Essentially, the construction project includes the diversion of several water courses from the upper Stubaital and central Ötztal with a gallery length of 25.5 km, the construction of the Kühtai reservoir in the upper Längental with a usable volume of approx. 31 million m³ and a 113 m high natural stone fill dam with a central earth core seal, and the construction of an underground pumped storage power plant “Kühtai 2 power plant” between the new Kühtai reservoir and the existing Finstertal reservoir. The additional annual production will be 216 million kWh.
Location: Kühtai, Tyrol; Austria
Client: TIWAG (Tiroler Wasserkraft AG)
Commissioned by: JV SWK Kühtai (Swietelsky – Jäger – Bodner)
Performance period: since 2021
Together with a JV partner company, we are responsible for carrying out the entire construction and heading survey for the construction of the tunnels, caverns and the fill dam, the geotechnical measurements and the supply of instrumentation for the underground structures.