Active Messages

SubjectApplicationMessage DetailsStart Date of ChangeEnd Date of Change
Maintenance to Voting in Prod. and Train on Dec. 1 from 4:00 p.m. - 6:00 p.m. EPT
  • Voting
Tool or website outage
Users will be unable to access tool or website, Please share within your organization

PJM will be performing system maintenance to Voting in the Production and Train environments on Monday, December 1, from 4:00 p.m. - 6:00 p.m. EPT (1600-1800 hours). During this maintenance, there will be an outage of up to 5 minutes.

12/1/2025 16:0012/1/2025 18:00
Maintenance to Markets Gateway and Data Miner in Prod. on Dec. 2 from 3:00 p.m. - 5:00 p.m. EPT
  • Data Miner 2
  • Data Viewer
  • Markets Gateway
  • PJM Now
  • PJM.com and other subsidiary websites
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 and Data Miner in the Production environment on Tuesday, December 2, from 3:00 p.m. - 5:00 p.m. EPT (1500 - 1700 hours). During this maintenance, there will be an outage of up to 30 minutes.

Stale data will appear on Data Miner, PJM Now, LMP postings on Data Viewer, and on the Markets and Operations page of PJM.com.

12/2/2025 15:0012/2/2025 17:00
PJM.com System Maintenance on Dec. 2 from 5:00 p.m. – 7:00 p.m. EPT
  • PJM.com and other subsidiary websites
Please share within your organization

PJM.com will be performing system maintenance on Tuesday, December 2, 2025, from 5:00 p.m. - 7:00 p.m. EPT (1700-1900 hours). During this maintenance, intermittent website outages may occur.

12/2/2025 17:0012/2/2025 19:00
Rescheduled to Dec. 3: Maintenance to Markets Gateway and Stale Data in Prod. from 3:00 p.m. - 6:00 p.m. EPT
  • Data Miner 2
  • Data Viewer
  • Markets Gateway
  • PJM Now
  • PJM.com and other subsidiary websites
Tool or website outage, Stale Data
Users will be unable to access tool or website, Please share within your organization

The maintenance communicated below has been rescheduled to Wednesday, December 3, from 3:00 p.m. - 6:00 p.m. EPT (1500 - 1800 hours). During this maintenance, there will be an outage of up to 30 minutes.

Stale data will appear on Data Miner, PJM Now, and LMP postings on Data Viewer and on the Markets and Operations page of PJM.com.

****Previous Message****

PJM will be performing system maintenance to Markets Gateway in the Production environment on Wednesday, November 19, from 3:00 p.m. - 6:00 p.m. EPT (1500 - 1800 hours). During this maintenance, there will be an outage of up to 30 minutes.

12/3/2025 15:0012/3/2025 18:00
Maintenance to Queue Scope in Prod. and Train on Dec. 3 from 4:00 p.m. - 9:00 p.m. EPT
  • Planning Center - Queue Scope
Tool or website outage
Users will be unable to access tool or website, Please share within your organization

PJM will be performing system maintenance to Queue Scope in the Production and Train environments on Wednesday, December 3, 2025 from 4:00 p.m. - 9:00 p.m. (1600-2100 hours). During this maintenance, there will be an outage of up to 2 hours.

12/3/2025 16:0012/3/2025 21:00
Synch Reserve Offer Cap Calculation Error
  • Markets Gateway
  • Messages
No action required/information only, Please share within your organization

PJM has discovered an error in the calculation of the Synchronized Reserve Offer cap for 2025. PJM has corrected this error.

Effective 11/26/2025 and for the remainder of 2025, the Synchronized Reserve Offer cap is $0.08/MW.

The details of the calculation can be found posted here.

Please note that this value will be updated again for 2026 and posted by December 15.

If you have any questions regarding this communication, please contact PJM's Member Relations at custsvc@pjm.com or (610) 666-8980.

11/26/2025 00:0012/15/2025 00:00
Increased Reserve Requirements
  • Markets Gateway
  • Messages
No action required/information only

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 will carry 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 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 30%

Synchronized Reserve requirement: 1,630*1.3 + 190 = 2,309 MW

Primary Reserve requirement: 1,630*1.3*1.5 + 190 = 3,369 MW

30-Minute Reserve requirement: Max(3,000, gas contingency, PR reliability) + 190 = 3179 + 190 = 3,369 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.


5/19/2023 00:0012/31/2025 00:00
January 2026 Formula Rate Data Submission - Due Nov 14 2025
  • Planning Center - TC Planner
Please share within your organization

Key messages:

As the year ends, some TOs will submit formula rate filings for rate year January 2026 – December 2026. Please remember to add your January 2026 – December 2026 Formula Rate Data into TC Planner by November 14, 2025. 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:

  • 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
  • Add both planning and settlement formula rate data (January 2026 – December 2026) into TC Planner for your company by November 14, 2025

Materials & Support:

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

Sometimes PJM security rewrites the URLs sent via email to point to url defense and messages.pjm.com might not allow you to post it please replace the URL with below correct URLs in key messages text area if they are rewritten in email.

tcplanner-take-a-tour URL : https://www.pjm.com/-/media/DotCom/etools/planning-center/tc-planner-take-a-tour.pdf

available materials : https://www.pjm.com/markets-and-operations/etools/planning-center

10/8/2025 00:0011/14/2025 23:59
Change of Reserve Transfer Interface
  • Markets Gateway
  • Messages
No action required/information only, Please share within your organization

To accommodate system conditions, PJM has changed the reserve transfer interface modeling from AP SOUTH to BED-BLA effective 11/18/2025 15:00 EPT until further notice. If you have any questions, please contact PJM's Member Relations at 610-666-8980.

11/18/2025 15:001/1/2026 00:00