Renewable energy is derived from natural sources that are continuously replenished, such as sunlight, wind, and water. Solar energy converts sunlight into electricity through **photovoltaic cells** or solar thermal systems. **Wind turbines** harness kinetic energy from the wind to generate electricity. **Hydropower** uses the flow of water in rivers or dams to produce energy, while **geothermal energy** taps into heat from beneath the Earth's surface. **Biomass** energy is produced from organic materials like plants. These technologies rely on sustainable resources, reducing reliance on fossil fuels and minimizing carbon emissions, making renewable energy key to combating climate change.