Poyry wins Limmern hydropower plant contract in Switzerland

Finland’s Poyry has been awarded the HVAC design contract for the Limmern pumped-storage hydropower plant under construction in Switzerland, Poyry reported.

The services provided by Poyry comprise the tender process, the detail design and construction supervision for the building equipment and safety facilities. The value of Poyry’s assignment is about EUR 1.7 million (US$2.1 million).

The tender services, starting with a review of the existing design project, will be completed in 2012 with the award of the building equipment contractors’ contracts. The detail design phase will last from spring 2011 to spring 2012. Between 2012 and 2015, Poyry’s construction supervision will make sure that all systems can be put into operation in December 2015.

Kraftwerke Linth-Limmern AG is developing the 1,000-MW Limmern project in Linthal Valley in eastern Switzerland. The plant is being built to provide electricity during periods of peak demand and to help further develop Switzerland’s low-carbon power generation.

The underground powerhouse will contain four 250-MW reversible vertical Francis pump-turbines and four 280-MVa vertical asynchronous motor-generator units. The plant will pump water from the existing Lake Limmern into the existing Lake Mutt. A new gravity dam will be built at the Muttsee Reservoir to increase its storage capacity.

Recently, France’s Nexans was awarded a 13 million Euros (US$17.64 million) contract to supply the power cables for the Limmern pumped-storage hydropower project.

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