The whole of north India on July 30, 2012 witnessed the worst blackout in a decade. Millions of people in the North India woke up with no electricity. Though the power supply was restored in the evening, the question arises to what led to such a massive blackout.

A panel has been appointed by Power Minister Sushil Kumar to probe the cause of the blackout and the report is expected to be submitted in the next 15 days. The officials and a report of the National Load Dispatch Centre, some of the North Indian states like Haryana, Uttar Pradesh and Punjab draw more power than it is authorised.

This could be the main cause of the major blackout faced on Monday. In the month of May, the Central Electricity Regulatory Authority had issued notices to the state load dispatch centres of the states of Uttar Pradesh, Rajasthan, Punjab and Haryana asking them to halt the overdrawing power from the Northern Grid.

As the Central Electricty Regulatory Authority had asked the despatch centres to be prepared to buy the additional power to meet the demands during summer and monsoon, the states failed to take notice and did not maintain the grid. The delay of monsoon has also led to the increase in the demand of power.