Power System Operation Corporation Ltd. (POSOCO), a Govt. of India Enterprise, under Ministry of Power, Govt. of India, is a Knowledge based organization of national importance. It is responsible for managing the power system operations - a mission critical activity, with security, economy and reliability. To achieve this, it has adopted a multidisciplinary approach with state of the art technology. It ensures equitable use of Transmission Infrastructure and has invested significantly in its human capital and towards strengthening the whole power system faculty. It operates the National Load Despatch Centre and the five Regional Load Despatch Centers.
Power System Operation Corporation Limited (POSOCO) was a wholly owned subsidiary of Power Grid Corporation of India Limited (PGCIL) till 2 January 2017. It was formed in March 2010 to handle the power management functions of PGCIL. It is responsible to ensure the integrated operation of the Grid in a reliable,efficient and secure manner. It consists of 5 Regional Load Despatch Centres and a National Load Despatch Centre (NLDC). The subsidiary was eventually made a separate company, leaving the parent firm with only the task of setting up transmission links. The load despatch functions, earlier handled by PGCIL, will now come up to POSOCO. Now POSOCO is fully govt. Company because on 3 January 2017 it was separated from powergrid.