Kraftwerke Oberhasli AG Grimselstrasse

Innertkirchen, Switzerland

Kraftwerke Oberhasli AG Grimselstrasse

Innertkirchen, Switzerland

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Schweizer S.,Kraftwerke Oberhasli AG Grimselstrasse | Schmidlin S.,Limnex AG | Bieri M.,Pöyry | Busser P.,Fischereibiologe | And 7 more authors.
WasserWirtschaft | Year: 2016

With the planned extension of the hydropower station in Innertkirchen by the Kraftwerke Oberhasli AG the maximum possible outflow from the turbines into the Hasliaare will increase from 70 m3/s to 95 m3/s. For the identification of realistic measures to mitigate hydropeaking effects on aquatic organisms a comprehensive study has been successfully performed. The ecological deficit analysis of the actual state of the river as well as an evaluation of the mitigation measures was conducted with the support of an expert team and a group of representatives of the Federal Office for the Environment and the Cantonal Office of Water and Waste (Bern). The spectrum of mitigation measures was evaluated based on the actual state of the art. The construction of a storage volume of 80 000 m3 between the power plant and the downstream outlet showed the best cost-benefit ratio. The construction started in spring 2013.

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