Thirdly, another benefit of renewable energy is a diversified energy mix (Pasolini 2012).
It is an important and necessary supplement for global energy security while fossil fuel sources are more and more running out.
Essence of RES is derivation from natural processes so the energy is sustainable and never run out.
Truly, renewable energy is really important and necessary to human beings when fossil fuels are more and more exhausted.
Finally, renewable energy not only is regarded as an unlimited resource but also plays an important role to regional development.
Renewable energy and energy efficiency can help revitalize rural communities (Parker 2010).
The initial costs of renewable energy still make many people ignore it completely when comparing it with fossil fuel on two aspects: total cost and over the same time period.
For example, installation of solar energy water heater costs many times in comparison with a heater, so they decided to buy heaters for hot water solution.
For example, wind turbines or solar panel systems can provide energy and provide rural communities with new tax revenue.
Farmers on windy lands can lease space to wind developers, earning thousands of dollars for each turbine every year.