Project Manager Eric Wuilloud poses for a picture during a visit to the construction site of the Nant de Drance hydropower plant near the village of Finhaut, close to the border between Switzerland ... more 
Project Manager Eric Wuilloud poses for a picture during a visit to the construction site of the Nant de Drance hydropower plant near the village of Finhaut, close to the border between Switzerland and France in this August 19, 2014 file photo. Deep in a Swiss mountain, workers have blasted out a cathedral-sized hole for a power plant that will help keep Europe's lights on, but the profit outlook for the 1.9 billion Swiss franc ($2.1 billion) project has darkened since its construction began in 2008. The Nant de Drance plant, and others like it, is being undermined by cheap renewable solar and wind energy, which up-ends its business model of pumping water uphill at night when power prices are low and releasing it to make electricity when prices peak in the daytime - a process known as pumped storage. REUTERS/Pierre Albouy/Files (SWITZERLAND - Tags: ENERGY BUSINESS CONSTRUCTION) less 
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Reuters | Photo By PIERRE ALBOUY / REUTERS
Sun, Aug 31, 2014 7:47 AM EDT