The blackout affects about half of India’s population, and knocked out power to the capital New Delhi and several other major cities. It comes a day after a mass outage left eight states without power for much of the day.
Shailendre Dubey, an official at the Uttar Pradesh Power Corp, says the northern grid collapsed at about 1:05pm (07:35 GMT) on Tuesday.
VK Agrawal, the general manager of the grid, confirmed the outage.
“We are busy with the revival right now… Both the northern and eastern grids have…Tweet