Three workers were burned in the second fire in a week to break out at the same power plant near Wheatland.
Basin Electric Power Cooperative says the fire broke out early Sunday at the Laramie River Station.
The Bismarck, N.D.-based utility said in a release Monday the fire started in the plant's coal unloading area.
Three workers were taken to Platte County Memorial Hospital. One worker was flown to a burn center in Greeley, Colo., and remains there for treatment.
The other two were released from the hospital and scheduled for follow-up treatment at the burn center Monday. Basin Electric spokesman Daryl Hill says he didn't know the employees' conditions.
A fire broke out at the same coal-fired power plant last Tuesday. Hill calls the fires coincidental and not related.