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PJM will be performing system maintenance to Emergency Procedures in the Production environment on Tuesday, March 3, 2026, from 10:00 a.m. - Noon EPT (1000 - 1200 hours). During this maintenance, there will be an outage of up to 30 minutes.

The PJM FERC 881 eDART Production implementation will take place on Tuesday, March 3, at 6:00 p.m. and is expected to complete by Wednesday, March 4, at 2:00 a.m. EPT (1800 to 0200 hours). During this time window, eDART Production will not be available.

Additional updates will be provided through Pardot email notifications

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 Thursday, March 5, 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.

PJM will be performing system maintenance in the Production and Train environments on Friday, March 6, 2026, from 5:00 p.m. - 11:00 p.m. EPT (1700 - 2300 hours). During this maintenance, there will be an outage of up to 5 hours.

Per FERC Order 881, effective for market day 3/4 and forward the Day Ahead Market will use 881 forecast ratings.

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.