Tennessee Valley Authority estimated on Sunday that about 6,760 homes and businesses in 12 power distributor areas remained without electric service due to damage from the tornadoes and storms. At the peak, almost 850,000 customers were without power in 75 distributor areas.

Only one TVA connection point remained out of service on Sunday, affecting one large industrial customer. At the peak, 128 customer connections were affected.

TVA continues to allow customers in Alabama to resume normal operation on most customer loads, using extreme caution to ensure that the transmission system remains stable.

Restoration progress is being managed to deal with three issues: the extent of damage to transmission lines; the ability to link transmission lines together to reliably supply power; and the need to link generation sources that supply electricity to transmission lines, which in turn supply electricity to end-use customers.

Workers from the seven-state TVA service area, plus Florida and Pennsylvania, are working to repair the transmission system.

More than 300 poles or steel structures were damaged in the storms, resulting in more than 90 large transmission lines being out of service, including a large portion of the 500-kilovolt and 161-kilovolt lines serving North Alabama and Mississippi.

TVA exited the Notice of Unusual Event for Browns Ferry Nuclear Plant at 8:50 p.m. CDT on Monday following restoration of a second power line to the plant. The Central Emergency Control Center was also deactivated Monday at 9:15 p.m. CDT.