How many megawatts (MW) of firm load shedding is reportable by the initiating entity, regardless of how it was shed?

The answer of 100MW is correct because it aligns with the established threshold for reportable firm load shedding as outlined in NERC standards. Specifically, firm load shedding refers to the intentional disconnection of load to maintain the reliability of the electrical grid in response to system conditions. The 100MW threshold is significant because it establishes a clear quantifiable point at which the initiating entity must report load shedding events to ensure situational awareness and facilitate responses that are necessary for grid reliability across the interconnected systems.

This requirement is critical for maintaining the reliability of the power grid. By ensuring that any firm load shedding of 100MW or greater is reported, system operators can assess the impacts on overall system reliability, analyze performance, and coordinate responses among different entities. This reporting also serves as a mechanism for improving operational practices and enhancing coordination amongst various reliability entities.

The other thresholds either below or above this number are not aligned with the established NERC protocols, which focus specifically on the importance of this 100MW threshold in maintaining comprehensive situational awareness and facilitating operational reliability across the electric grid.