Learn about participation in Ontario’s electricity markets, as well as access the rules and manuals that govern the markets and the operation of Ontario's power system.
The IESO administers a series of markets and related programs that together comprise the province's wholesale electricity marketplace.
The IESO provides an extensive training program for market participants and those interested in learning more about Ontario’s electricity markets and related programs. Courses and materials are available for audiences of varying levels of expertise, including those new to the industry. Training opportunities include instructor-led courses as well as online resources.
The Market Rules & Manuals Library contains the documents needed to interact in Ontario's electricity marketplace.
The information contained in this section relates to the legacy wholesale market which was in effect from May 1, 2002 until April 30, 2025. These pages are archived for reference only.
