In case of a potential SOL violation due to a planned outage, which initial action is essential for Reliability Coordinators?

In the event of a potential System Operating Limit (SOL) violation due to a planned outage, the initial action that is essential for Reliability Coordinators is to stop the planned outage. This is critical because the primary responsibility of Reliability Coordinators is to ensure the reliability of the bulk electric system. If a planned outage could lead to an SOL violation, halting that outage helps to prevent immediate risks to system reliability.

Stopping the outage allows for a reassessment of system conditions and a better understanding of how the outage could affect the overall stability and performance of the electric grid. This step is crucial to maintain reliability and prevent cascading failures or other complications that might arise from proceeding with a potentially harmful outage.

The other options, while important in their own right, do not address the immediate need to preserve system reliability in the face of a possible violation. Consulting Transmission Operators could help gather information, reviewing performance metrics is useful for ongoing operations, and alerting regulatory bodies could be necessary later on, but those actions do not take precedence over the critical need to stop the planned outage in response to the violation risk.