The economic aspect of the use of distributed generation and renewable sources in the combined process of energy production

The paper presents accumulated experiences and conclusions on renewable energy sources and distributed generation operating in the structures of the power system. The worked out conclusions on the influence of cogeneration and different origins of green energy sources take into consideration the need to adapt new distributed generation systems to function in the conventional power industry. The paper includes outlook on prosumer energy industry and emphasises the ways of managing micro energy systems. Combined energy production, with the participation of renewable sources, is reviewed in the paper, and the problems and possible solutions resulting in the multidimensional energy industry are discussed.