At the core of reliable power supply to the city is the unique 'Islanding System' pioneered by Tata Power, due to which the city of Mumbai has the advantage of assured uninterrupted reliable supply of power. In case of a grid failure, the Islanding System ensures uninterrupted power supply within the city limits. In case of a breakdown in the Western Regional Power Grid, Tata Power's system is automatically isolated from the rest of the grid. It ensures that our generating units continue to function. All essential services are assured continuity of power supply.