Power Grid Corp India Ltd sources said that the Tuesday's collapse is the most severe ever in the country. "Grid incident occured at 1300hrs effecting the Northern, Eastern & North Eastern Grid. System under restoration," Eastern Regional Load despatch Centres said. Central Electricity Authority officials have said that the collapse of three grids is unprecedented. "May take over a day to recover. Three grids - Northern, North eastern, and eastern - have collapsed together. The grids will be restored seperately," officials said. According to the officials, hydro power plants will be started first. Thermal plants may take the longest to come back on stream. "The entire drill may take a complete day. Situation may be normal by Wednesday," they added. All power generating stations connected to North, East and North East have been shut down. Kolkata, however, was partly insulated from the outage as the city is supplied by CESC Ltd, which has its own sources also. A top CESC executive told ET that that the city has a shortfall of 400-500 mw. Monday's collapse of the northern grid, the worst in a decade, was triggered by violation of discipline by states, which drew excessive power, which some officials said was due to political pressures.
Hundreds of millions without power in India
The country's power minister has blamed the crisis on states drawing too much power from the national grid. In a statement on national TV on Tuesday evening, Power Minister Sushil Kumar Shinde said he had appealed to states to stop trying to take more than their quota of power. "I have also instructed my officials to penalise the states which overdraw from the grid," he said. Media reports in India have suggested that Uttar Pradesh is among the states that government officials have been blaming for the grid collapse. But officials in the state denied this, saying there was "no reason to believe that any power operations in Uttar Pradesh triggered it". Anil K Gupta, the chairman of the state's power company, called for "further investigation to ascertain the real cause". Also on Tuesday it was announced that Mr Shinde had been promoted to the post of home minister, in a widely anticipated cabinet reshuffle. This is also the season of no rain when humidity is high, the heat is sweltering and people get taken ill” After Monday's cut, engineers managed to restore electricity to the northern grid by the evening, but at 13:05 (07:35 GMT) on Tuesday, it collapsed again. The eastern grid failed around the same time, officials said, followed by the north-eastern grid. Areas affected include Delhi, Punjab, Haryana, Uttar Pradesh, Himachal Pradesh and Rajasthan in the north, and West Bengal, Bihar, Orissa and Jharkhand in the east. Across West Bengal, power went at 13:00 and all suburban railway trains on the eastern railways ground to a halt from Howrah and Seladah stations, the BBC's Rahul Tandon reports from Calcutta. However, the city is not badly affected as it is served by a private electricity board, our correspondent adds. But the collapse of an entire grid is rare - the last time the northern grid failed was in 2001. India's demand for electricity has soared in recent years as its economy has grown but its power infrastructure has been unable to meet the growing needs. Correspondents say unless there is a huge investment in the power sector, the country will see many more power failures. North India grid failure: India's worst power crisis in a decade
Apart from Delhi, power crisis hit Rajasthan, Punjab, Haryana, HP, UP and J-K. Latest reports state that the electricity has been restored in Jaipur, Rohtak and Chandigarh.
Addressing a press meet, Power Minister Sushilkumar Shinde said, "A three-member panel will look into the failure of the Northern Grid, which led to power outages throughout the region today, and submit its report in 15 days.