With nearly 280,000 without power in Louisiana, more than 185,000 in Orleans and Jefferson parishes alone, and temperatures in the 90s, frustration was clearly evident.
You can't follow Twitter of participate on Facebook in this area without seeing people vent their feelings.
WWL-TV's newsroom has also fielded hundreds of calls from people wanting to know when power would be back on in their area.
Entergy wouldn't publicly say when power would be restored to a particular area, but Charles Rice, the CEO of Entergy New Orleans, which provides power to most of the city except for Algiers, said 70 percent of the city should be restored by Monday and 90 percent by Wednesday.
"We're working our tails off to get service back," said Rice.
As of 8 p.m., Entergy's web site indicated the following outages for their customers: Jefferson 103,000 - Orleans, 82,000 - St. John, 15,400 - Plaquemines, 9,600, St. Charles 9,600 and St. Bernard, 8,400.
Rice said that to many the length of time to restore power may seem unusually long, but that may be due to the fact that Isaac was only a tropical storm until just before landfall, keeping many in town.
"People really didn't leave," he said. "In a normal storm situation, people would evacuate, they'd be gone 2-3 days and when the return, power would be back in one to two days."