In most of the states, the allocation from Central Generating Stations is less than the demand of the state. Electricity is a concurrent subject. It is the responsibility of the State Government to arrange power from various sources - state’s own generation, power exchanges, other states to meet the requirement of the state.

The Government of India only supplements the efforts of the State Governments by establishing power plants and transmission system in Central Sector through Central Power Sector Undertakings (CPSUs) and allocating power from them to the States and UTs.

Various States and UTs request for additional allocation of unallocated power of Central Generating Stations (CGSs) from time to time in times of deficit. The quantum of unallocated power in the CGSs being limited, it can only supplement the power available from other sources.

Based on Conventional Sources, total capacity of Central Power Generating Stations is 80,677.25 MW, as on 31 January, 2018.