Valdostana delle Acque Company - Compagnie Valdôtaine des Eaux SpA Privacy | Contacts | Codes of Conduct | Glossary EVENTS-EXHIBITIONS TURNS OF ENERGY FREE APP CVA SCHOOLS BEAUREGARD SHIPYARD WORLD WATER DAY COMMUNICATION PRINT AREA PROVIDERS PUBLICATIONS VISITS PHOTO VIDEO WORK WITH US CONNECTIONS home » water » hydroelectricity HYDROELECTRIC ENERGY INSTALLATIONS Related video Related Photos Hydropower Water, together with the wind and the sun, is one of the main renewable sources from which it is possible to obtain 100% clean energy. How is hydroelectric power produced? Hydraulic energy is an energy from an alternative and renewable source, which uses the potential energy of gravity possessed by a certain mass of water at a certain altitude , available in a basin / reservoir, through successive transformations into: pressure energy , the value of which increases in the penstock connecting the basin / reservoir and the turbine, as a function of the existing height difference; kinetic energy or speed, possessed by the water particle, when it comes out free at the bottom of the penstock under pressure mechanical energyrotation, resulting from the work done by the pressure and / or the speed of the water on the turbine impeller; electric energy , resulting from the rotation of the electromagnetic part, dragged by the turbine, inside the alternator. Hydroelectric energy is taken from rivers and lakes, thanks to the construction of appropriate barriers or dams and then through canals and penstocks brought to the production plants. Power plants fed with water drawn directly from rivers are defined as "flowing water" and transform the amount of water energy available at that time into a quantity of electricity that must be fed into the transport and distribution network , to be used immediately, because electrical energy (in alternating form), unfortunately, cannot be stored. Read everything CVA CVA GROUP WATER WIND SUN CVA IN BRIEF GROUP COMPANY HYDROELECTRIC ENERGY WIND ENERGY PHOTOVOLTAIC ENERGY FINANCIAL DATA FINANCIAL DATA INSTALLATIONS INSTALLATIONS INSTALLATIONS CORPORATE BODIES DEVAL VALDIGNE ENERGIE CVA TRADING CVASpA with single shareholder - CF, VAT number and registration number in the Aosta Company Register 01013130073 - CS € 395,000,000.00 iv © 2006-Copyright CVASpA Via Stazione n. 31 - 11024 Châtillon - Aosta Valley - Italy Design:? B! Conseil - Baratti