As Ontario’s electricity market undergoes its most significant transformation in decades, Power Advisory is tracking the implementation of the IESO’s Market Renewal Program (MRP) in real time. Our weekly summaries provide timely, data-driven analysis of key trends, price signals, and market impacts. Power Advisory will help stakeholders navigate the evolving landscape with clarity and confidence. Whether you're a market participant, policymaker, or energy consumer, these updates offer grounded insights to support strategic decision-making in the new market environment.
The IESO has released the Dispatch Deviation report for August. Although the market interventions have decreased from the high set in July, they remain elevated as compared with August 2024.
Read Full ReportDay-Ahead (DA) zonal prices in the last week increased compared to the previous three weeks while Real-Time (RT) zonal prices decreased compared to the previous three weeks.
Read Full ReportLast week, similar to the previous week, posted some of the lowest prices since the launch of the renewed market. These low prices are mainly reflective of the drop in cooling load as temperatures become cooler.
Read Full ReportThe IESO has released the Dispatch Deviation report for July, which has set a new high for market interventions since March 2022 (no reports are published prior to this date).
Read Full ReportOntario Demand reached 24,789 MW on August 11, HE 18 – marking the second highest peak demand of 2025. The highest peak demand for 2025 continues to be 73 MW higher at 24,862 MW and occurred at the end-of-June heat wave.
Read Full ReportPower Advisory has undertaken a review of energy prices in July 2025 compared to the same month last year to better understand if pricing outcomes in the renewed market broadly align with the legacy market.
Read Full ReportBoth the Day-Ahead (DA) and Real-Time (RT) zonal prices increased compared to the previous week. DA zonal prices ranged from $60/MWh (Northwest) to $91/MWh (Ottawa), while RT zonal prices ranged between $14/MWh (Northwest) and $89/MWh (Ottawa). In both the Northeast and Northwest zones, congestion and losses increased in RT as compared to DA.
Read Full ReportThe IESO has published the Dispatch Deviation Report for June 2025, which indicates the highest number of monthly market interventions by the IESO since March 2022.
Read Full ReportPower Advisory undertook an analysis to better understand the implications of the new two-settlement system for merchant wind facilities in Ontario.
Read Full Report