The paper is focused on an analysis of the impacts of public support of renewable electricity generation in the Czech Republic, mainly on the analysis of the impacts of both feed-in tariffs and grants on the renewable electricity generation. Firstly, the overview of public support of renewable electricity generation in the Czech Republic is briefly described, than the literature overview is presented. For the purposes of the paper, the methods of correlation and regression analysis are used. Based on the results, we can say, that there is the dependence mainly between minimal feed-in tariffs for electricity from biomass and generation of electricity from biomass. Regarding grants, there is the dependence between grants for electricity from biogas "and generation of electricity from biogas.