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Content: Winter brings skiing, winter climbing, snow boarding and people
  wanting a 'traditional' Christmas with snow, sleighs and fir trees. Many winter
  resorts have been built specifically for tourism, such as Les Deux Alps and
  Val d'Isere, whilst others have adapted over time, such as Chamonix, Val Ferret
  and Grindelwald. Most winter resorts have a well developed summer tourist industry
  too. Power Generation in Fold Mountains 
The steep slopes and warm summers
  when glacial melt water is plentiful make the Alps ideal for the production
  of electricity through Hydroelectric power plants (HEP). The guaranteed electricity
  supply has attracted industries that need cheap and plentiful electricity,
  such as aluminium smelting, specialist metal products and electro-chemical
  plants. Amazingly, the first HEP system was installed in Switzerland in 1878,
  when a turbine in a stream produced power to light the dining room of the Palace
  Hotel in St. Moritz . HEP took of after the Second World War when it became possible
  to transmit the power over long distances and produce more and more power from
  better power plants. Today, almost two thirds of Switzerland's electricity
  comes from HEP. Hydro-electric power has important ecological advantages
  because it doesn't produce air pollution, greenhouse gases or waste products.