The paper discusses the possibility of using alternative fuels from bio-mass and plastics in Poland. Their physiochemical properties and possible application in the chemical, cement and energy industries were determined. The heat of combustion of the tested samples was 26.169 MJ·kg−1. On the other hand, the moisture content in the tested material was 1.6%, i.e. within the requirements for this raw material. Since the chlorine content in relation to the sulfur content in the waste is an indicator of the corrosive potential of the fuel, the content of chlorine and sulfur was determined in laboratory tests. The analyzed waste samples were within the specified requirements. The tested material, in which the chlorine content was determined (0.577%), indicates that the tested fuels can be included in the power industry, in accordance with PN-EN 15359:2012.