The objective of this paper is to learn the possibilities of using biofuel to ensure the heating of indurating machines and assess its impact on the volume of emissions. The main source of fuel was sunflower husk, which can be used in pellet production by the following means: the firing and utilization of fume laden gas as a heat carrier during drying of blend materials and the gasification and utilization of syngas as the fuel in order to heat the indurating machines while thermally treating the pellets. Mathematical simulation was adopted as the research methodology. The results reveal that using biofuel to heat indurating machines during the pelletizing process is technologically feasible. However, there are numerous constraints that are mainly related to environmental issues and logistics. In the course of firing, husk generates additional solid waste and sulfur oxide, although, from the perspective of ESG statistics, it leads to a reduction in the carbon footprint of the end products. Issues related to the handling and storage of biofuel are caused by its aggregate state (solid), low bulk weight, and relatively low calorific value. The abovementioned parameters make biofuel a less favorable source of fuel when compared with natural gas. The aspects of biofuel application shall be considered when planning “energy transition” activities, since they affect economic viability, along with the environment of industrial regions (and the quality of life of inhabitants as well).