PJM has extended its Hot Weather Alert to June 30 for its Mid-Atlantic and southern regions.
Temperatures are anticipated to go above 90 degrees with high humidity, which drives up the demand for electricity. A Hot Weather Alert helps PJM and utility partners coordinate the flow of energy and avoid capacity problems on the grid.
The Hot Weather Alert is currently in effect for all of the PJM footprint except for ComEd for Monday and Tuesday.
The Mid-Atlantic region includes 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 PJM southern region consists of Dominion Virginia Power’s service territory.
Original Story: Hot Weather Alert Issued for June 28–29
PJM has issued a Hot Weather Alert for most of the region PJM serves for June 28–29. The alert covers all of the PJM footprint except for ComEd.
Temperatures are expected to go above 90 degrees with high humidity, which drives up the demand for electricity.
A Hot Weather Alert helps PJM and utility partners coordinate the flow of energy and avoid capacity problems on the grid. It prepares 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.
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 that includes 13 states and the District of Columbia. 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
Learn more about how PJM prepares for summer operations on the Learning Center.