The Safa (Synchronous Area Framework Agreement) Annex Policy on Load-Frequency and Reserves is a critical agreement that plays a significant role in the operation of power systems. This agreement is a part of the wider Safa agreement between several countries that share a common power system, including India, Bangladesh, Bhutan, and Nepal.

The primary aim of the Safa Annex Policy on Load-Frequency and Reserves is to maintain the balance between the demand and supply of electricity in the power system. This balance is critical to ensure the stability, reliability, and efficiency of the power system. The Annex Policy sets out the rules and guidelines for the management of load-frequency and reserves, which are crucial components of the power system`s operation.

The load-frequency control is a mechanism that automatically adjusts the power output of generators to match the demand for electricity in real-time. This control is essential to maintain the frequency of the power system within an acceptable range. The Safa Annex Policy requires each country to provide adequate reserves to manage load-frequency control. These reserves are additional capacity that can be quickly dispatched to the system when there is a sudden increase in demand or a loss of generation capacity.

The Safa Annex Policy also outlines the requirements for the calculation and allocation of reserves. The policy requires each country to maintain a reserve capacity equivalent to 5% of their peak demand. This reserve must be available at all times, including during emergencies. The policy also allows countries to exchange their reserves in case of emergencies or unexpected events.

Overall, the Safa Annex Policy on Load-Frequency and Reserves is a crucial agreement that ensures the stability, reliability, and efficiency of the power systems in the region. This policy helps to manage the load-frequency control and maintain adequate reserves to ensure uninterrupted power supply. By adhering to this policy, the countries in the region can ensure that their power systems operate smoothly and provide reliable electricity to their citizens.