Power outages roll on for thousands in the Bronx because of Tropical Storm Isaias, where many downed powerlines will need fixing before turning power back on.

Gov. Andrew Cuomo declared a state of emergency for New York City, making it easier for state authorities to help local officials with cleanup efforts. He added he was launching an investigation into major utility companies including Con Edison, saying companies have shown "reckless disregard" for storm planning.

In a press release early Thursday, Con Edison says the company is more than halfway completed with restoration progress - 85% of affected customers in Brooklyn, and 74% of affected customers in Staten Island.

There are 19,800 homes in the Bronx that are still without power. More than 10,000 affected customers have their power restored, per the company.

"The damage from the storm was extraordinary and we've worked to clear trees that blocked over 500 roads, and we have reports of over 7,000 wires down," said Con Edison Vice President of Emergency Preparedness Matthew Sniffen. "It's important that the public hear our message about avoiding downed wires."

Company officials add they're hoping to restore power for a big portion of the Bronx by Sunday night, adding all customers will most likely be restored early next week.

In the press release, the company said crews prioritize repairs that will provide power to the most customers quickly, followed by smaller groups and individual customers.

"Customers are urged to report their outage to and check restoration status at conEd.com/reportoutage, or with Con Edison’s mobile app for iOS or Android devices, or by calling 1-800-75-CONED (1-800-752-6633)," the release said.

Additionally, the company said that Isaias’s destruction surpassed Hurricane Irene’s, which caused 204,000 customer outages in August 2011. The record for storm-related outages is 1.1 million caused by Hurricane Sandy in October 2012, according to Con Edison.