A consortium of Strabag AG, Jäger Bau and G. Hinteregger & Söhne Baugesellschaft has won a contract to provide the tunnel driving works for the Maria Stein pressure flow tunnel of the Gemeinschaftskraftwerk Inn (GKI) power plant along the Swiss-Austrian border region.
Under the contract, the team will construct the remaining 19km (of a total of 22km) of tunnel with a diameter of 6.5m. Crews will use two tunnel boring machines on the project.
Upon completion, the run-of-the-river plant will generate more than 400GWh of electricity. The total investment volume of Gemeinschaftskraftwerk Inn GmbH, including the construction work, is anticipated to cost €460M.
TIWAG has a 76% stake in the project, Engadiner Kraftwerke holds 14% and Verbund has the remaining 10%. Work is being carried out under the overall responsibility of TIWAG.
The power plant is set to commence operations in 2020.
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* Image credit: TIWAG, Innsbruck.