Renewable energy is energy that comes from sources that can never be used up or run out. This type of energy comes from things like the wind, the sun, water, and plants. These sources of energy never run out because they are constantly kept up or renewed. For example, wind keeps on blowing, the sun keeps on shining, water keeps on flowing, and plants keep on growing. Because of this, the renewable energy industry is focused on creating technology to capture this natural energy and use it to power houses and businesses.