MORAVEC, A., VÍTĚZ, T., HAVLÍČEK, M.: Evaluation of one year of operation of the biogas plant in Suchohrdly u Miroslavi. Acta univ. agric. et silvic. Mendel. Brun., 2011, LIX, No. 6, pp. 235-238 The manner of designing biogas plants is eagerly described by each and every seller or supplier of the respective technology. Numerous feasibility studies comprising forecasts of future operation featuring diff erent quality levels have been written. However, it is rarely possible to obtain information comparing the anticipated future numbers and real values. Nevertheless, an evaluation of past operation of BGP is of utmost importance for calibration of the calculation methods used for designing of future BGPs. Information obtained on the basis of an evaluation is also useful for the purpose of verifi cation of correct functionality of the equipment as well as optimisation of its operation with the objective of achieving the planned (or even better) values of profi tability of each respective project. A comprehensive analysis of a biogas plant is a project sensitive to accuracy of inputs. Measurements of amounts and quality of the feed substrate throughout the whole year, which comprises numerous criteria, is highly demanding and complicated, and therefore the objective of this evaluation is to analyze the performance, production and consumption of the biogas plant in the course of a calendar year (Schulz et al., 2004). Power measuring tasks are performed using calibrated gauges (which are mostly used for invoicing purposes), thus ensuring accuracy and credibility of the input data.biogas, anaerobic fermentation, biogas plant Functionality of our society is currently dependent on exploiting of the limited amount of non-renewable resources of energy. The everincreasing energy demands force us to look for a replacement of the non-renewable resources of energy by other (renewable) resources. One of the available alternatives pertains to use of biomass within the process of anaerobic fermentation resulting in creation of biogas that may be further used for energy-related purposes. Anaerobic technologies off er an attractive manner of use of biomass resources for the purpose of partial satisfying of the energy needs of our society (Yadvika et al., 2004). Anaerobic fermentation is a process typical for decomposition of organic matter without in an environment in which air is not present. The total production of biogas comprises mainly transformation of acetic acid to methane and carbon dioxide (70%) while 30% represents transformation of hydrogen and carbon dioxide to methane and water (M. Kaltschmitt et al., 2009;Tirumale and Nand, 1994; Tatar et al., 1998).The analyzed BGP represents a construction project completed on a green fi eld located in the close vicinity of a former livestock production premises. The premises were vacated at the time of construction (2007). At the time of designing of BGP the farmer was fully aware of the synergies pertaining to interconnection of the operation of BGP with livestock produ...