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Investing in energy efficiency provides opportunities beyond energy savings.
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Find out what the IESO is doing to enable innovation in support of its mandate.
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Indigenous communities are increasingly playing an active role in Ontario's energy sector.
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Updates and resources for Ontario's microFIT Program are available here.
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Provide input and feedback on proposed changes affecting Ontario's electricity sector.
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Engaging with communities is an important part of maintaining a reliable electricity supply, now and in the future.
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Snapshot of key demand, supply and price information for Ontario.
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A collection of all reports provided on the IESO Public Reports site as well as access to historical data.
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Monthly summaries of market activity.
Peak Tracker
Follow the Peak Tracker to monitor forecasted Ontario demand for the next 24 hours.
Demand Overview
Read more about Ontario’s electricity demand records, forecasts and related real-time reports.
Supply Overview
Get current and historical data for Ontario’s transmission and distribution level supply and yearly import/export data.
Price Overview
Learn how electricity prices are determined in Ontario’s electricity market, including global adjustment rates and time-of-use.
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Updates to IESO Monitoring Requirements-Phasor Data
Updates to IESO Monitoring Requirements-Phasor Data
26 Jun 2025
Updates to IESO Monitoring Requirements Phasor Data
