PJM has issued a Hot Weather Alert for the entire region PJM serves for July 14–17 ahead of expected 90-plus-degree weather.
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.
Forecasted Peaks
As of 10 a.m. on July 13, 2026, PJM is expecting to serve the following approximate peak loads from July 14 to 17:
| Date | Forecasted Peak Load |
| July 14 | 151,105 MW |
| July 15 | 162,699 MW |
| July 16 | 160,893 MW |
| July 17 | 154,942 MW |
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.
A dedicated team of operators uses sophisticated technology to balance supply and demand and direct the power grid 24/7 from PJM’s control rooms. They prepare multiple potential scenarios that could be impacted by weather, emergency conditions or equipment failure. They adjust resource output with changes in demand and ensure that no transmission lines or facilities are overloaded. The team also watches for unusual conditions and reacts to them to protect the electricity supply.
Read more about PJM’s emergency procedures and messages (PDF).