PJM has issued a Hot Weather Alert for its Mid-Atlantic and Dominion Regions for July 18.
The alert is being called because temperatures are forecast to be above 90 degrees Fahrenheit. No problems are expected at this time.
The peak Thursday, July 14, was just over 141,000 MW with no issues. System-wide demand is expected to be lower Friday because of lower temperatures in the western portion of the PJM footprint.
A Hot Weather Alert prepares transmission or generation personnel and facilities for extreme hot and/or humid weather conditions that may cause capacity problems on the grid. Transmission/generation operators determine if any maintenance or testing on their facilities can be deferred to a later date or even canceled.
Hot Weather Alerts do not trigger PJM’s Capacity Performance Assessment Hours for capacity resources, which PJM uses to assess a generator’s performance during selected emergency actions.
The PJM Mid-Atlantic Region consists of the service territories of the following transmission owners: Atlantic City Electric, Baltimore Gas and Electric Company, Delmarva Power, Jersey Central Power & Light Co., Metropolitan Edison Co., PECO, Pennsylvania Electric Co., Pepco, PPL Electric Utilities, Public Service Electric and Gas Co., Rockland Electric Company and UGI Utilities.