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Market Renewal

Market Renewal

Welcome to the IESO Renewed Market

The renewed market was launched on May 1, 2025, improving the way electricity is scheduled and priced across the province. These changes ensure we can continue to make the most cost-effective use of our supply every hour of every day as the grid expands to meet growing demand and incorporate new technologies. See more on the renewed market.

cyber security - monitors Background and Resources

A Renewed Market

Learn about improvements to the market that will pave the way to a more accessible and resilient future grid and support Ontario's economic prosperity.

Watch the video