Pennsylvania utilities included in the Alert area are: Met-Ed, Penelec, PECO Energy and PPL Electric.
Previous Hot Weather Alerts were issued for May 18 to 20, June 5-6 and June 11-12.
A Hot Weather Alert is a routine procedure PJM issues ahead of forecasted hot weather and/or high humidity to prepare transmission and generation personnel and facilities for expected increases in electricity demand, or load.
This procedure does not require any action from customers.
Temperatures are expected to reach and exceed 90 degrees, driving increased electricity demand.
Forecasted Peaks
As of 1 p.m. on June 17, PJM is expecting to serve a forecasted peak load of 129,750 MW on June 18.
This forecast is subject to change.
PJM’s planning for this summer includes unlikely but plausible scenarios of up to 169,100 MW of demand. Read more here.
PJM’s all-time record summer peak load was recorded in 2006 at 165,563 MW.
Click Here for the PJM announcement.
The PJM Interconnection operates the electric grid in 13 states and the District of Columbia. The states include Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia and West Virginia.
Related Articles This Week:
-- In Case You Missed It: A.I./Data Center Articles - NewClips From Last Week - June 22 [PaEN]
-- House Committees OK Bills To Add Energy Storage To Grid To Improve Reliability; Add Conditions For Receiving State Data Center Tax Credit; Speed Connection Of Clean Energy Generation To Grid To Help Reduce Energy Costs; Other Bills [PaEN]
-- PJM Interconnection Issues 4th Hot Weather Alert Of Season For June 18 In Mid-Atlantic, Southern Regions [PaEN]
-- DEP Citizens Advisory Council Meets June 23 To Hear Presentation On Carbon Capture; Discuss Comments On DEP Act 54 Report On Damage Caused By Underground Coal Mining; Air Quality Regulations [PaEN]
-- First United Presbyterian Church Of Crafton Heights In Pittsburgh Cut Energy Bills By More Than 2/3, Now Invests More In People, The Community [PaEN]
-- PennDOT Now Accepting Applications For National Electric Vehicle Infrastructure Grants In Western And Southeast PA; June 25 Webinar For Western Applicants [PaEN]
-- Allegheny County To Host June 24 Virtual Meeting Inviting Public Input On The County's First-Ever Climate Action Plan [PaEN]
-- PennEnvironment Offers A.I. Data Center Resources: True Costs Of Data Centers To The Environment, Consumers; Impacts Of Dirty Backup Generators; Slowing Transition To Clean Energy [PaEN]
NewsClips:
-- PennLive: As PA Data Center Development Surges, PA House Fast-Tracks Bills To Address It [Not Senate]
-- Legislation To Codify Gov. Shapiro’s GRID Data Center Standards Into Law Introduced In PA House [House Bill 2650]
-- PA Capital-Star/The Conversation: How PA Towns Are Protecting Themselves From The Noise, Heat And Utility Costs Of A.I. Data Centers
-- Pittsburgh Business Times: Eos Energy Energy Storage Company Starts Production At 2nd Facility In Pittsburgh Area
-- The Center Square: PA’s Energy Future A Defining Issue In Gubernatorial Race
-- The Guardian: How The Fight Over US A.I. Data Centers Is Scrambling Pennsylvania’s Politics: ‘We Don’t Want It’
-- Centre Daily Times Column: Climate Watch - Energy Concerns Now Focus For State Lawmakers
-- The Center Square: Republican Senators Ward, Yaw Say State Losing Out Because Of Shapiro-Backed Price Caps On Electricity Prices [But Yaw Asked FERC In March To Require PJM To Keep Charging PA Ratepayers The Same Record High Rates ] [Warning]
-- TribLive: Assistance Available As Electric Bill Costs Rise Faster Than Inflation Rate
-- Inside Climate News: President’s Administration Abandons Fight Against Wind Energy As Much Needed Clean Energy Output Surges
[Posted: June 17, 2026] PA Environment Digest

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