Upcoming Changes

User Guide (PDF)

This page provides a list of planned outages to PJM tools, websites and apps, as well as delayed data or report deadlines.

Subscribe to this list via email on the My Emails Lists page or via the Web Service.

Items per page: 1 - 9 of 9

Date/Time of Change	Details	Duration of Impact
1.8.2026 - 12.31.2026 12:00 a.m. - 12:00 a.m.	Increased Reserve Requirements Tool/Website: Markets Gateway, Messages Impacts: Environment: Production Actions Required: No action required/information only, Please share within your organization Increased Reserve Requirements 1.8.2026 00:00 to 12.31.2026 00:00 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: 1,6301 + 190 = 1,820 MW Primary Reserve requirement: 1,6301.5 + 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: 1,6301.2 + 190 = 2,146 MW Primary Reserve requirement: 1,6301.2*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.
7.31.2026 12:00 p.m. - 12:05 p.m.	The EIT application window will open on 7/31/26 at 12pm EPT in NextGen. Tool/Website: NextGen Impacts: Environment: Production Actions Required: No action required/information only, Please share within your organization The EIT application window will open on 7/31/26 at 12pm EPT in NextGen. 7.31.2026 from 12:00 to 12:05 The Expedited Interconnection Track application window will open on 7/31/26 at 12pm EPT in NextGen.
8.12.2026 4:00 p.m. - 8:00 p.m.	Maintenance to Secure Share in Prod. on Aug 12 from 4:00 p.m. - 8:00 p.m. EPT Tool/Website: PJM.com and other subsidiary websites Impacts: Tool or website outage Environment: Production Actions Required: Please share within your organization, Users will be unable to access tool or website Maintenance to Secure Share in Prod. on Aug 12 from 4:00 p.m. - 8:00 p.m. EPT 8.12.2026 from 16:00 to 20:00 PJM will be performing system maintenance in the Production environment on Wednesday, August 12, 2026, from 4:00 p.m. - 8:00 p.m. EPT (1600-2000 hours). During this maintenance, there will be an outage of up to 1 hour. Impacted Tool Secure Share	Up to 1 Hour
8.12.2026 5:00 p.m. - 7:00 p.m.	Maintenance to DR Hub in Prod. and Train on Aug. 12 from 3:00 p.m. - 5:00 p.m. EPT Tool/Website: DR Hub Impacts: Tool or website outage Environment: Production Actions Required: Please share within your organization, Users will be unable to access tool or website Maintenance to DR Hub in Prod. and Train on Aug. 12 from 3:00 p.m. - 5:00 p.m. EPT 8.12.2026 from 17:00 to 19:00 PJM will be performing a system maintenance in the Production and Train environments on Wednesday, August 12, 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 per environment. Impacted tool: DR Hub	Up to 30 Minutes per Environment
8.12.2026 5:00 p.m. - 7:00 p.m.	Maintenance to DR Hub in Prod. and Train on Aug. 12 from 3:00 p.m. - 5:00 p.m. EPT Tool/Website: DR Hub Impacts: Tool or website outage Environment: Train Actions Required: Please share within your organization, Users will be unable to access tool or website Maintenance to DR Hub in Prod. and Train on Aug. 12 from 3:00 p.m. - 5:00 p.m. EPT 8.12.2026 from 17:00 to 19:00 PJM will be performing a system maintenance in the Production and Train environments on Wednesday, August 12, 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 per environment. Impacted tool: DR Hub	Up to 30 Minutes per Environment
8.13.2026 1:00 p.m. - 4:00 p.m.	Maintenance to OASIS in Prod. and Train on Aug. 13 from 1:00 p.m. - 4:00 p.m. EPT Tool/Website: OASIS Impacts: Tool or website outage Environment: Train Actions Required: Please share within your organization, Users will be unable to access tool or website Maintenance to OASIS in Prod. and Train on Aug. 13 from 1:00 p.m. - 4:00 p.m. EPT Today from 13:00 to 16:00 PJM will be performing system maintenance in the Production and Train environments on Thursday, August 13, 2026, from 1:00 p.m. - 4:00 p.m. EPT (1300-1600 hours). During this maintenance, there will be an outage of up to 15 minutes. Impacted Tool: OASIS	Up to 15 Minutes
8.13.2026 2:50 p.m. - 5:00 p.m.	Maintenance to Markets Gateway, Data Miner, SCED, and ASO in Prod. on Aug. 13 from 2:50 p.m. - 5:00 p.m. EPT Tool/Website: Data Miner 2, Data Viewer, Markets Gateway, PJM Now Impacts: Stale Data, Tool or website outage Environment: Production Actions Required: Please share within your organization, Users will be unable to access tool or website Maintenance to Markets Gateway, Data Miner, SCED, and ASO in Prod. on Aug. 13 from 2:50 p.m. - 5:00 p.m. EPT Today from 14:50 to 17:00 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, August 13, 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. Impacted Tools Markets Gateway Data Miner Security Constrained Economic Dispatch (SCED) Ancillary Services Optimizer (ASO)	Up to 30 Minutes
8.13.2026 5:00 p.m. - 7:00 p.m.	Maintenance to Various Tools in Prod. and Train on Aug. 13 from 5:00 p.m. - 7:00 p.m. EPT Tool/Website: Cost Agent, DER Directory, ELCC Calculator, Messages, NextGen, PJM Tools Home Page, Planning Center - Queue Scope, Resource Tracker Impacts: Tool or website outage Environment: Production Actions Required: Please share within your organization, Users will be unable to access tool or website Maintenance to Various Tools in Prod. and Train on Aug. 13 from 5:00 p.m. - 7:00 p.m. EPT Today from 17:00 to 19:00 PJM will be performing system maintenance in the Production and Train environments on Thursday, August 13, 2026, from 5:00 p.m. - 7:00p.m. EPT (1700-1900 hours). During this maintenance, there will be an outage of up to 5 minutes. Impacted Tools: Cost Agent (Production only) DER Directory ELCC Calculator (Production only) Messages NextGen PJM Tools home page Queue Scope Resource Tracker (Production only)	Up to 5 Minutes
8.13.2026 5:00 p.m. - 7:00 p.m.	Maintenance to Various Tools in Prod. and Train on Aug. 13 from 5:00 p.m. - 7:00 p.m. EPT Tool/Website: DER Directory, Messages, NextGen, PJM Tools Home Page, Planning Center - Queue Scope Impacts: Tool or website outage Environment: Train Actions Required: Please share within your organization, Users will be unable to access tool or website Maintenance to Various Tools in Prod. and Train on Aug. 13 from 5:00 p.m. - 7:00 p.m. EPT Today from 17:00 to 19:00 PJM will be performing system maintenance in the Production and Train environments on Thursday, August 13, 2026, from 5:00 p.m. - 7:00p.m. EPT (1700-1900 hours). During this maintenance, there will be an outage of up to 5 minutes. Impacted Tools: DER Directory Messages NextGen PJM Tools home page Queue Scope	Up to 5 Minutes

