December 2012
Intermediate to advanced
384 pages
9h 51m
English
Renewable energy is energy that comes from natural resources such as sunlight, wind, rain, tides, and geothermal heat, which are renewable (naturally replenished).
Renewable energy flows involve natural phenomena such as sunlight, wind, tides, plant growth, and geothermal heat. As the International Energy Agency (IEA) explains:
Renewable energy is derived from natural processes that are replenished constantly. In its various forms, it derives directly from the sun, or from heat generated deep within the earth. Included in the definition are electricity and heat generated from solar, wind, ocean, hydropower, biomass, geothermal resources, and biofuels and hydrogen derived ...
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