Update: PJM Issues Hot Weather Alert for Mid-Atlantic Region for July 7 and 8; Dominion Region for July 8

[Update, published July 6]

PJM has issued a Hot Weather Alert for its Mid-Atlantic Region for July 7 and 8 and for its Dominion Region for July 8. No problems are expected at this time. The alert is being called because the forecast temperatures in these regions will be above 90 degrees Fahrenheit. No problems are expected.

Hot Weather Alerts do not trigger PJM’s Capacity Performance Assessment Hours for capacity resources.

[Original story, published July 5]

PJM has issued a Hot Weather Alert for July 7 for its Mid-Atlantic Region only. This is the first emergency procedure PJM has issued this summer.

No problems are expected. The alert is being called because the forecast temperatures in the Mid-Atlantic Region will be above 90 degrees Fahrenheit.

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.

A Hot Weather Alert prepares transmission/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 any generation or substation equipment can be deferred to a later date or even canceled.