Rioni HPP is a diversion type hydro power plant. The plant uses water courses of the rivers Rioni and Tskhenistskali. Headwork of the plant is located on the territory where the river Rioni enters Kutaisi and its power unit is located near the territory of the railway station “Rioni”. The plant was put into operation in 1933. Its installed capacity is 49,85 MW and average annual capacity is 314 GWh.