Which values must Balancing Authorities agree upon for inadvertent interchange?

Balancing Authorities must agree upon both the hourly values of the Net Interchange Schedule as well as the hourly integrated megawatt-hour values of Net Actual Interchange for inadvertent interchange management. This ensures that all parties have a shared understanding of the scheduled energy exchanges and what has actually been delivered or consumed during a specific time period.

The Net Interchange Schedule represents the planned flow of electricity between Balancing Authorities, indicating how much energy is expected to be transmitted. In contrast, the Net Actual Interchange provides the measurements of what actually occurred in the interchange. By reconciling these two sets of data, Balancing Authorities can effectively evaluate any inadvertent interchange that may have occurred, which is crucial for maintaining the reliability and stability of the interconnected electrical grid.

The other options do not encompass both necessary components: they either focus solely on the scheduled values, the specific interconnecting tie lines, or on individual transactions, which does not give the full picture required to manage inadvertent interchange correctly. This comprehensive understanding helps Balancing Authorities to coordinate better and rectify any imbalances that may arise, supporting overall grid stability.