Bitterly cold temperatures are causing a strain on the EPB system.
Spokesperson John Pless said there were scattered power outages through Monday, including 1,800 homes and businesses at one point.
He said the hardest hit area was Signal Mountain.
Mr. Pless said a wire burned out earlier in the day near the Fairmount substation. Power had to be diverted while the line was being repaired and that brought other issues.
He said some 1,800 homes and businesses along the Taft Highway area were without power in the range from 4:30 to 6:30 p.m.
Mr. Pless said as of 8 p.m. there were 436 homes and businesses without power. They included 159 in Sale Creek, 127 in East Ridge and 100 in Brainerd.
He said the EBP and TVA are bracing for temperatures dropping to just above zero on Tuesday morning.
He stated, "The system should handle it fine, but there may be still more small outages with the especially cold temperatures and the extremely heavy load on the system."
It is possible to follow the outages by going to epb.net and clicking on the outage map.