The PJM load forecast is estimated at about 94,573 MW against expected generation capacity availability of about 110,000 MW, about 60% of its generation capacity of about 182,000 MW.
PJM said about 72,000 MW of generation and some transmission facilities will not be available to meet demand due to maintenance and construction outages.
[In addition to these expected outages, there can also be unexpected outages like those that occurred during the October 13-14 Capacity Advisory.]
During the October 13-14 Capacity Advisory about 61,000 MW of electric generation was unavailable to respond to energy demands as a result of maintenance and unexpected outages.
About 15,000 MW of these outages were unexpected power plant outages.
PJM said it had 66% of its generation capacity available to meet the October 13-14 energy demands. Read more here.
In a statement of October 15, PJM said-- “Most of the new, rapidly growing energy demand is from data centers and other energy-intensive Large Load customers, and their consumption does not fluctuate significantly with the weather; it is a 12-month 24/7 phenomenon.
“The result is that periods the grid once relied on for maintenance and preparation can now become periods of significant system stress and reliability risk.”
PJM said-- the Oct. 19 Capacity Advisory follows a week of unseasonably warm fall conditions, during which PJM proactively implemented procedures to reliably serve increased electricity demand amid planned seasonal equipment outages required for maintenance and construction.
The advisory was issued to provide advance notice that capacity is tightening and additional actions may be required, such as recalling generation outages, rescheduling generation outages, calling generation out of market, recalling transmission outages to maximize generation deliverability, and/or notifying neighbors to anticipate less reliance on imports from PJM.
A Capacity Advisory is a new Emergency Procedure endorsed by PJM Members in June. It was created specifically for circumstances when projected grid operating conditions indicate an approaching capacity shortfall.
Click Here to read the advisory.
The PJM Interconnection coordinates the wholesale electricity grid and markets for all or parts of 13 states—Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, and West Virginia—plus the District of Columbia.
Related Articles This Week:
-- PUC Invites Comments On Regulations To Give Electric Utilities New Tools To Manage Data Centers During Emergency Periods Of Strained Electricity Supplies And Curtailments To Maintain Grid Reliability [PaEN]
-- PJM Issues Electric Power Capacity Advisory For Oct. 19 As A Result Of About 72,000 MW Of Planned Generation Outages; About 60% Of Generating Capacity Is Available To Meet Demand [PaEN]
-- PJM Reports Operating With Only 66% Of Its Generation Capacity Available During Recent Maximum Generation Alerts; About One-Third Of The Power Plant Outages Were Unexpected [PaEN]
-- PJM Extends Maximum Generation Alert To Oct. 14 Due To Unusually Warm Weather, Equipment Outages; Calls On Demand Response To Reduce Power Load [PaEN]
-- PA Capital-Star: PJM Interconnection Issues Alerts Warning Of Tight Electricity Supplies
-- PJM Issues Maximum Generation Alert For Oct. 13 Due To Unusually Warm Weather, Equipment Outages; Received DOE Order To Switch Data Centers To Backup Generation, If Needed [PaEN]
-- Gov. Shapiro Files Petition To Intervene In PPL Electric Rate Case To Protect Customers From Costs And Reliability Risks From A.I. Data Centers [PaEN]
-- In Case You Missed It: A.I./Data Center Articles - NewClips From Last Week - October 19 [PaEN]
Public Participation:
-- DEP To Hold Public Meeting/Hearing Nov. 23 On Chapter 105 Permit For CDE Acquisitions LLC Project Atlas A.I. Data Center Complex In Lehigh County [PaEN]
-- DEP Invites Comments On Individual Stormwater Permit For The CDE Acquisitions LLC Project Atlas A.I. Data Center Complex In Lehigh County [PaEN]
-- DEP Sets Nov. 20 Hearing On Stormwater Permit For PPL Stanton Summit Transmission Line Rebuild In Lackawanna County [PaEN]
-- PUC Schedules Nov. 17, 18 Hearings On Acquisition Of UGI - Electric By Argo Infrastructure Partners [PaEN]
-- PennLive/LehighValleyLive: $10,000/Household Didn’t Work, Developer Of Project Hazelnut A.I. Data Center To Hold Oct. 22 Open House To Talk About What’s Next In Luzerne County
NewsClips:
-- PA Capital-Star: PJM Interconnection Issues Alerts Warning Of Tight Electricity Supplies
-- Altoona Mirror - Robert Swift: PUC/Team PA Report Identifies 21 Possible Sites For A.I. Data Center Power Plants
-- PA Capital-Star: PUC/Team PA Study Identifies 21 Potential Sites For A.I. Data Center Power Plants
-- Williamsport Sun: PUC Study Searches For Power Plant Sites To Be Reactivated For Data Centers, Looks At Lock Haven
-- Axios-Pittsburgh: Report: Pennsylvania Natural Gas Power Generation To Grow 15% By 2030 Due To A.I. Data Center Demand
-- PennLive/LehighValleyLive: A.I. Data Centers Have A Shelf Life, Who Pays For Cleanup In PA When They Close Years From Now?
-- Republican Herald: PPL Plans High-Voltage Electric Line Leading To Amazon Data Center In Hazleton Area, Luzerne County
-- Utility Dive: Federal Energy Regulatory Commission Rejects Most Of PJM’s ‘Bring Your Own Power’ Data Center Load Plan Saying It Intrudes On State Jurisdiction, May Be Discriminatory [FERC Rejected PJM’s Backstop Energy Plan Earlier]
-- The Allegheny Front: FERC Denies Plan That Would Shield Energy Customers From A.I. Data Center Demand To Avoid Blackouts
-- Utility Dive: FERC Proposes Further Easing Regulatory Approvals For Natural Gas Pipeline, LNG Export Projects
-- Wall Street Journal: ‘Phantom’ A.I. Data Centers Are Demanding More From The Power Grid Than They Need Leading To Higher Electricity Rates
-- AP: US Is Reviving Shuttered Nuclear Power Plants To Meet Growing A.I. .Data Center Electricity Demand [Includes Three Mile Island]
[Posted: October 18, 2026]
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