Top officials said the grid failed at around 1:30 PM following which power supply snapped in all areas of the national capital.
Entire north India had plunged into the worst power crisis in a decade yesterday throwing normal life out of gear for several hours in eight states due to collapse of the Northern Grid.
At around 1:30 PM, Delhi had a demand of around 4,000 MW out of which only 38 mega watt was being supplied at around 1:45 PM.