An 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 is called as Renewable Energy. This is in contrast to non-renewable sources such as fossil fuels. Most renewable energy is derived directly or indirectly from the sun. Sunlight can be captured directly using solar technologies. The suns heat drives winds, whose energy is captured with turbines. Plants also rely on the sun to grow and their stored energy can be utilized for bioenergy. Renewable energy often provides energy in four important areas: electricity generation, air and water heating or cooling, transportation, and rural energy services. Edelweiss Applied Science and Technology journal is an open access maintaining high standard quality articles of renewable energy.