Aug. 12 Update: Hot Weather Alert Extended for Mid-Atlantic and Southern Regions

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PJM’s Mid-Atlantic and Southern regions will remain in a Hot Weather Alert for Friday, Aug. 13, as high temperatures and humidity continue in those areas.

High temperatures remain in the mid-to-upper 90s with high humidity, which drives up the demand for electricity.

A Hot Weather Alert helps to prepare transmission and generation personnel and facilities for extreme heat and/or humidity that may cause capacity problems on the grid. PJM works with transmission and generation operators to determine if they can defer or cancel any maintenance or testing on their facilities.

A previously issued Hot Weather Alert is currently in effect for all of the PJM region for Thursday, Aug. 12. The peak for Aug. 12 is forecasted to be a little under 152,000 MW.

The preliminary peak for Wednesday, Aug. 11, was around 141,500 MW.

Original Story: Hot Weather Alerts Continue for PJM (Aug. 11)

PJM has issued an additional Hot Weather Alert for Aug. 12 for its entire footprint as high temperatures and humidity continue throughout the region.

Temperatures are expected to be in the mid-to-upper 90s with high humidity, which drives up the demand for electricity.

A Hot Weather Alert helps to prepare transmission and generation personnel and facilities for extreme heat and/or humidity that may cause capacity problems on the grid. PJM works with transmission and generation operators to determine if they can defer or cancel any maintenance or testing on their facilities.

A previously issued Hot Weather Alert is currently in effect for all of the PJM region for Wednesday, Aug. 11. The peak for Aug. 11 is forecasted to be around 148,000 MW.

The preliminary peak for Tuesday, Aug. 10, was around 141,000 MW.

Preparing for Summer Demand

PJM power system operators have forecasted a peak demand for electricity this summer at approximately 149,000 MW but have performed reliability studies at even higher loads – in excess of 155,000 MW – for the region. PJM has over 185,000 MW of installed generating capacity available to meet customer needs, with sufficient resources available in reserve to cover generation that is unexpectedly unavailable, or for other unanticipated changes in demand.

PJM’s all-time highest power use was 165,563 MW in the summer of 2006. One megawatt can power about 800 homes.

Track Operations in Real Time

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.