Capacity Shortage Alerts

Question 1

How many Capacity Shortage Alerts are there, and what are they?

Answer 1

There are 4 Capacity Shortage Alerts:

1. Unit Startup Notification Alert
2. Maximum Emergency Generation Alert/Load Management Alert
3. Primary Reserve Alert
4. Voltage Reduction Alert

Question 2

What is the purpose of a Unit Startup Alert Notification?

Answer 2

To alert members to place generating units in a state of readiness so that they can be brought online within 48 hours in anticipation of a shortage of operating capacity, stability issues or constrained operations.

Question 3

What is the trigger for a Unit Startup Alert Notification?

Answer 3

When a reliability assessment determines that long lead time generation is needed for a future period.

Question 4

What is the purpose of a Maximum Emergency Generation/Load Management Alert?

Answer 4

To provide an early alert that system conditions may require the use of the PJM Emergency Procedures.

Question 5

What is the trigger for a Maximum Emergency Generation/Load Management Alert?

Answer 5

When Maximum Emergency Generation is called into the operating capacity, or if Demand Response is projected to be implemented. **Operating Reserve Requirement is greater than scheduled Operating Reserve.

Question 6

What is the purpose of a Primary Reserve Alert?

Answer 6

To alert members of the anticipated shortage of Operating Reserve Capacity for a future critical period.

Question 7

What is the trigger for a Primary Reserve Alert?

Answer 7

When the estimated Operating Reserve is less than the forecasted Primary Reserve requirement.

Question 8

What is the purpose of a Voltage Reduction Alert?

Answer 8

To alert members that a voltage reduction action may be required in a future critical period.

Question 9

What is the trigger for a Voltage Reduction Alert?

Answer 9

When the estimated Operating Reserve capacity is less than the forecasted Synchronized Reserve Requirement.