Hydropower is one of the reusable energy resources or renewable energy sources, obtained naturally and permanently. In addition to the potential economic benefits of a microhydropower plant are added efficiency, reliability and profitability. ELM Electromontaj Cluj SA contributed significantly to the execution of projects aimed at water recovery. Among the important skills are - the execution of dams (earthworks, anchorages, concrete castings) as well as the construction of hydropower plants - the installation of mechanical equipment (turbines, generators, grills, etc.) - the execution of power evacuation installations and its introduction into the national energy system (power lines, transformer stations, etc.).