Alternative Energy or Renewable Energy

Renewable energy is energy that is collected from renewable resources, which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat. Renewable energy often provides energy in four important areas: electricity generation, air and water heating/cooling, transportation, and rural (off-grid) energy services. The use of these sources contributes to the more efficient use of their own potentials in energy production, reduction of greenhouse gas emissions, reduction of fossil fuel imports, development of local industry and job creation.