Three tech. glycerol samples were studied for phys. and chem. properties and added (1-2%) to bituminous coal or its blend with wooden chips (13.9%) used as solid fuel in a power plant (180 MW). Compn. of flue gas and properties of slags and fouling deposits were detd. The addn. of glycerol did influence neither the firing process nor the properties of fuel gases and solid wastes.