Markets & Operations

System Information


Generation Performance Monitor and Degree of Generator Performance White Paper PDF 
Exceptions to Three Percent Three Pivotal Supplier Test Threshold XLS
Historical Area Control Error Data
Potential Transmission Switching Options
Critical Energy Infrastructure Information
Emergency Procedures
Real-Time Operational Data - This page includes locational marginal pricing, transfer limits, instantaneous load and transmission constraints
Historical Load Data
Seven-Day Load Projections & Constraint Forecast
Historical 1800 Load Forecast
Long-Term Firm Transmission Service Requests - system impact studies
Day-Ahead Interface Flows & Limits

Pricing Interface Definitions

England:  PDF | CSV
Red Bank:  PDF | CSV
Warren PDF
Yorktown:  PDF | CSV

Generation Outlet Interfaces

PA Central:  PDF CSV 

Reactive Transfer Interfaces

Western Interface Definition Change:  PDF

Special Protection Scheme (SPS/RAS) Installation/Removal

Quad Cities/Cordova RAS Retirement
The Quad Cities/Cordova RAS has been retired as of 8.23.2019. The RAS retirement was announced earlier this year.

Procedural Updates

The following procedure will be included in the upcoming Manual-03 publication:
Wescosville Switching Procedure PDF

Thermal Ratings

Ratings Information
Manual-3: Attachment F Short-Term Emergency Line Ratings XLS
Crosstown Common Trench Circuit Ratings XLS
230KV Harbor Crossing Cables (2344 & 2345) - Special Ratings XLS
Common Trench Cable Ratings XLS

Voltage Limits

PJM RTO and TO Voltage Limits CSV

Automatic Sectionalizing Schemes

Manual 03: Attachment E Automatic Sectionalizing Schemes Pending Approval and Recent Changes PDF
Manual 03: Attachment E Automatic Sectionalizing Schemes PDF

Transmission Facilities Information

Reliability & Markets Tariff Facility Modifications
Approved or Denied for 6.1.20206.1.2019 | 6.1.2018 XLS
To be Effective:
June 2021 as Proposed by Transmission Owners - 3.1.2021 XLS
June 2020 as Proposed by Transmission Owners - 12.1.2020 XLS
June 2020 as Proposed by Transmission Owners - 1.31.2020 XLS
June 2019 as Proposed by Transmission Owners - 11.30.2018 XLS
List of Designated Network Resources
Transmission Facilities 
Complete Descriptions CSV
Outage Information
Regional Transmission Expansion Plan Construction Status

Transmission Outage Cancellation & Rescheduling After Day-Ahead Market Metrics

2021202020192018 PDF

EMS Model Builds

Next Model Build: The Winter 2020 EMS Model Build is scheduled for December 8, 2020.

Future Model Builds:


Spring 2021  3.9.2021 
Summer 2021  5.18.2021 
Fall 2021  9.14.2021 
Winter 2021  12.7.2021 

Past Model Builds:


Scheduled  Actual Date Implemented 
Fall 2020  9.15.2020 9.15.2020
Summer 2020  5.27.2020  5.27.2020 
Spring 2020 3.10.2020  3.10.2020 
Winter 2019  12.10.2019  12.10.2019 
Fall 2019 9.24.2019  9.24.2019 
Summer 2019  5.21.2019  5.21.2019 
Spring 2019  3.12.2019  3.12.2019