Alstom is to supply four variable speed pump turbine and motor generator units for a new pumped storage power plant in Switzerland.

The engineering firm will provide four 250 MW units for the 1000 MW Limmern facility under a contract valued at EUR178 million. The contract is the second signed this year by Alstom for a variable speed pumped storage plant in Switzerland.

The contract was placed by Kraftwerke Linth-Limmern AG (KLL), a partner of Axpo AG, the largest producer of hydropower and electricity in Switzerland, and the canton of Glarus. It covers design, engineering, manufacturing, installation, testing, commissioning and training services.

“Pumped storage can help Europe meet its target of producing 20 per cent of its electricity from renewable sources by 2020,” said Philippe Joubert, President of Alstom Power. “This technology allows utilities to store excess energy produced by intermittent renewable energy sources such as wind and solar power making it a powerful tool for balancing resources across the grid.”

The equipment for the Limmern plant will be delivered by 2015, according to Alstom, which earlier this year was awarded a EUR125 million contract to equip the 628 MW Nant de Drance power station in Switzerland.