What Is Renewable Energy?

Renewable energy systems use resources that are constantly replaced and are usually less polluting. Examples of renewable energy systems include solar, wind and geothermal energy (getting energy from the heat in the earth). We also get renewable energy from trees, plants, rivers and even garbage. For more discussion about the difference between renewable and nonrenewable energy click.

Renewable Energy Sources
What Is Renewable Energy?
Solar Energy
Photovoltaic Energy



Go to TOPIC 3. Environmental Costs of Energy