Grid operator PJM extended a Hot Weather Alert and Maximum Generation Alert for its 13-state and D.C. footprint through today (July 30) as hot weather persists throughout the region it serves.
PJM's footprint includes the state of Delaware.
The alerts do not require any action from utility customers, although utilities may issue advisories.
PJM is issuing the Maximum Generation Alert mainly to notify neighboring grid systems that electricity exports from PJM may be curtailed.
PJM issues this alert at the same time as a Load Management Alert, which gives advance notification that a load management action may be declared, including non-Emergency and Emergency Demand Response. Demand Response programs pay large customers in advance who sign up to allow reduction of their electricity use in emergencies.
The Maximum Generation Alert is also targeted at transmission/generation owners, who then determine if any maintenance or testing on equipment can be deferred or canceled.
Estimated power demand. Relief from the heat is expected beginning on Thursday, with the chance of rain.
July 30: 152,500 MW
July 31: 134,000 MW
PJM notes that it has sufficient electric power resources to handle heat waves.
However, PJM has noted that its reserves have been dwindling as older power plants are retired, with renewable energy sources not keeping pace. It is also being blamed for an increase in wholesale electricity prices.
The grid opeator has made reforms in an effort to quicken the pace of new generation coming on line. Critics say developers have walked away from renewable power projects due to a long backlog in PJM's approval pipeline.
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