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- Dictionaryrenewable energy
noun
- 1. energy from a source that is not depleted when used, such as wind or solar power: "the environmental benefits of renewable energy"
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noun
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Renewable energy is energy from renewable natural resources that are replenished on a human timescale. The most widely used renewable energy types are solar energy, wind power, and hydropower. Bioenergy and geothermal power are also significant in some countries. Some also consider nuclear power a renewable power source, although this is controversial. Renewable energy installations can be large o... Wikipedia