EN
Development of renewable energy sources and efficient use thereof are universal indicators of responsible environmental policy. It is estimated that in EU countries, biomass can provide approximately 2/3 of the declared share of energy generated from RES in 2020. This paper identifies, on the basis of the example of Warmińsko-Mazurskie province, both the existing producers of biomass and operators involved in the processing and purchase thereof. Furthermore, an attempt was made at assessing local determinants affecting the development of the production trend concerned, with account taken of sustainable development of agriculture and rural areas. In order to identify the producers and processors of biomass for energy purposes, a computer application called MapInfo Professional was used, it being a useful GIS tool for data acquisition (building databases), processing, and visualization in the form of tables and thematic maps.