DTE Energy said about 1,000 customers remain without power early Thursday morning after more than 140,000 homes and businesses lost service.
Storms brought down about 800 power lines, and it could take crews until late Thursday night before all connections are restored.
About 58,000 homes and businesses are still without power; and trees are down across the region.
A second wave of thunderstorms moved across metro Detroit Wednesday, knocking out power to more than 50,000 homes and businesses.
Many travelers are missing their flights because of the outage. Several flights have also been delayed due to weather.
Multiple power lines were brought down by heavy winds. One home was hit by a fallen tree.
Scores of tree branches broke and fell from the weight of ice during the pre-Christmas storm, which knocked out power to roughly 650,000 homes and businesses.
Detroit’s lighting department says it’s finished restoring power to all of the 21 public schools that lost service in a storm, keeping 10 of them closed for two days.
Crews have restored power to over 75 percent of the homes and business knocked offline following three days of storms packing high winds.
Authorities say a downed power line along Woodward Avenue is causing about 1,400 outages.