What is the response time for the TOP to notify about changes affecting the restoration plan?

The correct timeframe for a Transmission Operator (TOP) to notify affected parties about changes impacting the restoration plan is 24 hours. This time period is established to ensure that all relevant stakeholders have adequate notice of any modifications that could potentially alter the approach to system restoration following a disturbance. This allows for better communication, planning, and coordination among different entities involved in maintaining reliability after an event.

The 24-hour notification requirement aims to support effective system management and restoration efforts, ensuring that operators can prepare for any adjustments necessary in their operations or plans. This timeframe strikes a balance between the urgency of the situation and the need for comprehensive communication for all parties involved, thereby enhancing overall grid reliability.

Shorter notification times may not allow sufficient opportunity for thorough evaluation and response, while longer durations could delay critical updates that affect operational readiness. This makes the 24-hour period not just a requirement, but a practical guideline for effective grid management.