Renewable energy, often referred to as clean energy , comes from natural sources or processes that are constantly replenished. For example, sunlight or wind keep shining and blowing, even if their availability depends on time and weather.

Renewable energy systems provide energy from sources that will never deplete.Renewable energy systems produce less greenhouse gas emissions than fossil fuel energy systems.


  • Wind energy
  • Solar energy
  • Hydraulic or hydroelectric energy
  • Biomass and biogas
  • Geothermal energy
  • Tidal energy
  • Wave energy
  • Bioethanol
  • Biodiesel