Derived from natural processes that are constantly replenished, green energy sources are not only renewable and sustainable but also they have morphed into a feature of modern life. These sources include sunlight, wind, rain, tides, and geothermal heat. Green energy sources are mainly used for three purposes: generation of electricity, human survival in the form of domestic heating or industrial energy production, fuel for transportation. Technological features vary greatly depending on the type of energy. For instance, there are photovoltaic cells used in solar power, wind turbines to harness wind power, and hydroelectric dams employing water power. These technologies are designed to minimize environmental impact while maximizing efficiency. Applications of green energy are widely distributed. Solar panels power individual homes, and wind farms of massive proportions provide energy for entire communities. Green energy demonstrates its potential with countless applications at every level-- from individual consumers to entire nations that rely entirely on it.