Green energy refers to energy derived from renewable and sustainable sources such as sunlight, wind, water, and biomass. Unlike fossil fuels, green energy sources produce minimal or no greenhouse gas emissions, making them environmentally friendly. Technologies like solar panels, wind turbines, hydroelectric dams, and bioenergy systems harness these sources to generate electricity and heat. The shift towards green energy is driven by concerns about climate change, energy security, and the depletion of finite resources, prompting investments in research, development, and adoption of clean energy technologies worldwide. Governments, businesses, and individuals are increasingly embracing green energy solutions to reduce carbon footprints and transition towards a more sustainable energy future.