Items per page: 1 - 9 of 9

Upcoming Changes

Increased Reserve Requirements

1.8.2026 00:00 to 12.31.2026 00:00

The EIT application window will open on 7/31/26 at 12pm EPT in NextGen.

7.31.2026 from 12:00 to 12:05

Maintenance to Secure Share in Prod. on Aug 12 from 4:00 p.m. - 8:00 p.m. EPT

8.12.2026 from 16:00 to 20:00

Maintenance to DR Hub in Prod. and Train on Aug. 12 from 3:00 p.m. - 5:00 p.m. EPT

8.12.2026 from 17:00 to 19:00

Maintenance to DR Hub in Prod. and Train on Aug. 12 from 3:00 p.m. - 5:00 p.m. EPT

8.12.2026 from 17:00 to 19:00

Maintenance to OASIS in Prod. and Train on Aug. 13 from 1:00 p.m. - 4:00 p.m. EPT

Today from 13:00 to 16:00

Maintenance to Markets Gateway, Data Miner, SCED, and ASO in Prod. on Aug. 13 from 2:50 p.m. - 5:00 p.m. EPT

Today from 14:50 to 17:00

Maintenance to Various Tools in Prod. and Train on Aug. 13 from 5:00 p.m. - 7:00 p.m. EPT

Today from 17:00 to 19:00

Maintenance to Various Tools in Prod. and Train on Aug. 13 from 5:00 p.m. - 7:00 p.m. EPT

Today from 17:00 to 19:00

Maintenance Details