Upcoming Changes

Increased Reserve Requirements

1.8.2026 00:00 to 12.31.2026 00:00

Due to the non-performance of committed Synchronized Reserve resources during Synchronized Reserve Events since the implementation of Reserve Price Formation (October 1, 2022) and to maintain compliance with NERC Standards, effective from May 19, 2023, PJM carried an additional 30% on the Reliability requirement component of Synchronized and Primary reserve in the RTO only in the Day-Ahead, and Real-time Markets for all hours. Effective January 9, 2026 instead of 30% PJM will carry an additional 20% on the Reliability requirement component of Synchronized and Primary reserve in the RTO only in the Day-Ahead, and Real-time Markets for all hours until further notice.

For example (rounded to whole MW): If the largest single contingency = 1,630 MW

Default (100% of largest contingency)

Synchronized Reserve requirement: 1,630*1 + 190 = 1,820 MW

Primary Reserve requirement: 1,630*1.5 + 190 = 2,635 MW

30-Minute Reserve requirement: Max(3,000, gas contingency, PR reliability) + 190 = 3,190 MW

Increased reliability by 20%

Synchronized Reserve requirement: 1,630*1.2 + 190 = 2,146 MW

Primary Reserve requirement: 1,630*1.2*1.5 + 190 = 3,124 MW

30-Minute Reserve requirement: Max(3,000, gas contingency, PR reliability) + 190 = 3000 + 190 = 3,190 MW

If you have any questions regarding this message, please contact PJM Customer Service at (866) 400-8980 or send an email to custsvc@pjm.com. Thank you.

Hudson Scheduling Restriction (NY outage)

9.24.2026 15:45 to 1.6.2027 00:00

The Hudson path is restricted to 300MW from Sep 24, 2026 15:45 until Jan 6, 2027 00:00 due to NY outage.

Please reference the NY system for the outage ticket in the event of updates done after this posting.

Formula Rate Data Submission Reminder: Nov 2026

10.7.2026 00:00 to 12.31.2026 23:59

As year-end approaches, some TOs will be submitting formula rate filings for January 2027 - December 2027. Please enter your January 2027 - December 2027 Formula Rate Data into TC Planner by November 14, 2026. Timely submission is important for TC Planner to function well.

Application background, required actions, and available resources are provided below.

Background:

On April 11, 2024 at 3 p.m. EPT PJM launched a new tool, TC Planner tool. Transmission Cost Planner (TC Planner) replaced the previous Transmission Cost Information Center (TCIC). It helps PJM stakeholders in understanding current transmission costs and estimating future transmission costs.

Actions Requested:

1.Access Request: To add formula rate data into TC Planner for your company, write access is needed.

1) An existing account in the PJM Account Manager will automatically grant users read-only access to the TC Planner. No additional access requests are required beyond having a valid Account Manager account.

2) To request write access or to set up a new PJM account, please visit tcplanner-take-a-tour

2.Add both planning and settlement formula rate data (January 2027 - December 2027) into TC Planner for your company by November 14, 2026

Materials & Support:

1.We have available materials, including the User Guide, a Training Demo and Take A Tour document for TC Planner. Those materials show how to submit access request and add formula rate data into TC Planner.

2.Please contact TC Planner support for any questions or concerns.

Linden Scheduling Restriction

11.2.2026 08:00 to 11.7.2026 15:00

The Linden path is restricted to 0MWs from Nov 2, 2026 08:00 until Nov 7, 2026 15:00 due to eDART ticket #1307203.

Please reference the Transmission Facilities Outage List for the above mentioned eDART ticket in the event of updates done after this posting.

https://edart.pjm.com/reports/linesout.txt

Maintenance to eDART in Prod. and Train on Nov. 4 from 10:00 a.m. - 4:00 p.m. EPT

11.4.2026 from 10:00 to 16:00

PJM will be performing system maintenance to eDART in the Production and Train environments on Wednesday, November 4, 2026 from 10:00 a.m. - 4:00 p.m. EPT (1000-1600 hours).

During this maintenance, there will be outages of up to 1 minute in Production and 15 minutes in Train.

The maintenance will impact the eDART Command Line Interface (CLI) only. There will be no impact on the User Interface (UI).

Maintenance to eDART in Prod. and Train on Nov. 4 from 10:00 a.m. - 4:00 p.m. EPT

11.4.2026 from 10:00 to 16:00

PJM will be performing system maintenance to eDART in the Production and Train environments on Wednesday, November 4, 2026 from 10:00 a.m. - 4:00 p.m. EPT (1000-1600 hours).

During this maintenance, there will be outages of up to 1 minute in Production and 15 minutes in Train.

The maintenance will impact the eDART Command Line Interface (CLI) only. There will be no impact on the User Interface (UI).

Maintenance to OASIS and ExSchedule in Prod. on Nov. 4 from 7:30 p.m. - 11:30 p.m. EPT

11.4.2026 from 19:30 to 23:30

PJM will be performing system maintenance in the Production environment on Wednesday, November 4, 2026, from 7:30 p.m. - 11:30 p.m. EPT (1930-2330 hours).

