A renewable energy source is a type of energy that is derived from natural processes that can be replenished over time. Unlike non-renewable energy sources, such as fossil fuels, which are finite and will eventually be depleted, renewable energy sources can be continuously replenished and are considered to be more sustainable.

Some examples of renewable energy sources include solar energy, wind energy, hydroelectric energy, geothermal energy, and biomass energy. These sources of energy are typically cleaner and have a lower environmental impact than non-renewable energy sources, which often emit greenhouse gases and contribute to climate change.

Renewable energy sources are becoming increasingly important as countries around the world seek to reduce their carbon emissions and transition to more sustainable energy systems. Many governments are implementing policies and incentives to encourage the development and use of renewable energy, and the renewable energy industry is rapidly growing as a result.