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The term "renewable energy source" refers to energy that is both sustainable and infinite, such as the sun. When the word "alternative energy" is used, it usually refers to renewable energy sources as well. It refers to energy sources that are not as non-sustainable as the most regularly utilized non-sustainable sources, such as coal. Renewable energy comes from naturally renewing but flow-limited sources; renewable resources are nearly limitless in terms of length but have a finite amount of energy per unit of time. Renewable energy, often known as clean energy, is derived from natural sources or processes that are renewed on a regular basis. Sunlight and wind, for example, continue to shine and blow despite the fact that their availability is dependent on time and weather. While harnessing nature's power is typically considered of as a novel technology, it has long been used for heating, transportation, lighting, and other purposes. Solar energy comes from the sun, geothermal energy comes from the earth's heat, wind energy comes from the wind, biomass comes from plants, and hydropower comes from flowing water.
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