During this maintenance, there will be intermittent outages lasting up to 15 minutes. ​​

Impacted Tools

1. ExSchedule
2. OASIS​​​​​​

Maintenance to Gen Model and Queue Point in Prod. and Train on Nov. 5 from 10:00 a.m. - Noon EPT

11.5.2026 from 10:00 to 12:00

PJM will be performing system maintenance in the Production and Train environments

on Thursday, November 5, 2026, from 10:00 a.m. - Noon EPT (1000-1200 hours). During this maintenance, there will be an outage of up to 15 minutes.

Impacted Tool

1. Planning Center: Gen Model
2. Planning Center: Queue Point

Maintenance to NextGen in Prod. on Nov. 5 from 10:00 a.m. - Noon EPT

11.5.2026 from 10:00 to 12:00

PJM will be performing maintenance to NextGen in the Production environment on Thursday, November 5, 2026, from 10:00 a.m. - Noon EPT (1000-1200 hours).

During this maintenance, users may see page expiration errors and would need to log out and log back in to resolve.

Impacted Tool:

NextGen

Maintenance to Gen Model and Queue Point in Prod. and Train on Nov. 5 from 10:00 a.m. - Noon EPT

11.5.2026 from 10:00 to 12:00

PJM will be performing system maintenance in the Production and Train environments

on Thursday, November 5, 2026, from 10:00 a.m. - Noon EPT (1000-1200 hours). During this maintenance, there will be an outage of up to 15 minutes.

Impacted Tool

1. Planning Center: Gen Model
2. Planning Center: Queue Point

Maintenance to eDART Train and Production November 5, 2026, from 11:00 a.m. to 3:00 p.m. EPT

11.5.2026 from 11:00 to 15:00

PJM will perform maintenance to eDART in the Train and Production environments on Thursday, November 5, 2026, from 11:00 a.m. to 3:00 p.m. EPT (1100 to 1500).

During the release there will be intermittent outages of up to 10 minutes for certain portions of the eDART Train and Production systems and error messages may be generated.

Maintenance to eDART Train and Production November 5, 2026, from 11:00 a.m. to 3:00 p.m. EPT

11.5.2026 from 11:00 to 15:00

PJM will perform maintenance to eDART in the Train and Production environments on Thursday, November 5, 2026, from 11:00 a.m. to 3:00 p.m. EPT (1100 to 1500).

During the release there will be intermittent outages of up to 10 minutes for certain portions of the eDART Train and Production systems and error messages may be generated.

Maintenance to Various Tools in Prod. and Train on Nov. 5 from 4:00 p.m. - 7:00 p.m. EPT

11.5.2026 from 16:00 to 19:00

PJM will be performing system maintenance in the Production and Train environments on Thursday, November 5, 2026, from 4:00 p.m. - 7:00p.m. EPT (1600-1900 hours).

1. Cost Agent (Production only)
2. Data Viewer (Production only)
3. DER Directory
4. ELCC Calculator (Production only)
5. Messages
6. NextGen
7. PJM Tools home page
8. Queue Scope
9. Resource Tracker (Production only)

Maintenance to Various Tools in Prod. and Train on Nov. 5 from 4:00 p.m. - 7:00 p.m. EPT

11.5.2026 from 16:00 to 19:00

PJM will be performing system maintenance in the Production and Train environments on Thursday, November 5, 2026, from 4:00 p.m. - 7:00p.m. EPT (1600-1900 hours).

1. Cost Agent (Production only)
2. Data Viewer (Production only)
3. DER Directory
4. ELCC Calculator (Production only)
5. Messages
6. NextGen
7. PJM Tools home page
8. Queue Scope
9. Resource Tracker (Production only)

Network Maintenance May/Cause Outages to PJM tools in Prod. and Train on Nov. 5 from 6:30 p.m. - 11:59 p.m. EPT

11.5.2026 from 18:30 to 23:59

PJM will be performing network maintenance in the Production and Train environments on Thursday, November 5, 2026, from 6:30p.m. - 11:59 p.m. EPT (1830-2359hours).

During this maintenance, there will be intermittent outages of up to 5 minutes.

Impacted Tools

. Account Manager

. Billing Line Item Transfer

. Bulletin Board

. Capacity Exchange

. Cost Agent

. DER Directory

. DIMA

. DR Hub

. eCredit

. eDART

. eGADS

. Emergency Procedures

. ELCC Calculator

. ExSchedule

. FTR Center

. Gas Pipeline

. InSchedule

. Jetstream

. Maps

. Market Settlements Reporting System (MSRS)

. Market to Market

. Markets Gateway

. Member Community

. Membership Management Community

. Messages

. Model on Demand

. Network Changes

. NextGen

. OASIS

. PJM Connect

. PJM Tools home page

. Planning Center: Competitive Planner

. Planning Center: Gen Model

. Planning Center: Queue Point

. Planning Center: Queue Scope

. Planning Center: TC Planner

. Planning Center: TO Planner

. Planning Community

. Post Contingency Local Load Relief Warning

. Power Meter

. Queue Scope

. Resource Tracker

. Secure Share

. TO Connection

. Tools Security

. Voting

Additional Notes

. Data Viewer, PJM Now and PJM.com may have intermittent data delays during the maintenance time frame.

. Users won't be able to sign into Data Viewer and PJM.com during the maintenance time frame.