What does ATC stand for in the context of energy transmission?

Available Transfer Capability is a crucial term in the context of energy transmission, referring to the maximum amount of electric power that can be transferred reliably over a transmission network at a given point in time, under specific system conditions. Understanding ATC is essential for grid reliability, as it helps in determining how much additional load can be accommodated, or how much power can be imported or exported between different areas.

ATC is calculated by considering the physical limitations of the transmission lines, generation availability, and the demand on the system. It plays a significant role in market operations, ensuring that electricity supply meets demand without violating operational constraints. Thus, the identification and management of ATC are vital in maintaining system reliability and efficiency in electrical transmission systems.