The bachelor's thesis deals with possible form of installation photovoltaic power plant on building, shading analysis and impaly possible way of calculation potential production of elektrical energy. In thesis is describe basic division and diferent methods of instalation photovoltaic systems. The following charter describing source of shading, shading analysis and effect of fading on photovoltaic moduls. The thesis include different way of calcuation potential production of elektrical energy by photovoltaic power plant. The practical part deals with the analysis of a selected area and the calculation of potential electrical energy using photovoltaic modules and photovoltaic roof tiles with chosen calculation method