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Water is one of the oldest sources for the production of energy. It is a renewable, abundant and clean source. Today, hydroelectric power accounts for a little over 2% of the world power demand (energy used  directly + energy transformed into other energy products + electric power produced in power stations) and 14% of the electric power used worldwide is obtained from 800,000 operating dams, out of which 45,000 are over 15 metres high. Worldwide, reservoirs occupy a total area of 300,000 sq. km, an area as big as Italy. For many countries, hydroelectric power is an extremely important source for the production of electric power. In Norway 96.7% of the production of electric power is hydroelectric, in Brazil 75.2%, in Venezuela 64.8% and in Canada 60%.
(Data source: International Energy Agency (IEA) – Key World Energy Statistics 2014)

subjects dealt with in Hydroelectric

energia_400x225_0046_conoscere l'idroelettrica

Hydroelectric knowledge

The water cycle, triggered by the evaporation of the Earth’s water, the formation of clouds and rain, provides mankind with…

energia_400x225_0043_gli impianti idroelettrici

Hydroelectric plants

The main concept hydroelectric plants are based on is to transform the potential energy of resting mass of water and/or…

energia_400x225_0045_energia dai ghiacciai

Energy from the glaciers

Most of the mountain regions in areas with a humid and temperate climate, including Italy, have a high production of…

energia_400x225_0044_energia dal mare

Energy from the sea

Theoretically it is possible to convert at least five types of energy that are present in the sea: the current,…

energia_400x225_0047_ambiente e territorio

Environment and territory

Just like other types of renewable sources, hydroelectric energy is characterised by remarkable advantages as compared to the production of…

special reports

  • rinnovabiliItalia

    21 April 2015 / Energy

    Renewable energy in Italy

    Renewable energy sources in Italy The GSE, Energy Services Operator, periodically publishes data and statistics on the renewable sources used…

    impronta_idrical

    26 February 2014 / Water

    How much water is on your plate?

    Still waters run deep! This proverb reminds us how many times we have heard popular proverbs about water, and how…

    oro_blu

    15 April 2014 / Water

    How rich are we .... in blue gold?

    The blue planet: water availability in the world 24 December 1968, a date of historical importance. The Earth was photographed…

  • Green maple leaves

    18 May 2011 / Energy

    Artificial photosynthesis

    Science is inspired by nature The history of science and technology is packed with discoveries and inventions inspired by nature.…

    carbon_foot

    23 October 2013 / Air

    Carbon Footprint

    CO2 emissions and lifestyles If your parents decide to buy a new car, they might be attracted by a car…

    piccoli_passi

    13 May 2013 / Earth

    Small steps, great footprints

    Which one takes up more space, an apple or a steak? Have you ever wondered how much space is taken…

  • 7miliardi

    27 September 2012 / Life

    Over 7 billion people on Earth

    World population hits 7 billion Demographers have estimated that on 31 October 2011 world population reached the 7 billion mark,…

    chimicaverde

    22 May 2012 / Energy

    Green chemistry

    A bit of history Chemistry accompanies man from that day long ago when coarse hands full of hope put out…

    certificazione

    21 July 2015 / Energy

    Farewell energy certification, the new Energy Performance Certificate is coming

    On 1 October, the new Energy Performance Certificate (EPC) will come into force. Below are the most important innovations.The main…

  • rinnovabiliItalia

    21 April 2015 / Energy

    Renewable energy in Italy

    Renewable energy sources in Italy The GSE, Energy Services Operator, periodically publishes data and statistics on the renewable sources used…

    impronta_idrical

    26 February 2014 / Water

    How much water is on your plate?

    Still waters run deep! This proverb reminds us how many times we have heard popular proverbs about water, and how…

  • oro_blu

    15 April 2014 / Water

    How rich are we .... in blue gold?

    The blue planet: water availability in the world 24 December 1968, a date of historical importance. The Earth was photographed…

    Green maple leaves

    18 May 2011 / Energy

    Artificial photosynthesis

    Science is inspired by nature The history of science and technology is packed with discoveries and inventions inspired by nature.…

  • carbon_foot

    23 October 2013 / Air

    Carbon Footprint

    CO2 emissions and lifestyles If your parents decide to buy a new car, they might be attracted by a car…

    piccoli_passi

    13 May 2013 / Earth

    Small steps, great footprints

    Which one takes up more space, an apple or a steak? Have you ever wondered how much space is taken…

  • rinnovabiliItalia

    21 April 2015 / Energy

    Renewable energy in Italy

    Renewable energy sources in Italy The GSE, Energy Services Operator, periodically publishes data and statistics on the renewable sources used…

  • impronta_idrical

    26 February 2014 / Water

    How much water is on your plate?

    Still waters run deep! This proverb reminds us how many times we have heard popular proverbs about water, and how…

  • oro_blu

    15 April 2014 / Water

    How rich are we .... in blue gold?

    The blue planet: water availability in the world 24 December 1968, a date of historical importance. The Earth was photographed…

from the Multimedia section

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curiosities

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