The main purpose of this bachelor's thesis is the design of conceptual solution of a small hydroelectric power plant on the river Papradnianka in the Prúdy area and a feasibility assessment of this project. Hydrological data and a selection of the most appropriate type of power plant are revaluated in the first part of this bachelor's thesis. A selection of appropriate technology and individual parts of small hydroelectric power plant are described in the following part. Economic return of this project is assessed in the last part. According to the results of this bachelor's thesis, this project is technically realizable, but the return of investment is big due to current prices of energy