Capacity Auction
IESO's Capacity Auction allows aggregators and large customers to bid capacity into Ontario’s electricity market.
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#C&I
Capacity Auction
is inactive or no longer accepting new applicants. Add your assets now and we’ll notify you the moment it reopens.
Register
Service details
Service type
Load reduction
Eligible technologies
No items found.
Competition frequency
Locational scope
June to September
Seasonality
Year-round
Eligibility
Direct
Aggregated
Residential
This participation route is eligible.
This participation route may be eligible
This participation route is not eligible.
This participation route is eligible.
This participation route may be eligible
This participation route is not eligible.
Commercial & Industrial
This participation route is eligible.
This participation route may be eligible
This participation route is not eligible.
This participation route is eligible.
This participation route may be eligible
This participation route is not eligible.
Front-of-the-Meter
This participation route is eligible.
This participation route may be eligible
This participation route is not eligible.
This participation route is eligible.
This participation route may be eligible
This participation route is not eligible.
Aggregators and C&I customers may participate by bidding qualified capacity into the auction. Participants submit capacity bids in the annual auction through Online IESO.
Key details
Participants submit capacity bids in the annual auction through Online IESO. Resources are dispatched during system needs per market rules.
Participants are paid based on auction clearing price and must meet performance obligations.
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Listing last updated on
11 August 2025
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