How often should ATC for the next 12 months be calculated?

Calculating Available Transfer Capability (ATC) for the next 12 months on a weekly basis ensures that the most current system conditions and operational data are considered in the assessment. ATC is crucial for maintaining the reliability of the grid and managing the flow of electricity across different entities. By updating this calculation weekly, operators can account for changing demand, generation patterns, and transmission constraints, which can vary significantly even within a single week.

This frequency allows for proactive adjustments to be made more rapidly, improves the accuracy of power transfer predictions, and helps in effectively planning for unexpected changes in system operations or emergencies. Regularly updated ATC calculations enhance coordination among all stakeholders in the electricity market, thereby supporting the reliability of the overall grid.

Calculating ATC less frequently, such as monthly or annually, could risk outdated assessments that do not reflect real-time conditions, potentially leading to operational challenges or reliability issues. Bi-weekly calculations might not provide the same level of responsiveness as the weekly approach, leaving potential gaps in managing system dynamics effectively.