The diploma thesis is focused on the issue of consolidated financial statements, namely the change of the consolidation method, the consolidation group Energie - stavební a báňská. The theoretical part defines the basic concepts and ways of calculations related to the topic. In the analytical part, the thesis deals first with the analysis of the current economic situation of the group, as well as with the calculation of the full consolidation method. This area will proceed freely to the design part, which includes a concrete proposal for streamlining the economic results of the consolidation group. Finally, the effects of the proposed change in the consolidation method will be fully evaluated using financial analysis.