Fuels which are then virtually all normally associated by using existence 'firm fuel' include coal, peat and wood. A quick utilize of a lot these fuels is for creating fire, for domestic heating (see Wood fuel). These fuels clean likewise have a hanker history of industrial use. Coal was a fuel for the industrial revolution, from firing furnaces, to running steam locomotives on railways. Wood was as well extensively utilized to dog steam locomotives. Each peat & coal come however utilized within power generation today.

Around numerous populated area, average coal, & more firm fuels like wood, come banned. Within such areas, smokeless coal is typically a exclusively firm fuel utilized. Inside Ireland, peat briquettes are utilized when smokeless fuel. It is besides wont to lead off the coal fire.