System Maintenance

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 Deployment and Reserve Price Formation FAQ PDF
 12.17.2024
Guidance for Resources with Synchronized Reserve Assignments during Synchronized Reserve Events PDF
 12.17.2024
Synchronized Reserve Offer Cap Penalty XLS
 12.3.2024
Reserves Procedure Memo PDF 5.18.2023
Changes to the EMS Reserve Element Communication PDF 11.20.2024

Zone Preliminary Billing Data

  
Non-Synchronized Reserve
RTO Synchronized Reserve
Secondary Reserve

Market-Based Regulation
Date
RTO Regulation Signal Data ZIP (472 MB)
3.19.2025
Regulation Uplift and Lost Opportunity Cost PDF
1.22.2025
Regulation Effective MW Requirement Definition PDF
6.3.2024
Regulation Two-Part Cost Based Offer: Other Resources XLS 11.21.2022
Historical Market Data
 
Regulation Control PDF
8.29.2023
Generation Run Reason (GENRUNR) Values XLS
5.6.2025

Regulation Self-Test Signals

  
40-Minute Performance Score Template XLS
5.8.2024
Normalized Signal Test (after 1.30.2017)
Reg A | Reg D XLS
5.8.2024

Zone Preliminary Billing Data

  
PJM Regulation Zone

Regulation Redesign
Date
Regulation Effective MW Requirement Definition (2025-2026) PDF
4.30.2025
Regulation Cost-Based Offer Validation Phase I XLS
4.30.2025
Self-Administered Regulation Test XLS
4.30.2025
40-Minute Performance Score Template XLS
4.30.2025
XML Schema XSD 4.25.2025
PJM External Interface Specification Guide PDF 4.25.2025
Regulation Redesign Phase 1 FAQ PDF
4.4.2025

Black Start Service
 
Revenue Requirements  

Five (5) Year Review

Active Requests for Proposals

Expired Requests for Proposals
Date
RTO Wide RFP for Black Start Service and Black Start Fuel Assurance FAQs PDF
 7.6.2023
2023 RTO-Wide Five-Year Selection Process Request for Proposal for Black Start Service and Black Start Fuel Assurance PDF  6.20.2023
PJM 2023 RTO Wide Black Start RFP Level 1 Response Form PDF  6.20.2023
PJM 2023 RTO Wide Black Start RFP Level 2 Proposal Data Collection Form - Rev 1 XLS  8.22.2023
2022 PECO 1st Incremental Black Start Request for Proposal PDF  8.1.2022
PJM Black Start RFP Level 1 Response Form PDF  1.28.2019
2021 BGE/PEPCO Zones Black Start Service Incremental Request for Proposal PDF   4.7.2021
2019 BGE-PEPCO 1st Incremental Black Start RFP PDF
 2.1.2019
Black Start RFP FAQs PDF
  3.1.2018
PJM 2018 RTO Wide Black Start RFP PDF 
2.1.2018
2nd Incremental Request for Proposal for Northeast Ohio & Western Pennsylvania PDF
7.28.2015
Incremental Request for Proposal for Northeast Ohio & Western Pennsylvania PDF
11.24.2014
Incremental Request for Proposal for AEP Zone PDF
4.11.2014

Test & Cost Submittal Forms

PJM Calculated Annual Capital Recovery Factor (CRF)

Contact PJM
Member Community

(866) 400-8980
(610) 666-8980
Member Relations

Training
How ancillary services work in PJM
Upcoming Training

Tools
Overview
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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