The paper considers the prospect of using renewable energy sources in the country’ s fuel balance. An important source of energy is biomass, which is characterized by renewability, accessibility, versatility, minimal impact on the environment, transportation, accumulation and storage. At the same time, biomass has a number of disadvantages: a heterogeneous structure with a broad fractional composition, with low bulk density and energy density, and high initial humidity, and often ash content. To improve the thermal characteristics and to increase the energy efficiency of using biomass, it is subjected to physical, biochemical or thermochemical conversion. An effective way to improve the thermal characteristics of the original biomass is to compress it in a mixture with other combustible materials, for example, organic waste from agriculture, oil refining, coal, paper industry, which allows, in particular, to solve environmental problems as well.