Renewable energy refers to energy derived from naturally replenishing sources that are virtually inexhaustible on a human timescale. Unlike fossil fuels, which are finite and contribute to environmental degradation through pollution and climate change, renewable energy sources can be continuously replenished and are generally considered cleaner and more sustainable. Some common examples of renewable energy sources include: Solar energy: Captured from sunlight using photovoltaic cells or solar thermal collectors. Wind energy: Generated by harnessing the kinetic energy of wind through wind turbines. Hydroelectric energy: Produced by capturing the energy of flowing water, typically through dams and turbines. Biomass energy: Derived from organic materials such as wood, agricultural residues, or municipal solid waste. Geothermal energy: Harvested from the Earth's heat stored beneath the surface, often through geothermal power plants or geothermal heat pumps. Tidal energy: Generated by harnessing the energy of ocean tides through tidal turbines. These renewable energy sources offer numerous environmental, economic, and social benefits, including reduced greenhouse gas emissions, improved energy security, job creation, and increased energy access in remote or rural areas.