Active Messages

SubjectApplicationMessage DetailsStart Date of ChangeEnd Date of Change
Maintenance to PJM.com and Subsidiary Sites on Feb. 24 from 5:00 p.m. – 9:00 p.m. EPT
  • PJM.com and other subsidiary websites
Tool or website outage
Users will be unable to access tool or website, Please share within your organization

PJM will be performing system maintenance on Tuesday, February 24, 2026, from 5:00 p.m. - 9:00 p.m. EPT (1700-2100 hours).

During this maintenance, PJM.com and subsidiary sites will experience intermittent unavailability for approximately 30 minutes.

2/24/2026 17:002/24/2026 21:00
Maintenance to ELCC Calculator in Prod. on Feb. 25 from 10:00 a.m. - 3:00 p.m. EPT
  • ELCC Calculator
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 ELCC Calculator in the Production environment on Wednesday, February 25, 2026, from 10:00 a.m. - 3:00 p.m. EPT (1000 - 1500 hours). During this maintenance, there will be an outage of up to 5 minutes.

2/25/2026 10:002/25/2026 15:00
Maintenance to Markets Gateway, Data Miner, SCED, and ASO in Prod. on Feb. 25 from 2:50 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
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, February 25, 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.

2/25/2026 14:502/25/2026 17:00
Maintenance to Data Viewer and Gas Pipeline in Prod. on Feb. 25 from 5:00 p.m. - 7:00 p.m. EPT
  • Data Viewer
  • Gas Pipeline
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 environment on Wednesday, February 25, 2026, from 5:00 p.m. - 7:00 p.m. EPT (1700 - 1900 hours). During this maintenance, there will be an outage of up to 15 minutes.

2/25/2026 17:002/25/2026 19:00
LINVFT PJMVFTLD LOAD (1302423, 2/17-2/27) Emergency Outage
  • ExSchedule
  • OASIS

ATC on Linden VFT path is limited to 300MW due to emergency outage submitted vide eDART # 1302423 outage timeframe 02/17/2026 17:00 through 02/27/2026 15:00 as Linden VFT Unit #3 being derated to 90 MW due to excitation issues.



2/18/2026 10:062/27/2026 15:00
Maintenance to DR Hub in Prod. and Train on Feb. 26 from 3:00 p.m. - 5:00 p.m. EPT
  • DR Hub
Tool or website outage
Users will be unable to access tool or website, Please share within your organization

PJM will be performing a system maintenance to DR Hub in the Production and Train

environments on Thursday, February 26, 2026, 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.

2/26/2026 15:002/26/2026 17:00
Maintenance to Secure Share in Prod. on Feb. 26 from 4:00 p.m. - 7:00 p.m. EPT
  • PJM.com and other subsidiary websites
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 Secure Share in the Production environment on Thursday, February 26, 2026, from 4:00 p.m. - 7:00 p.m. EPT (1600 - 1900 hours). During this maintenance, there will be an outage of up to 1 hour.

2/26/2026 16:002/26/2026 19:00
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