What is the method used to notify other PJM member companies of an outage for systems operating at 500kV or above?

The method used to notify other PJM member companies of an outage for systems operating at 500kV or above is the All-Call approach. This protocol is critical in ensuring that all relevant parties are immediately informed of significant outages, as these high-voltage systems are essential for maintaining the stability and reliability of the larger transmission network.

The All-Call method allows for the rapid dissemination of information through a conference call that includes representatives from various member companies. By utilizing this method, PJM can facilitate quick coordination and response among its members, ensuring that any necessary actions to mitigate the outage can be discussed and implemented promptly.

Timely communication during such outages is vital because systems operating at 500kV or higher can have widespread implications on power delivery and grid reliability. Effective use of the All-Call method helps to ensure that all members have a clear understanding of the situation and can adjust their operations accordingly.