Professional Answer: A 240 kV (kilovolt) power transmission line is a crucial part of the extra-high voltage (EHV) grid. The actual power it carries varies based on factors like conductor type, line length, and system configuration. However, as an extra-high voltage line, it's designed for bulk power transfer over long distances, typically carrying hundreds of megawatts (MW). For example, a single 240 kV circuit can often carry between 200 MW and 400 MW, but this can increase significantly with multiple circuits or specialized conductors. The high voltage minimizes current, which in turn reduces energy loss during transmission, making it highly efficient for long-distance power delivery.