IESO Implementing ‘True-up’ on Renewed Market Rules

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Real-time prices on Nov. 11 at 12:25 p.m. | IESO

Nov 11, 2025 | Rich Heidorn Jr.

After more than six months of operations under its Market Renewal Program, IESO is implementing “non-substantive” rule changes it says will improve clarity and alignment.

Ancillary Services Energy Market IESO Reserves

Keywordsday-ahead market (DAM)IESO Board of Directors Independent Electricity System Operator (IESO)make-whole payments Market Renewal Program real-time market

Rich Heidorn Jr.

IESO Tweaking Make-whole Payments for Operating Reserves

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