PJM Interconnection Issues Hot Weather Alert For June 5-6 In Mid-Atlantic, Southern Regions, 2nd Alert In 16 Days

On June 3, the PJM Interconnection issued a Hot Weather Alert for June 5-6 in its Mid-Atlantic and Southern Regions ahead of expected 90-degree weather, the second Alert in 16 days.

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.

Pennsylvania utilities included in the Alert area include: Met-Ed, Penelec, PECO Energy and. PPL Electric.

Temperatures are expected to reach and exceed 90 degrees, driving increased electricity demand.

As of 1 p.m. on June 3, PJM is expecting to serve the following approximate peak loads on June 5  of 130,617 MW and on June 6 127,560 MW.

PJM’s planning for this summer includes unlikely but plausible scenarios of up to 169,100 MW of demand.

PJM’s all-time record summer peak load was recorded in 2006 at 165,563 MW.

This is the second Hot Weather Alert of the summer, the first was on May 18 to 20.  Read more here.

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.

Resource Link:

-- PJM Interconnection Prepared To Meet Summer Peak Energy Demands With Adequate Resources Under Expected Conditions [PaEN]

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[Posted: June 3, 2026]  PA Environment Digest