Abstract
This study aims to present the current distribution of photovoltaic and wind power plants in Poland and to determine the relationship between their installed capacity and various factors occurring in the districts where generation units in question are located. The current knowledge of the scope of this investigation is crucial for future environmental impact assessments studies related with evaluating cumulative impact of photovoltaic and wind power plants. Hence, this study contributes to the future assessments, especially authorities obliged to conduct environmental impact procedure can use the findings of this work useful to issue decisions. It was found that due to the non-normal distribution of the analysed variables, the rho-Spearman's correlation coefficient should be determined in similar analyses instead of Pearson's correlation coefficient. The correlation coefficients were determined to describe the spatial dependence of volume of the installed capacity of the renewable power plants analysed and several selected factors.