Renewable energy, often referred to as clean energy, comes from natural sources or processes that are constantly replenished. For example, sunlight or wind keep shining and blowing, even if their availability depends on time and weather.
Why is renewable energy called alternative energy?
Renewable energy is energy that is generated from natural processes that are continuously replenished. … Generally, it indicates energies that are non-traditional and have low environmental impact. The term alternative is used to contrast with fossil fuels according to some sources.
Why is alternative energy?
Renewable energy provides reliable power supplies and fuel diversification, which enhance energy security and lower risk of fuel spills while reducing the need for imported fuels. Renewable energy also helps conserve the nation’s natural resources.
What are the advantages of alternative energy?
Advantages of Alternative Energy
- Environmental benefits. Low or zero carbon emission is without a doubt the main advantage of alternative energy over fossil fuels. …
- Increased energy security. Fossil fuels are unequally distributed and make the global economy dependent on a few exporting countries. …
How is alternative energy used?
All sources of renewable energy are used to generate electric power. In addition, geothermal steam is used directly for heating and cooking. Biomass and solar sources are also used for space and water heating. Ethanol and biodiesel (and to a lesser extent, gaseous biomethane) are used for transportation.
Which power source is most efficient?
Although there are many types of energy, the most efficient forms are renewable: hydro-thermal, tidal, wind, and solar. Solar energy has been proven to be the most efficient and effective among renewable energy sources for home and commercial use.