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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 02/18/2026 10:30 AM EST CSV
Day-Ahead Hourly Reserve Requirements, Prices, Designations, and Forecast 02/18/2026 01:11 PM EST CSV
Final Hourly Reserve Zone Prices and Designations 02/18/2026 01:39 PM EST CSV
Preliminary Hourly Reserve Zone Prices and Designations 02/18/2026 07:06 PM EST CSV
Hourly Reserve Requirements 02/18/2026 07:06 PM EST CSV
Five-Minute Regulation Clearing Prices 02/18/2026 07:40 PM EST CSV
Five-Minute Reserve Zone Prices and Designations 02/18/2026 07:40 PM EST CSV
Five-Minute Reserve Requirements 02/18/2026 07:40 PM EST CSV