Which Balancing Authority is responsible for initiating each Interchange Transaction as tagged?

The responsibility for initiating each Interchange Transaction as tagged falls specifically to the Sink Balancing Authority (BA). This BA is where the electrical energy is delivered or consumed, thus playing a crucial role in managing and tracking transactions that reflect the energy flowing into its control area.

In an Interchange Transaction, the Sink BA must confirm that it is prepared to accept the power being supplied to ensure that all operational and reliability standards are met. The tagging process provides essential information regarding the transaction, including details about the origin and amount of energy being exchanged and the timing of delivery. Therefore, the Sink BA's role is pivotal in ensuring that these transactions take place smoothly and that the delivery to the end-user aligns with the specified agreements.

While other BAs, such as Source and Market Administrator BAs, engage in different aspects of the transaction process, they do not initiate the interchange as the Sink BA does. The Regulatory Compliance BA's duties focus on ensuring adherence to regulations rather than directly engaging in the initiation of transactions. Understanding these roles is vital for maintaining reliability and efficiency in the electric grid.