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Ancillary Services

Recently Published Ancillary Services Data

Download the latest reports on clearing prices in the Regulation Markets, reserve requirements, and reserve-zone prices and designations.
 

"Ancillary services" are a group of market services, such as reserves and regulation, that ensure reliability of the power system at all times and especially during periods of heavy demand or system emergencies. Like electricity, ancillary services are bought and sold through wholesale markets.
 

 
Ancillary Services
Description Timestamp Download
Day-Ahead Ancillary Services Strike Prices 09/15/2025 10:30 AM EDT CSV
Day-Ahead Hourly Reserve Requirements, Prices, Designations, and Forecast 09/15/2025 12:52 PM EDT CSV
Final Hourly Reserve Zone Prices and Designations 09/15/2025 04:15 PM EDT CSV
Preliminary Hourly Reserve Zone Prices and Designations 09/15/2025 06:06 PM EDT CSV
Hourly Reserve Requirements 09/15/2025 06:06 PM EDT CSV
Five-Minute Regulation Clearing Prices 09/15/2025 06:55 PM EDT CSV
Five-Minute Reserve Zone Prices and Designations 09/15/2025 06:55 PM EDT CSV
Five-Minute Reserve Requirements 09/15/2025 06:55 PM EDT CSV