Market Participant Readiness

The Market Renewal Program (MRP) is modernizing Ontario's electricity markets to address inefficiencies and will be a building block to embrace the continued transition to new and diverse resources. Stakeholders are encouraged to participate in the engagements and readiness activities in support of MRP.

Market Participant Readiness

Market Renewal Program Market Participant Readiness Plan

This document outlines the key approach and timelines for Market Participant Readiness activities, and forms the foundation of the specific tactical planning that is being created to support market participants through the Market Renewal transition.

Market Participant Orientation

This overview is intended to assist IESO Market Participants in preparing for the launch of the renewed market when IESO’s Market Renewal Program (MRP) goes live in May 2025. It provides an overview of how the market is changing, how that may impact your organization, what you may need to do to prepare, and provides links to resources to assist you with these preparations. IESO will update this document from time to time, as new materials become available.

Timeline of Market Participant Readiness Activities

This chart shows the timing for delivery of key Market Renewal Program (MRP) documents that will help participants identify the impact of changes on their systems and processes, as well as anticipated timing for key readiness activities.

Download image

Registration Launch and Reference Level Launch

In preparation for MRP Go-Live, the IESO will update its registration system and workflows in Online IESO to reflect the renewed market on May 1, 2025.

Market Renewal Launch

The IESO has drafted version 4.0 of the MRP Readiness Plan for Market Renewal Launch to assist Market Participants and external stakeholders with the transition to the renewed market. This document provides a comprehensive roadmap for the Market Transition, described in the pre-launch preparation milestones, activities, and actions, as well as the specific cutover steps before, during, and after the Market Renewal Launch window.

Changes in version 4.0 include the following:

Page 9 – Added an activity for “Mid-April 2025” for Market Participants to confirm Online IESO Access Permissions
Page 10 – Designated the URLs published previously as belonging to the “New” Production systems.
Page 20 – Added a step on May 2 from 04:00 – 04:15 EST informing Market Participants that the DAM Notification webpage goes live. Added a step on May 2 from 05:00 – 05:15 EST information Marker Participants that they can now register as Virtual Traders in Online IESO.”

Additional Resources

Webinar: Overview of the Transition to the Renewed Market (April 16, 2025)
- Presentation
- Recorded Presentation