Fire crews were called to waste disposal plant Dundee Energy Recycling on Sunday evening.
The Scottish Fire and Rescue Service said it was called to the plant in Forties Road at around 7.25pm after fire broke out in one of the buildings.
Two fire appliances attended and crews took just under an hour to get the incident under control.
Police Scotland said the fire was not being treated as suspicious. It is understood it may have been sparked by an electrical fault.
Nobody was injured.