"Hydro-electric power plant Tharandt", Saxony; since 1926. Two generator sets with a Francis turbine by Voith, Heidenheim (1926) and a synchronous generator by Sachsenwerk Dresden (1926). Each set has a capacity of 1000 kVA. Wasserkraftwerk 4 means the 4th hydro-electric powerplant of the “Kraftwerke Freital AG”; after Klingenberg, Malter and Rabenauer Grund “Rudelt-plant."