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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
Preliminary Hourly Regulation Clearing Prices 12/01/2017 12:06 AM EST CSV
Final Hourly Regulation Clearing Prices 12/01/2017 09:53 AM EST CSV
Final Hourly Reserve Zone Prices and Designations 02/12/2025 04:30 PM EST CSV
Preliminary Hourly Reserve Zone Prices and Designations 02/16/2025 01:06 PM EST CSV
Hourly Reserve Requirements 02/16/2025 01:06 PM EST CSV
Five-Minute Regulation Clearing Prices 02/16/2025 01:30 PM EST CSV
Five-Minute Reserve Zone Prices and Designations 02/16/2025 01:30 PM EST CSV
Five-Minute Reserve Requirements 02/16/2025 01:30 PM EST CSV