Arnstein Storage Power Plant

VERBUND's power plant at Arnstein is a storage power plant and situated in the lower Teigitschgraben trench near the town of Gaisfeld in the vicinity of Krottendorf in Styria. It was built from 1922 until 1925.

Technical Description 

In 1922 to 1925, the annual storage power plant in Arnstein was constructed along with the daily storage power plant of Landmann. The maximum water level of the Langmann reservoir is 630.5 m and has a net capacity of 0.32 million m3. The reservoir is sealed off via a 26m high gravity dam.

The works water conductor comprises a 5.25 km long headrace tunnel, a water lock and two 690m long armoured pressurised pipeline. In 1931, the power plant was extended with 3 machine units with horizontal shafts and a total capacity of altogether 30,000 kW. Each one of the 3 machine units comprises 1 Francis spiral turbine and 1 synchronous generator.

Technical data:

Owner: VERBUND Hydro Power GmbH
Operating company: VERBUND Hydro Power GmbH                                 
Beginning of operation: 1925
Type:  Storage
Country, State: Austria, Styria
Waters: Teigitsch
Capacity: 30 MW
Annual generation: 49.146 MWh
Turbines: Francis (3)
Fish bypass: no

Querschnitt VERBUND-Kraftwerk Arnstein
Cross-section of the Arnstein storage power plant