Update: Hot Weather Alert for Mid-Atlantic Region Extended to July 30

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July 29 Update

PJM has extended its Hot Weather Alert for its Mid-Atlantic region through July 30 amid continued hot weather.

Hot Weather Alerts are issued when temperatures are expected to exceed 90 degrees Fahrenheit (93 degrees in some areas) with high humidity, driving up demand for electricity. High temperatures are expected to remain in the 90s for much of the week.

The Mid-Atlantic region includes the Atlantic City Electric, Baltimore Gas & Electric, Delmarva Power, Jersey Central Power & Light, Met-Ed, Penelec, PECO, PEPCO, PPL Electric Utilities, PSE&G, and Orange & Rockland: Rockland Electric Company transmission zones.

Track PJM’s markets and operations in real time on the Markets and Operations page on PJM.com or through the PJM Now app for iPhone and Android. Learn more about how PJM prepares for summer operations on the Learning Center.

July 28 Update

PJM has issued an additional Hot Weather Alert for its Mid-Atlantic region for July 29 amid continued hot and humid weather.

Hot Weather Alerts are issued when temperatures are expected to exceed 90 degrees Fahrenheit (93 degrees in some areas) with high humidity, driving up demand for electricity. High temperatures are expected to remain in the 90s for much of the week.

The Mid-Atlantic region includes the Atlantic City Electric, Baltimore Gas & Electric, Delmarva Power, Jersey Central Power & Light, Met-Ed, Penelec, PECO, PEPCO, PPL Electric Utilities, PSE&G, and Orange & Rockland: Rockland Electric Company transmission zones.

PJM previously issued Hot Weather Alerts for the Mid-Atlantic and Dominion regions from July 26 to 28.

July 24 Post: Hot Weather Alerts Issued for July 26–28 in Mid-Atlantic, Dominion Regions

PJM has issued a new round of Hot Weather Alerts for its Mid-Atlantic and Dominion regions in anticipation of hot and humid weather along the eastern part of the 13-state PJM region from July 26 to July 28.

Hot Weather Alerts are issued when temperatures are expected to exceed 90 degrees Fahrenheit (93 degrees in some areas) with high humidity, driving up demand for electricity. High temperatures are expected to be in the 90s early next week.

The Mid-Atlantic region includes the Atlantic City Electric, Baltimore Gas & Electric, Delmarva Power, Jersey Central Power & Light, Met-Ed, Penelec, PECO, PEPCO, PPL Electric Utilities, PSE&G, and Orange & Rockland: Rockland Electric Company transmission zones.

Recent Hot Weather

Amid hot and humid weather earlier this week, PJM served a preliminary peak load of approximately 145,372 MW on July 20, presumed to be the highest peak of the year so far.

Preliminary integrated hourly loads are calculated daily from raw telemetry data and are approximate for informational purposes only.

What Is a Hot Weather Alert?

A Hot Weather Alert prepares transmission or generation facilities for extreme hot or humid conditions which may pose capacity issues for the grid. To reliably serve demand, transmission and generation operators are asked to identify any maintenance or testing on equipment that can be deferred or canceled so as to make all equipment and resources available. PJM’s reserve resources are available to cover for generation that may be unexpectedly unavailable or to help meet demand that is higher than forecasted.

Tools to Track PJM Operations

Track PJM’s markets and operations in real time on the Markets and Operations page on PJM.com or through the PJM Now app for iPhone and Android. Learn more about how PJM prepares for summer operations on the Learning Center.