Soil energetic effectivity knowledge through biomas produced by plant can be one of the decisive parameters of their production capability assessment as well as categorization for their potential use. Based on the crops production soil parameters were selected and potential of bioenergy production of Slovak soils was derived. Energetically most productive are the soil types like Chernozems (88.6 GJ.ha-1) and Mollic Fluvisols (76.14 GJ.ha-1). The least energy amount generate Gleys, Organosols, Solonetzes and Lithosols (31.63 GJ.ha-1). The highest assumption for energy production (79.11 GJ.ha-1) is upon the soils located in the climatic region very warm, very dry, lowland. According textural composition most energy (56.98 GJ.ha-1) was produced by loamy soils, do not threaten by wate erosion (73.25 GJ.ha-1), by sloping to 3° (66.61 GJ.ha-1) and skeletonless soils (68.57 GJ.ha-1). According tu selected scale of plant biomass production assessment on farm land, the soils high and very high productive (above 212 GJ.ha-1) are located mostly in plains. Energy accumulated in farmland exploitability by plants cropped is variable depending from soil representative and its properties. The lowest exploitability was found at Cambisol (0.7-1.8%), the highest at Regosols (3.1-7.0%).