The fossil fuel burning is the main culprit behind global warming 
which resulted in greenhouse gases (GHG) emissions led by 
carbon dioxide (CO2) emission, key contributor to environmental 
pollution . The rising CO2 emissions intensity and global 
warming complexities have raised the importance to focus on 
alternative energy generation options. The serious concerns over 
fossil fuel consumption, issue of energy security, and GHG 
emissions challenges have brought attention to clean energy 
sources among public and policy analysts as well.