System Information Exceptions to Three Percent Three Pivotal Supplier Test Threshold CSV 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 Generation Outlet Interfaces CPL-DOM: PDF Special Protection Scheme (SPS/RAS) Installation/Removal Homer City RAS Retirement The Homer City RAS is expected to be retired and removed by the end of 2023. The RAS is no longer operational. Procedural Updates Red Lion TX50 DPL has informed PJM that the 500/230KV TX50 transformer at Red Lion has been off-putting gas. The transformer will be taken out of service until it can be replaced, which is estimated to be in June 2029. Until then, the transformer will be used as a hot standby that can be energized in an emergency only. 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 DUQ: Common Trench Cable Ratings XLS PECO: Limerick 4A & 4B XFMR Ratings XLS PEPCO: Common Trench Cable Ratings XLS PSEG: Common Trench Cable Ratings XLS Voltage Limits The file below is scheduled to be retired from pjm.com towards the end of 2026. It is and will remain publicly available in eDART – any users in eDART can access it: 1. Trans. Tickets > PJM Posting Files > voltagelimits.csv 2. TERM > PJM Posting Files > voltagelimits.csv 3. eDART CLI PJM Posting Files download XSD PJM RTO & Transmission Owner Voltage Limits CSV Automatic Sectionalizing Schemes Manual 3, Attachment E: Automatic Sectionalizing Schemes Pending Approval & Recent Changes PDF Automatic Sectionalizing Schemes PDF Transmission Facilities Information Reliability & Markets Tariff Facility Modifications Approved or Denied for 6.1.2026 | 6.1.2025 | 6.1.2024 | 6.1.2023 | 6.1.2022 | 6.1.2020 | 6.1.2019 | 6.1.2018 XLS To be Effective: June 2026 as Proposed by Transmission Owners - 12.10.2025 XLS June 2025 as Proposed by Transmission Owners - 12.19.2024 XLS June 2024 as Proposed by Transmission Owners - 1.8.2024 XLS June 2024 as Proposed by Transmission Owners - 12.1.2023 XLS June 2023 as Proposed by Transmission Owners - 1.5.2023 XLS June 2023 as Proposed by Transmission Owners - 12.1.2022 XLS June 2022 as Proposed by Transmission Owners - 3.2.2022 XLS June 2020 as Proposed by Transmission Owners - 1.31.2020 XLS List of Designated Network Resources Transmission Facilities The file below is scheduled to be retired from pjm.com towards the end of 2026. It is and will remain publicly available in eDART – any users in eDART can access it: 1. Trans. Tickets > PJM Posting Files > equiplist.csv 2. TERM > PJM Posting Files > equiplist.csv 3. eDART CLI PJM Posting Files download XSD Complete Descriptions CSV Outage Information Regional Transmission Expansion Plan Construction Status Transmission Outage Cancellation & Rescheduling After Day-Ahead Market Metrics 2026 | 2025 | 2024 | 2023 | 2022 | 2021 | 2019 PDF EMS Model Builds Any schedule changes will be sent to DMS Members and posted on the Web Calendar. Schedule PDF