Active Messages

SubjectApplicationMessage DetailsStart Date of ChangeEnd Date of Change
Rescheduled: Maintenance to Capacity Exchange in Prod. and Train on April 21 from 2:00 p.m. - 4:00 p.m. EPT
  • Capacity Exchange
Tool or website outage
Users will be unable to access tool or website, Please share within your organization

Key Messages

. Share this communication internally within your organization to anyone who may need this information

. Users unable to sign into tool or website


The maintenance communication below has been rescheduled to Tuesday, April 21, 2026, from 2:00 p.m. - 4:00 p.m. EPT (1400 - 1600 hours).

****Previous Message****

​​​PJM will be performing system maintenance to Capacity Exchange in the Production and Train environments on Tuesday, April 14, 2026, from 1:00 p.m. - 3:00 p.m. EPT (1300 - 1500 hours). During this maintenance, there will be an outage of up to 1 hour.


Impacted Tool

. Capacity Exchange

4/21/2026 14:004/21/2026 16:00
Maintenance to Markets Gateway, Data Miner, SCED, and ASO in Prod. on April 22 from 2:50 p.m. - 5:00 p.m. EPT
  • Data Miner 2
  • Markets Gateway
Tool or website outage, Stale Data
Users will be unable to access tool or website, Please share within your organization

PJM will be performing system maintenance to Markets Gateway, Data Miner, Security Constrained Economic Dispatch (SCED), and Ancillary Services Optimizer (ASO) in the Production environment on Wednesday, April 22, 2026, from 2:50 p.m. - 5:00 p.m. EPT (1450 - 1700 hours).

During this maintenance, there will be an outage of up to 30 minutes.

Stale data will appear on Data Miner, PJM Now, Data Viewer and PJM.com.

PJM may utilize manual economic dispatch for generation control.

​​​​​​​Impacted Tools

-Markets Gateway

-Data Miner

-Security Constrained Economic Dispatch (SCED)

-Ancillary Services Optimizer (ASO)


4/22/2026 14:504/22/2026 17:00
Maintenance to NextGen in Prod. and Train on April 23 from 10:00 a.m. - Noon EPT
  • NextGen
Re-login
Please share within your organization

Share this communication internally within your organization to anyone who may need this information.​​​​​​

PJM will be performing maintenance to NextGen in the Production and Train environments on Thursday, April 23, 2026, from 10:00 a.m. - Noon EPT (1000 - 1200 hours).

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

Impacted Tool:

NextGen

4/23/2026 10:004/23/2026 12:00
Maintenance to eCredit in Prod. and Train on April 23 from 2:00 p.m. - 4:00 p.m. EPT
  • eCredit
Tool or website outage
Users will be unable to access tool or website, Please share within your organization

Share this communication internally within your organization to anyone who may need this information

Users unable to sign into eCredit

PJM will be performing system maintenance in the Production and Train environments on Thursday, April 23, 2026, from 2:00 p.m. - 4:00 p.m. EPT (1400 - 1600 hours).

During this maintenance, there will be an outage of up to 10 minutes.

Impacted Tool:

eCredit

4/23/2026 14:004/23/2026 16:00
Hudson Scheduling Restriction
  • ExSchedule
  • OASIS

Hudson Scheduling Restriction:

The Hudson path is restricted to 200 MWs from April 18, 2026 00:15 until May 4, 2026 00:00 due to Con-Ed switching at West 49th St.



4/20/2026 00:005/4/2026 00:00
Formula Rate Data Submission Reminder: June 2026
  • Planning Center - TC Planner
Please share within your organization

As June approaches, some TOs will submit formula rate filings for rate year June 2026 - May 2027. Please remember to add your June 2026 - May 2027 Formula Rate Data into TC Planner by May 15, 2026. This is critical for TC Planner to function well. Application background, action items 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.

- 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.

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

  1. Add both planning and settlement formula rate data (June 2026 - May 2027) into TC Planner for your company by May 15, 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.
4/13/2026 00:006/30/2026 23:59
Increased Reserve Requirements
  • Markets Gateway
  • Messages
No action required/information only, Please share within your organization

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.

1/8/2026 00:0012/31/2026 00:00