Renewable resources are natural resources that can replenish themselves over time or exist in finite amounts that can be regenerated through natural processes. These resources can be used without worry that they will be depleted permanently. Renewable resources can be categorized into two types: flow resources and stock resources. Flow resources are those that are replenished through natural processes, such as solar, wind, and water power. Stock resources are those that can be depleted but can be regenerated through natural processes, such as forests and fisheries.
Examples of renewable resources include:
- Solar energy
- Wind energy
- Water energy
- Geothermal energy
- Biomass
Renewable resources can be used to produce renewable energy, which is energy derived from natural sources that are replenished at a higher rate than they are consumed. Renewable energy sources can be used for electricity generation, space and water heating and cooling, and transportation. The United States is a resource-rich country with abundant renewable energy resources, such as solar, wind, and geothermal energy. Using renewable energy can help to reduce energy imports and reduce fossil fuel use, which is the largest source of U.S. carbon dioxide emissions.