Around 1.9 million homes and businesses in the Northeast remain without power on Sunday morning, down from 2.5 million on Saturday afternoon, the US Department's Office of Electricity Delivery & Energy Reliability said in a report.
New Jersey and New York accounted for nearly 90 per cent of the remaining power cuts.
A housing crisis loomed in New York City as victims of superstorm Sandy struggled without heat in near-freezing temperatures.
Victims of superstorm Sandy on the East Coast of America are struggling against the cold among fuel shortages and power outages.
The New York marathon has been cancelled in the aftermath of superstorm Sandy, Mayor Michael Bloomberg has announced.