Huge traffic jams were reported from various parts of the capital, including Connaught Place, ITO, Ashoka Road, India Gate and Laxmi Nagar.
"Due to grid failure for the second time since yesterday, the city is without electricity in most of the areas. Traffic signals are not functioning due to power failure.
"We are trying to manage traffic with the help of police personnel. This slows down traffic," Satyendra Garg, Joint Commissioner of Police (Traffic), said.
Commuters were put to hardship as bus services were hit due to traffic jams. Auto drivers also refused to take passengers because of the traffic chaos.