The paper presents the results or the integrated assessment or environmental and human health impacts or emissions released from different sectors in Poland. The analysis was performed with the use or the curelian emissions transport model POLAIR 31) and the Regional Air Pollution Information and Simulation model RAINS. The models arc briefly described. At present, this hybrid system can operate in a simulation mode and enables estimation or the emission and concentration/deposition levels or main air pollutants, emission control costs, environmental impacts and external costs associated with different energy scenarios. Emission levels or main air pollutants in 2005, 20 I O and 2020 arc presented lor the selected energy scenario. Associated external costs and impacts on acidification have been estimated.