grid
Supply Mix and Generation
Distributed Energy Resources
Imports and Exports
The Evolving Grid
Securing New Energy Supply
Planning the Electricity System
Decarbonizing the Electricity Sector
Decarbonizing Ontario's Economy
Natural Gas Phase-Out Study
Electricity Pricing Explained
The Value of Electricity Markets
The Hourly Ontario Energy Price
Pricing for Residents and Small Businesses
Pricing for Medium and Large Businesses
Electricity Facts and Tools
Electricity Explained Video Series
Find Your Local Distribution Company
There are many ways to participate in energy efficiency efforts - learn how.
Investing in energy efficiency provides opportunities beyond energy savings.
Get involved with power planning for your region.
A range of funding programs to help make Ontario’s electricity system cleaner, greener and smarter.
Find out what the IESO is doing to enable innovation in support of its mandate.
Indigenous communities are increasingly playing an active role in Ontario's energy sector.
Provide input and feedback on proposed changes affecting Ontario's electricity sector.
Updates and resources for Ontario's microFIT Program are available here.
Engaging with communities is an important part of maintaining a reliable electricity supply, now and in the future.
Demand, Supply, and Price Graphs
This section provides the opportunity to compare real-time demand, supply and price data, as well as access to historical reports.
This Hour’s Data
Read more about Ontario’s electricity demand records, forecasts and related real-time reports.
Get current and historical data for Ontario’s transmission and distribution level supply and yearly import/export data.
A collection of all reports provided on the IESO Public Reports site as well as access to historical data.
Learn about electricity price trends and gain access to historical monthly average prices, global adjustment rates and time-of-use.
Daily Market Summaries
Daily summaries of market activity.
Monthly Market Reports
Monthly summaries of market activity.
Latest news from the IESO
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