The Balancing Authority’s data acquisition for ACE must occur at least every how many seconds?

• A. 1 second
• B. 30 seconds
• C. 60 seconds
• D. 6 seconds

Answer: (C)

The main idea is that real-time monitoring of ACE relies on timely data, and the standard specifies a 1-minute cadence for acquiring the necessary data. ACE reflects the balance between an area and its schedule, so the Reliability Coordinator needs up-to-date measurements to detect and respond to deviations quickly. Requiring data at least every sixty seconds provides a practical balance between timely visibility and data throughput across the interconnection. Data more frequent than that (such as every second or every few seconds) adds workload without changing the essential monitoring capability, while longer intervals (like every thirty seconds) would delay detection of trends and reduce situational awareness. So, the minimum required interval for ACE data acquisition by a Balancing Authority is sixty seconds.