The IESO continues to explore improvements to the market design, leading to increased efficiency, transparency, and competition. This information session focuses on a change to the initialization status of NQS resources in the Day-Ahead Market (DAM). The updates being made will enable the existing optimization algorithm to better reflect actual resource status and availability.
Details on the DAM IHO can be found in Market Manual 4.2. This manual will be updated as part of the IESO's June Baseline process.
The document below is intended to provide additional information for clarification purposes regarding the changes to Market Manual 4.2 that was raised during the public information session on March 24, 2026.
