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Market Rules & Manuals Library

The Market Rules & Manuals Library contains the documents needed to interact in Ontario's electricity marketplace.

The Market Rules, which are approved by the IESO Board of Directors, govern the IESO-controlled grid and IESO-administered markets.

Market manuals and procedures, approved by IESO management, provide more detailed descriptions of the requirements for various activities specified in the Market Rules, and include the forms and agreements required by market participants.

The current set of market documents known as Baseline 44.0, was updated and published on September 16, 2020.

IMPORTANT: Capacity Auction Rules Library - Capacity Auction Participants, including Demand Response Auction Participants, must consult the Point-in-time Rules applicable to the Capacity Auction or Demand Response Auction in which they participated, by date, for purposes related to their participation or to the satisfaction of program specific obligations. The Point-in-time Rules may differ in material respects from the current set of market documents posted below. 

See Capacity Auction Rules Library for applicable Point-in-time Rules for Capacity Auction Participants.

Status Document Published Date