A Hot Weather Alert is an established 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. High temperatures are expected to reach into the 90s this week.
This procedure does not require any action from customers.
This is the sixth Hot Weather Alert of the summer. The others were issued for May 18-20, June 5-6, June 11-12, June 18, June 29 to July 5.
New Record Peak
PJM said during a recent prolonged heat wave, PJM reached an all-time peak load estimated at 168,158 MW on July 2, according to preliminary figures that factor in demand response programs that serve to suppress electricity demand. PJM’s previous peak record was 165,563 MW, set on Aug. 2, 2006.
Forecasted Peaks This Week
As of 10 a.m. on July 13, 2026, PJM is expecting to serve the following approximate peak loads from July 14 to 17--
July 14 - 151,105 MW
July 15 - 162,699 MW
July 16 - 160,893 MW
July 17 - 154,942 MW
Click Here for the PJM announcement.
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.
Resource Links:
-- Budget First Look: At Best A Cost-To-Carry Environmental Budget, Supports Oil & Gas Program Operations, Several Data Center Provisions But Not A Moratorium Or Pause [PaEN]
-- A.I. Data Center Legislative Scorecard: Pennsylvania Failed To Finalize Meaningful Legislation On Energy Affordability, To Increase Electric Generation And Give Communities The Tools They Need To Cope With A.I. Proposals [PaEN]
-- Environmental/Energy Groups: Final State Budget Fails To Address Critical A.I. Data Center Issues And Skyrocketing Energy Bills [PaEN]
[Posted: July 13, 2026] PA Environment Digest
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