The following material of hundreds of pages attempts to introduce to the reader the licensing procedures for power plants and heating plants using renewable energy sources (biomass – gas, liquid and solid –, wind, solar, hydro and geothermal energy), and for factories producing fuels. For a comprehensive assessment of the procedures Energia Klub and the Dr. Lengyel Attila Attorney Office invited by Energia Klub conducted 33 face-to-face and several telephone interviews with entities involved (authorities, investors and entrepreneurs with grid connection permits). In the meantime, the relevant Hungarian regulations were also processed. Based on the accumulated experience we can safely say that all licensing procedures were adequately modelled.