How quickly should Unscheduled Flow Transmission Relief requested by the Transmission Operator be approved by the Reliability Coordinator?

The correct time frame for approving Unscheduled Flow Transmission Relief as requested by the Transmission Operator is 5 minutes. This requirement aligns with NERC standards that emphasize the importance of responsiveness and timely communication between entities involved in grid operations.

The need for quick approval stems from the nature of unscheduled flows, which can create significant reliability issues if not managed promptly. Delays in addressing these flows can lead to overloads in transmission lines or other components of the grid, risking stability and reliability.

The 5-minute timeframe ensures that the Reliability Coordinator can efficiently evaluate the situation and respond appropriately, providing an essential layer of coordination in real-time operational decisions. This prompt action is a critical aspect of maintaining reliability within the interconnected electric system and mitigating potential risks associated with unscheduled flows. Other options like 2, 10, or 15 minutes either do not fit the standard requirements for urgency or fail to adequately address the need for quick responsiveness in the context of maintaining system reliability.