Active Messages

SubjectApplicationMessage DetailsStart Date of ChangeEnd Date of Change
Maintenance to eDART in Prod. on April 27 from 6:00 p.m. - 1:00 a.m. EPT
  • eDART
Tool or website outage
Please share within your organization

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

PJM will be performing system maintenance to eDART in the Production environment on Monday, April 27, 2026, from 6:00 p.m. - 1:00 a.m. EPT (1800-0100 hours). During this maintenance, there will be intermittent outages of up to 2 hours.

Impacted Tool

eDART

4/27/2026 18:004/28/2026 01:00
Maintenance to DER Directory and Gas Pipeline in Prod. and Train on April 28 from 10:00 a.m. - Noon EPT
  • DER Directory
  • Gas Pipeline
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 tool or website

PJM will be performing system maintenance in the Production and Train environments on Tuesday, April 28, 2026, from 10:00 a.m. - Noon EPT (1000-1200 hours). During this maintenance, there will be an outage of up to 10 minutes.

Impacted Tools

  1. DER Directory
  2. Gas Pipeline
4/28/2026 10:004/28/2026 12:00
Neptune Scheduling Restriction
  • ExSchedule
  • OASIS

The Linden path is restricted to 375MWs starting April 27, 2026 09:05 due to equipment limitations. Restoration is estimated to be completed by 15:00 on May 1, 2026.

4/27/2026 00:055/1/2026 15:00
Maintenance to Gen Model and Queue Point in Prod. and Train on April 30 from 9:30 a.m. - 10:30 a.m. EPT
  • Planning Center - Queue Point and Gen Model
Tool or website outage
Users will be unable to access tool or website, Please share within your organization

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

on Thursday, April 30, 2026, from 9:30 a.m. - 10:30 a.m. EPT (0930-1030 hours). During this maintenance, there will be an outage of up to 15 minutes.

Impacted Tool

Planning Center: Gen Model

Planning Center: Queue Point

4/30/2026 09:304/30/2026 10:30
Maintenance to Cost Agent in Prod. on April 30 from 1:00 p.m. - 3:00 p.m. EPT
  • Cost Agent
Tool or website outage
Users will be unable to access tool or website, Please share within your organization

PJM will perform system maintenance in the Production environment on Thursday, April 30, 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 30 minutes.

Impacted Tool

Cost Agent

4/30/2026 13:004/30/2026 15:00
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