July 9 Update: PJM Extends Hot Weather Alert to July 10 for Mid-Atlantic and Southern Regions

86

A Hot Weather Alert for PJM’s Mid-Atlantic and Southern regions has been extended to July 10 as 90-degree weather continues in those areas. A Hot Weather Alert is currently in effect for July 9 for the same regions.

A Hot Weather Alert is a routine procedure PJM issues ahead of forecasted 90-degree weather and/or high humidity in order to prepare transmission and generation personnel and facilities for expected increases in electricity demand. Temperatures in PJM’s Mid-Atlantic and Southern regions are expected to exceed 90 degrees.

PJM served a preliminary peak for electricity usage of 146,947 MW on July 8.

As of 8 a.m. on July 9, PJM’s forecasted peak for July 9 is approximately 144,400 MW and for July 10 is over 136,000 MW.

Overall, PJM projects higher peak demand for electricity this summer at approximately 151,000 MW compared with the 2023 summer peak load of 147,000 MW. PJM’s all-time, one-day highest power use was recorded in the summer of 2006 at 165,563 MW. One megawatt can power about 800 homes.

The Mid-Atlantic Region is made up of the Atlantic City Electric, Baltimore Gas and Electric, Delmarva Power & Light, Jersey Central Power & Light, Met-Ed, Penelec, PECO Energy, Pepco, PPL Electric Utilities, PSE&G, and Orange & Rockland (Rockland Electric Company) transmission zones. The Southern Region is made up of the Dominion transmission zone.

July 8 Update: Hot Weather Alert Extended to July 9 for PJM Mid-Atlantic and Southern Regions

PJM has extended a Hot Weather Alert to July 9 for PJM’s Mid-Atlantic and Southern regions ahead of 90-degree-plus temperatures. A Hot Weather Alert is currently in effect for July 8 for the entire region PJM serves.

A Hot Weather Alert is a routine procedure PJM issues ahead of forecasted 90-degree weather and/or high humidity in order to prepare transmission and generation personnel and facilities for expected increases in electricity demand. Temperatures in PJM’s Mid-Atlantic and Southern regions are expected to exceed 90 degrees.

The Mid-Atlantic Region is made up of the Atlantic City Electric, Baltimore Gas and Electric, Delmarva Power & Light, Jersey Central Power & Light, Met-Ed, Penelec, PECO Energy, Pepco, PPL Electric Utilities, PSE&G, and Orange & Rockland (Rockland Electric Company) transmission zones. The Southern Region is made up of the Dominion transmission zone.

As of 8 a.m. on July 8, PJM’s forecasted peak for July 8 is over 147,000 MW and for July 9 is approximately 144,000 MW.

Original Story (July 5): Hot Weather Alert Issued for July 8

PJM has issued a Hot Weather Alert for July 8 for its entire service area, which includes all or parts of 13 states and the District of Columbia.

A Hot Weather Alert is a routine procedure PJM issues ahead of forecasted 90-degree weather and/or high humidity in order to prepare transmission and generation personnel and facilities for expected increases in electricity demand. Temperatures are expected to reach the 90s throughout the PJM footprint, which increases demand for electricity.

As of 9 a.m. July 5, PJM expects to serve a peak demand of 141,861 MW on July 8.

Overall, PJM projects higher peak demand for electricity this summer at approximately 151,000 MW compared with the 2023 summer peak load of 147,000 MW. PJM’s all-time, one-day highest power use was recorded in the summer of 2006 at 165,563 MW. One megawatt can power about 800 homes.

Predicting the demand for electricity helps procure an adequate supply of power today and in the years ahead. Making these predictions – called load forecasting – is a job PJM does routinely, for both short- and long-term periods, to help acquire an adequate supply of power for reliable service at the most reasonable cost.

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.