Markets & Operations

Ancillary Services

Ancillary services help balance the transmission system as it moves electricity from generating sources to ultimate consumers. PJM operates several markets for ancillary services:

In both Day-Ahead and Real-Time

  • The Synchronized Reserve Market
  • The Non-Synchronized Reserve Market
  • The Secondary Reserve Market

In Real-Time only

  • The Regulation Market

 Learn more about ancillary services at the Learning Center.



Real-Time Ancillary Service Market Results

Day-Ahead Ancillary Service Market Results

Reserve Price Formation

Date
Historical Synchronized Reserve Events

Reserve Subzone Bus Mapping

Reserve Subzone Resource Mapping

Synchronized Reserve Offer Cap Penalty PDF 9.23.2022
Reserves FAQ PDF 9.22.2022
Mid-Atlantic-Dominion (MAD) Subzone Bus and Resource List - Effective 10.1.2022 XLS
11.21.2022
Changes to the EMS Reserve Element Communication PDF   9.20.2022

Zone Preliminary Billing Data

 
Non-Synchronized Reserve
RTO Synchronized Reserve
Secondary Reserve

Market-Based Regulation

Date
Regulation Uplift and Lost Opportunity Cost PDF
3.17.2022
Regulation Two-Part Cost Based Offer: Battery/Flywheel Resources XLS
Other Resources XLS
 
4.16.2021
11.21.2022
Regulation Requirement Definition PDF  8.2.2019
RTO Regulation Signal Data ZIP (434MB)
7.2.2021
Regulation Market Concepts - Benefits Factor Calculation PDF
3.18.2019
Historical Market Data
 
Regulation Control PDF
11.2.2022
Generation Run Reason (GENRUNR) Values XLS
11.2.2022
Generator Voltage Schedule PDF
11.3.2022

Regulation Self-Test Signals

 
Normalized Dynamic and Traditional Regulation Signals - May 2014 XLS
8.21.2014
Normalized Signal Test (after 1.30.2017):  RegA | RegD CSV
3.13.2019
40-Minute Performance Score Template - Updated to Reflect August MRC Changes XLS
10.9.2013

Zone Preliminary Billing Data

 
PJM Regulation Zone

Regulation Performance Impacts Templates

Date
Proposed Benefits Factor Formulation – Version 1.1 XLS
9.15.2015

Black Start Service

 
Revenue Requirements  







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Training

How ancillary services work in PJM
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Markets Gateway

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eDART

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Training Presentations

Manuals

 
M-10: Pre-Scheduling Operations
WEBCurrentRedline PDF Section 2
M-11: Energy & Ancillary Services Market Operations 
WEBCurrentRedline PDF Section 4
M-12: Balancing Operations 
WEBCurrentRedline PDF Section 4
M-14D: Generator Operational Requirements 
WEBCurrentRedline PDF Section 10
M-15: Cost Development Guidelines
CurrentRedline PDF Sections 2-11        
M-27: Open Access Transmission Tariff Accounting 
WEBCurrent | Redline PDF Section 7
M-28: Operating Agreement Accounting
WEBCurrent | Redline PDF Sections 4-7
M-36: System Restoration 
WEBCurrent | Redline PDF All Sections