Active Messages

SubjectApplicationMessage DetailsStart Date of ChangeEnd Date of Change
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
Maintenance to Bulletin Board in Prod. on Dec. 30 from 1:00 p.m. - 2:00 p.m. EPT
  • Bulletin Board
Please share within your organization

PJM will perform maintenance to Bulletin Board in the Production environment on Tuesday, December 30, 2025, from 1:00 p.m. - 2:00 p.m. EPT (1300 - 1400 hours). During this maintenance, no service interruption is expected. In the unlikely event of an issue, any impact would be under 10 minutes.

12/30/2025 13:0012/30/2025 14:00
Updated Mid-Atlantic Dominion Subzone Bus and Resource List
  • Markets Gateway
  • Messages
No action required/information only, Please share within your organization

Updated versions of the Mid-Atlantic - Dominion Subzone Bus and Resource Lists have been published to the Data Miner 2 tool at dataminer2.pjm.com.

The Bus list may be found under Reference Data > Reserve Subzone Buses, and the Resource list may be found under Reference Data > Reserve Subzone Resources. The respective pages list the buses and resources that are located in the Mid-Atlantic Dominion reserve subzone based on the current system topology.

Please review the content and be aware if your resources are listed and therefore located in the MAD reserve subzone. Resources that do not appear in the list may respond only to PJM's request for 100% Synchronized Reserve in the RTO zone. Resources that appear in the list may respond to PJMs request for 100% Synchronized Reserve in the MAD and RTO zones.

There are also links to these Data Miner 2 feeds on the Ancillary Services page of PJM.com, listed as 'Reserve Subzone Bus Mapping' and 'Reserve Subzone Resource Mapping'.

If you have any questions, please contact PJM's Member Relations or 610-666-8980.

12/19/2025 00:001/3/2026 00:00
Updated Synchronized Reserve Offer Cap Penalty
  • Markets Gateway
  • Messages

An updated version of the Synchronized Reserve Offer Cap Penalty spreadsheet with a new value effective January 2026 has been published to the pjm.com website. It may be found under pjm.com > Markets & Operations > Ancillary Services or at the following link: http://www.pjm.com/markets-and-operations/ancillary-services.aspx, under the Reserve Price Formation section. This file lists the average value of the Synchronized Reserve Penalty along with the effective date. As specified in Section 4.2.3 of Manual 11, Synchronized Reserve offer prices are capped at this value. Please review the content and verify that your resources have submitted daily and hourly Synchronized Reserve offer prices in Markets Gateway at or below the offer cap.

If you have any questions, please contact PJM's Member Relations or 610-666-8980.


1/1/2026 00:001/2/2026 00:00