Under the order, Voith will provide electro-mechanical equipment for the 2×37.5MW generating units of the power plant until mid-2017.
The company will also be responsible for the delivery of the accompanying spherical valves, overhaul of the spiral cases and draft tubes, and erection and commissioning of the plant.
The modernization contract is expected to boost the performance of the Polpitiya hydropower plant, which was commissioned in 1969, as well as increase the reliability of electricity production in Sri Lanka.
CEB operates power plants with a total installed capacity of 3.4GW. It develops and maintains a coordinated system of electricity supply in Sri Lanka.
Earlier this week, Voith Hydro was selected to modernize three hydro power facilities in Italy.
Under a €16m contract signed with ACEA, Voith Hydro will modernize the Alessandro Volta plant in Castel Madama, Rome province, by mid 2016.