Which action is necessary for a Balancing Authority to effectively operate within the Control Performance Standards?

To effectively operate within the Control Performance Standards, it is essential for a Balancing Authority to regularly monitor the Area Control Error (ACE). The ACE is crucial as it indicates the difference between the actual and scheduled power flows in relation to the Balancing Authority's load and generation. By keeping a close eye on ACE, the Balancing Authority can swiftly identify any imbalances in its operations and take corrective actions to maintain system reliability and stability.

Monitoring ACE helps the Balancing Authority ensure that it is not deviating from the operational standards required to balance supply and demand on a real-time basis. This practice is fundamental to achieving compliance with regulatory requirements and maintaining the overall health of the electric grid.

While increasing renewable energy resources, conducting frequent audits, and regulating energy imports can all play roles in the broader context of balancing operations, none are as directly tied to the immediate necessity of real-time operational effectiveness as the consistent monitoring of ACE. Therefore, regularly observing ACE is a vital function that supports the objectives of system balancing and reliability.