What does the acronym "FAC" in NERC standards address?

The acronym "FAC" in NERC standards specifically pertains to "Facility ratings and transmission planning." This involves the evaluation and management of the electrical characteristics and capabilities of facilities, which are critical for ensuring that the electric grid operates efficiently and reliably.

Understanding facility ratings is essential for both operators and planners in the electrical grid to manage load, maintain stability, and avoid overload conditions. Ratings determine how much power transmission facilities can handle, which impacts the overall operation of the grid, especially during peak conditions or system disturbances. By focusing on transmission planning, NERC ensures that standards drive the necessary infrastructure and capability assessments that are vital for long-term reliability and operational effectiveness.

While the other options touch on important aspects of power system operation and management—like safety, assessments, and automation—they do not specifically reflect the focus of the FAC standards in relation to the NERC framework for electrical transmission systems. Thus, the emphasis on facility ratings and transmission planning accurately captures the intent and purpose of the FAC standards.