Hydroelectricity in Ukraine
Hydroelectricity in Ukraine is quite developed branch of power engineering. State operating company is Ukrhydroenergo and Energoatom. Design of main power plants is carried out by . General characteristics. In the energy sector of Ukraine, hydroelectric power-plants occupy the third place after thermal (coal and natural-gas) and atomic energy. The total installed capacity of the Ukrainian hydroelectric power stations is currently 8% of the total capacity of the combined energy-system of the country. The average annual output of electric power by hydroelectric power stations is 10.8 billion kWh. The economic and technical potential of the  hydropower resources of Ukraine comprise about 20 billion kWh, and no more than 50% is used. The main used potential is concentrated on the hydroelectric power stations of the Dnipro cascade (capacity - 3.8 GW, output - 9.9 GWh • h): Dnieper Hydroelectric Station, Kiev Pumped Storage Power Plant (HPSP), Tashlyk HPSP. In addition to hydroelectric power plants (HPP) and HPS, 49 so-called small hydroelectric plants operate in Ukraine, producing more than 200 million kWh of electricity. But they have drawbacks: rapid wear of equipment, damage to the structures of a pressure fountain, drainage of reservoirs, insufficient use of means of automation  and control. The main cascades of hydroelectric power stations are the Dnipro cascade and the Dniester cascade. Also there are some unfinished projects on the Southern Bug like (430 MW) Construction has started of the (1000/1040 MW) On Tashlyk Pumped-Storage Power Plant - a third unit is under construction. In 2018 construction started on the second part of the Kakhovka Hydroelectric Power Plant - (250 MW)