Renewable Energy Sources Defined
What is renewable energy? Also called “alternative energy,” these are sources that are used as an alternative to fossil fuels, like oil and coal. Renewable energy sources are replenished naturally by the Earth. Some examples include: thermal energy from the sun, electric production from wind turbines, and electric production from dams.
The sun, wind, and water on Earth never run out. By developing systems to use these naturally replenished resources, alternative energy can be developed.