For real-time tags of interchange transactions less than an hour, when must they be submitted?

The correct answer, indicating that real-time tags for interchange transactions less than an hour must be submitted 10 minutes in advance, aligns with the reliability requirements established by NERC. This timeframe allows for the necessary processing and operational adjustments within the electric grid, ensuring that all market participants have adequate notice of changes in energy transactions.

NERC's standards emphasize the importance of timely submissions to facilitate an efficient and reliable electric system. Submitting real-time tags within this window helps maintain the balance of supply and demand and supports the coordination between different transmission operators and balancing authorities. It's crucial for ensuring that power flows are managed effectively, which directly impacts grid reliability and prevents overloads or system failures.

Understanding this timing requirement is essential for compliance with NERC standards and effective operation within the electric market.