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Get involved with power planning for your region.
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Investing in energy efficiency provides opportunities beyond energy savings.
Innovation
Find out what the IESO is doing to enable innovation in support of its mandate.
Indigenous Relations
Indigenous communities are increasingly playing an active role in Ontario's energy sector.
microFIT Program
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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Preparing an orderly transition from natural gas generation to other forms of non-emitting supply.
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Data and visuals of provincial/local prices for day-ahead and real-time markets, plus provincial/zonal demands.
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Snapshot of key demand, supply and price information for Ontario.
Data Directory
A collection of all reports provided on the IESO Public Reports site as well as access to historical data.
Monthly Market Reports
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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eDSM Commercial HVAC Demand Response (DR) Program
eDSM Commercial HVAC Demand Response (DR) Program
24 Jun 2025
Electricity Demand Side Management Framework
