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Renewable energy or renewable energy is the energy from continuous sources which according to human standards are infinite such as solar, wind, rain, tide, wave and geothermal. The basic principle of the use of renewable energy is to separate a portion of the energy from processes that are continuously evolving in the environment and put into technical uses. These processes are often promoted especially from the Sun. Renewable energy replaces traditional fuel sources in four areas: electricity generation, hot water heating, engine fuel, and independent rural electricity systems.Approximately 16% of global electricity consumption comes from renewable sources, with 10%  of all traditional biomass energy, mainly used to provide heat, and 3.4% from hydroelectric. New sources of renewable energy (small hydro, modern biomass, wind, solar, geothermal, and biofuels) account for an additional 3% and are growing rapidly. At the national level, at least 30 countries around the world have used renewable energy and provided more than 20% of their energy needs. The national renewable energy markets are expected to continue to grow strongly over the next decade and beyond. For example, wind energy is growing at a rate of 30% per year, with global installed capacity of 282,482 (MW) by the end of 2012.

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