A fire Wedneday at the Shawnee Fossil Plant in Kentucky damaged one of the 10 units at the TVA coal-fired facility.
Tennessee Valley Authority and Emergency Management System units from across McCracken County, Ky., were called to the coal plant shortly before noon while plant workers were taking Unit 8 down for maintenance.
A TVA worker said oil from a broken line apparently came in contact with hot metal and ignited the fire.
TVA said in a statement Wednesday that two workers were treated for minor injuries before the fire was extinguished.
The fire is still under investigation, but the Unit 8 appears to be damaged and will require repairs before it may be restarted, officials said.
The fire is the second at a TVA coal plant in less than three months. A fire damaged one of the units at the John Sevier Fossil Plant near Rogersville, Tenn., on Dec. 30.