PJM Interconnection Issues Maximum Generation And Load Management Alerts For July 24

On July 23, the PJM Interconnection issued a Maximum Generation Alert and Load Management Alert for July 24 across its footprint to ensure the reliable delivery of electricity for customers in 13 states, including Pennsylvania, and the District of Columbia. 

This alert does not require any action from customers.

Earlier today PJM expanded its Hot Weather Alert to its entire service area on July 24 ahead of expected hot weather.

PJM is issuing the Maximum Generation Alert mainly to notify neighboring systems that electricity exports from PJM may be curtailed on July 24. The alert serves as a procedural step that allows those neighboring regions affected to plan accordingly.

The alert is also targeted at transmission/generation owners, who then determine if any maintenance or testing on equipment can be deferred or canceled. By deferring maintenance, the units stay online and continue to produce energy that is needed.

PJM issues this alert at the same time as a Load Management Alert, which gives advance notification that load management action may be declared, including non-Emergency and Emergency Demand Response. Demand Response programs pay customers in advance who sign up to allow reduction of their electricity use in emergencies.

A Hot Weather Alert is in place for July 23 in the PJM Western Region including the service territories for Duquesne Light, West Penn Power and Penn Power in Pennsylvania.

A Hot Weather Alert is a routine procedure PJM issues ahead of forecasted 90-plus-degree weather and/or high humidity to prepare transmission and generation personnel and facilities for expected increases in electricity demand, or load.

As of 1:30 p.m. July 23, PJM expects to serve a load of over 151,000 MW on July 24.

PJM’s record summer peak is 165,563 MW, set in 2006. On June 24 this summer, PJM served a preliminary peak of over 162,000 MW, the third-highest peak load in its history.

PJM has approximately 179,200 MW of generation capacity this summer, as well as approximately 7,900 MW of contracted demand response. Demand response programs pay customers in advance to have their electricity use automatically reduced in times of system stress.

Click Here for the PJM July 24 announcement.

PJM previously issued Hot Weather Alerts between June 18 and 26-- and Maximum Generation Alerts between June 23 and 25-- and Hot Weather Alerts and Maximum Generation Alerts on July 15 and 16.

Visit the PJM Interconnection website for more information.  PJM manages the electric grid across 13 states-- including Pennsylvania-- and the District of Columbia.

Related Articles This Week:

-- Guest Essay: Rewriting The Energy Story — Together - By Stephen M. DeFrank, Chairman, Pennsylvania Public Utility Commission  [PaEN] 

-- PJM Electricity Capacity Auction Bids For 134,311 MW Come It At Highest Price Allowed Under FERC-Approved Cap  [PaEN]  

-- What The A.I. Data Center & Energy Summit Missed: Exploding Electricity Demand Already Raising Prices - Ratepayers Need Protection; No Longer An ‘All Of The Above’ Energy Strategy [PaEN]

-- What The A.I. Data Center & Energy Summit Missed: It’s Deja Vu - False Promises, Dirty Power - Our People And Communities Deserve Respect  [PaEN] 

-- PJM Interconnection Extends Hot Weather Alert To July 24 And To Entire Service Area  [PaEN] 

-- July 31 Webinar - Why Is My Electricity Bill So High?  PJM Decisions Have Driven Up The Cost Of Electricity  [PaEN] 

-- PUC: Pennsylvania Doubles Solar Power Generation In Just 17 Months To 2 Gigawatts  [PaEN] 

-- Registration Open! Penn State University To Host 5th Annual Online Solar Law Symposium Aug. 21  [PaEN]  

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-- PUC Safety Division Continues Examination Of June Fatal Rowhouse Explosion In Philadelphia Focused On Natural Gas Utility Infrastructure [PaEN] 

NewsClips:

-- Post-Gazette: PJM Says Settlement Of Complaint Filed By Shapiro Tamped Down Electricity Auction Prices [$380.57 vs. cap of $329.17]

-- WHYY - Sophia Schmidt: PJM Grid Operator Auction Will Result In Higher Electricity Bills For PA, NJ, DE Customers

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-- Gov. Shapiro: Legal Action Against PJM Saved PA Consumers An Estimated $1.6 Billion

-- Utility Dive: PJM Capacity Prices Set Another Record With 22% Jump; Without Market Cap They Would Be 18% Higher

-- Bloomberg: A.I. Data Center Boom Leads To Record Costs On US Grid; Businesses, Households In PJM Grid Will Spend A Record $16.1 Billion To Ensure Electricity Supplies

-- Reuters: Biggest US Power Grid [PJM] Auction Raises Prices By 22% To New Heights 

-- Inside Climate News: Are You A Customer Of PJM?  Its Capacity Auction Will Affect Your Electricity Prices In 2026

-- Bloomberg: Biggest US Power Sale [PJM] To Offer Glimpse Of A.I.’s Cost To Consumers [Results To Be Announced July 22 at 4:00 p.m.]   [PDF of Article]

-- Reuters: Rush For Natural Gas Power Plants Drives Up Costs, Increases Delivery Times For Turbines, Other Components 3 to 5 Years 

-- Utility Dive Guest Essay: Openings For CEO And On PJM’s Board Are An Opportunity To Chart A New Course - By David Lapp, Maryland Office Of People’s Counsel advocating for residential utility consumers 

-- Citizens Voice: Debate Over Rumored A.I. Data Center Draws Large Crowd In Dorrance Twp., Luzerne County

-- PennLive: Owners Of Idled Steelton Steel Mill Raise The Potential Of The Site Becoming A.I. Data Center In Dauphin County

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-- LancasterOnline: Work Already Underway On 450,000 Sq. Foot A.I. Data Center Inside A Vacant Printing Plant; Officials Say It Won’t Affect Water, Electrical Grid

-- PennLive: Controversial A.I. Data Centers Set For Big Expansion In PA, Some Ask, At What Cost?

-- WESA - Rachel McDevitt: Many Projects Credited To A.I. & Energy Summit Were Already Underway

-- PA Capital-Star: Energy And Tech Companies Said They’re Investing $90 Billion In PA, Fossil Fuel Projects Make Up Largest Category 

-- Post-Gazette Guest Essay: Environmentalists Don’t Want To Talk About Energy, A.I. Policy - By Jeff Nobers, Pittsburgh Works  [They weren’t invited to invitation only McCormick Summit] 

-- Pittsburgh Works: Environmentalists Against Respectful Civic Discussion Of Energy, A.I. Policy  [They weren’t invited to invitation only McCormick Energy A.I. Summit]

-- TribLive Guest Essay: Local Action Can Protect Allegheny County From Rising Energy Costs Caused By President’s  Budget Bill - By Gregory Bernarding, Pittsburgh Regional Building Trades, & Jeanneen Zappa, Keystone Energy Efficiency Alliance  

-- WESA - Rachel McDevitt: Solar For All Program At Risk In PA If State Lawmakers Don’t Act Soon 

-- MCall: How Federal Megabill Will Impact Green Energy Investments In Lehigh Valley 

-- Penn State Extension: Geothermal Energy And Agriculture In Pennsylvania 

-- Financial Times: ‘Net Zero’ Emissions Standard Paused As Shell Quits

-- Reading Eagle: Frequent Met-Ed Power Outages In Southeastern Berks Called Into Question

-- Utility Dive: A.I.- Powered Attacks On Computer Systems Rise, Now Outrank Other Risks For Information Security Officers 

[Posted: July 23, 2025]  PA Environment Digest