Firstly, it is important to make clear the definition of fossil fuels and renewable energy. Fossil fuels can be defined as solid, liquid, or gaseous fuels formed in the ground after millions of years by chemical and physical changes in plants and animal residues under high temperature and pressure. According to Franchi (2005: 72), “renewable energy is energy obtained from sources at a rate that is less than or equal to the rate at which the source is replenished”.
Compared with conventional energy, renewable energy has an impressive long-term potential. Undoubtedly there are environmental concerns with the usage of non-renewable energy. Massive combustion of fossil fuels leads to serious air pollution and global warming, thus posing major health risks coupled with the quick and wide migration of diseases. However, renewable energy offers clean sources that seem much friendlier to the environment. Furthermore, it is widely agreed that renewable energy is more likely sustainable to meet demand in future development other than fossil