Hydropower facilities / Hydropower plants (HPP)

Dniester HPP-1

Dniester HPP-1 (built during 1975-1983) - the second of five hydropower plants that were stipulated by "Scheme of complex usage of water resources of the Dniester River". The main feature of the hydro scheme is a powerhouse of run-of-river type at high head (up to 55 m) that has the spillways above the turbine hall. Such feature allowed avoiding the construction of separate spillway dam.

Since 1996, the complex rehabilitation of HPPs operated by Ukrhydroenergo PJSC has started.  The rehabilitation included reconstruction and replacement of hydropower, electrical, and auxiliary, mechanical and sanitary equipment of the HPPs. From 1997 till 2002 the first stage of rehabilitation was completed; and in 2006 the second stage of rehabilitation started.

The main goals of rehabilitation were to extend the operational period of the hydropower plants, to increase their capacities, output, reliability and safety, to fulfill the requirements of environmental protection, to improve the quality of electricity produced due to the improvement of control system, to create modern working conditions that meet current regulations.

During the 1st stage of rehabilitation generator circuit breakers were installed. Furthermore, circuit breakers of 100 kV and 330 kV were partially reconstructed and also the systems of units control and protection were replaced.  Other remaining electrical and auxiliary out-dated equipment are being reconstructed at the 2nd stage.

Scope of work envisaged under the contracts:

  • rehabilitation feasibility study (Iand II Stage);
  • rehabilitation program elaboration for rehabilitation design of the HPP
  • rehabilitation design of the HPP;
  • approval of technical part of bid documents for equipment supply;
  • detailed design engineering on equipment renovation and hydro structures reconstruction;
  • co-ordination of design solutions on civil work and on technological equipment modernization;
  • design supervision over rehabilitation.

Main features of the project

Installed capacity, MW


Unit type:


Number of units:


Max head, m


Mean annual output, mil. kWh


Discharge, m3/s


Live storage, km3


Surface area of the reservoir at NWL (normal water level), km2


Surface area of the reservoir at DWL (dead water level), km2:


The hydro scheme consists of: power house combined with the spillway, erection bay, water-race conjugations, downstream pavements, rock and earth fill dam