Mittweida pumped storage plant
The Mittweida pumped storage power plant (or Pumped Storage Plant (PSW) Mittweida ) went into operation on June 21, 1928 and had an output of 2250 PS = 1650 kW (= 1.65 MW). It is located near Mittweida in the Free State of Saxony and is now out of service.
The pumped storage power plant was built on the existing run-of-river power plant. The upper basin was built between Rossau and Seifersbach with an earth wall. The Zschopau, which was dammed up by a 4.2 m high weir, served as the lower basin for the run-of-river power station . The 2.1 km long pipe from the upper basin to the power plant had a diameter of 1.25 meters and consisted of wood in the upper section and steel in the lower section. Due to increasing wear and tear and after an accident in which the power plant building was flooded with water from the pressure pipe, the pumped storage power plant was shut down in 1988. The run-of-river power plant on the Zschopau was repaired and is in operation.
Structural data upper basin
The barrier structure of the upper basin is a ring dam.
- Crown height: 340 m above sea level NN, according to other information: 344 m above sea level. NN
- Height above valley floor: 5 m
- Crown length: 785 m
- Crown width: 2.5 m
- Storage space: 130,000 m³, according to other information: 145,000 m³
- Storage surface: ...
- Fall height: 115–120 m
Run-of-river power plant
The following information is available for the run-of-river power plant:
- Fall height: 4.2 m
- Power: 956 kW
- Generator power: 1430 kW
- Annual work: 3 to 3.5 million kWh
- Construction time: 1919–1923
- Completion of the turbines: 1921
- 1. Commissioning: 1923
- Recommissioning: 1991
- Energieversorgung Südsachsen AG, Chemnitz, University of Applied Sciences Mittweida (FH), Mittweida City Administration (ed.): Mittweida power plant ... at the source of electricity , 1998.