Gerlos Reservoir Power Plant

VERBUND’s Gerlos power plant is a reservoir power plant and is situated at the southern end of the locality of Rohrberg in the Ziller Valley, Tyrol. It was constructed in several stages of expansion from 1939 until 2007.

Gerlos power plant lies at the south end of the village of Rohrberg in the Zillertal Valley on the escarpment of the Rohrerberg and is accessed by road from the north.

Gerlos II 

In the second expansion stage, the plant around the Gerlos II powerhouse and a new machine unit with an output of 135,000 kW were enlarged from 2004 to 2007. In this way, the Gerlos power plant's installed capacity has been increased from 65,000 kW to 200,200 kW. 
The "Gerlos II" new construction, connected from the north to the Gerlos power plant, is arranged perpendicularly to the Gerlos powerhouse, at the spot of the old plant entrance. The new powerhouse is composed of three cuboid structures with flat roofs, whose westerly front face borders with the access road to the old powerhouse.

Gmünd Lock

The sealing structure was constructed from 1943 to 1945 and erected as a 37 m high arched wall. Rock slides in 1964 meant that a concrete seal had to be constructed with a 16m high retaining wall. Concrete alterations to the original arched wall meant that a complete renovation was once more necessary in 1991/1993, during which the retaining wall was raised 5m in height and a new service chamber and a new stilling basin constructed. At the same time, the maximum operating level of the Gmünd reservoir was increased by 1 m to 1,191.25. The net capacity is now 0.85 million m3

Technical data:

Owner: VERBUND Hydro Power GmbH
Operating company: VERBUND Hydro Power GmbH                                 
Beginning of operation: 1968
Type:  Storage
Country, State: Austria, Tyrol
Water body: Gerlosbach
Capacity: 25 MW
Annual generation: 26.954 MWh
Turbines: Francis (1)
Fish bypass: no