Crews are still working to restore power for the remaining 28 percent of customers impacted by the storm.
The death toll from Hurricane Irma was at 82 early on Friday as 1.5 million homes and businesses in Florida remained without power in sweltering heat, five days after the historic storm ripped through southeast U.S.
The total number of customers, representing about 12 million people, dipped from a peak of more than 7.4 million customers, or about 15 million people, late on Monday. Locations without power have been flagged to the state to help utilities prioritize their work, the group said in a statement.
FPL customers are encouraged to visit wwww.fplmaps.com, and JEA customers can visit www.jea.com to track power outages by address and by county, and to report service interruptions to their home or business.
Over 100 people were evacuated from the building to a nearby shelter.
Duke Energy Florida had about 371,000 outages, while electric cooperatives had more than 323,000. The company said it estimates it will have power restored to nearly all customers along its east coast service area by the end of the day on September 17 and for customers along the west coast by September 22. They expect to restore power to essentially all customers by Sunday night, though they concede customers with more complex damage may take longer to restore.
On Wednesday, Georgia Power said it restored power to more than 700,000 customers with some 8,000 employees in the field.
"We know that our customers want their lives to get back to normal - and electricity is a key part of that", said Gordon Gillette, President and Chief Executive Officer of Tampa Electric. It made landfall at Marco Island as a Category 3 that afternoon, and headed up the state, leaving almost 2 million people without power, according to Florida Power & Light. "Thank you for your continued patience, and rest assured, we will get your power restored".