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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: the Synchronized Reserve Market, the Non-Synchronized Reserve Market, the Day-Ahead Scheduling Reserve Market and the Regulation Market. Learn more about ancillary services at the Learning Center.
Ancillary Service Market Results

Synchronized Reserve
Date
Synchronized Reserve Cost Based Offer Validation XLS   4.19.2021
Communication Process for Consideration of Some Resources for Tier 1 Synchronized Reserve PDF   6.19.2020
Communication of Synchronized Reserve Quantities to Resource Owners PDF
 3.18.2019
Reserve Zone & Sub-Zone Classifications PDF   7.10.2020
Mid-Atlantic-Dominion Subzone Bus & Resource List - Effective 9.17.2021 XLS
 9.21.2021
Historical Synchronized Reserve Events
Modification to Synchronized Reserve Market to Better Reflect the Operating Characteristics of Participating Generating Unites PDF
7.1.2013

Zone Preliminary Billing Data

  
Day-Ahead Scheduling Reserve
Non-Synchronized Reserve
RTO Synchronized Reserve

Market-Based Regulation
Date
Regulation Two-Part Cost Based Offer Validation XLS   4.16.2021
RTO Regulation Signal Data for 7.19.2019 & 7.20.2019 XLS   10.22.2019
Regulation Requirement Definition PDF  8.2.2019
RTO Regulation Signal Data ZIP (434MB)
 7.2.2021
Regulation Uplift and Lost Opportunity Cost PDF
3.18.2019
Regulation Market Concepts - Benefits Factor Calculation PDF
 3.18.2019
Historical Market Data
 

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
Normalized Signal Test: RegA | RegD CSV
8.20.2014
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

Operating Reserve Demand Curve
Date
ORDC Description PDF
3.30.2021
   
Mid-Atlantic & Dominion Reserve Subzone   
30-Minute Uncertainty CSV
7.28.2021
60-Minute Uncertainty CSV 
7.28.2021
Primary Reserves Synchronous Reserves ZIP
7.28.2021
30-Minute Reserves  ZIP |  XLS
7.28.2021
Primary Reserves XLS
7.28.2021
Synchronous Reserves XLS
7.28.2021
   
PJM RTO   
30-Minute Uncertainty CSV 
7.28.2021
60-Minute Uncertainty CSV 
7.28.2021
Primary Reserves Synchronous Reserves ZIP
7.28.2021
30-Minute Reserves  ZIP |  XLS
7.28.2021
Primary Reserves XLS
7.28.2021
Synchronous Reserves XLS
7.28.2021

Black Start Service
 
Revenue Requirements  

Active Requests for Proposals

Expired Requests for Proposals

Test & Cost Submittal Forms

Day-Ahead Scheduling Reserve
 
Seasonal Conditional Demand Factor for DASR Requirement PDF  

Contact PJM
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(610) 666-8980
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Training
How ancillary services work in PJM
Upcoming Training
Demand Response

Tools
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Data Miner - access historical data
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Markets Gateway
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Opportunity Cost Calculator

eDART
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Training Presentations

Manuals

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