Clean energy denotes the array of fuel options obtained from mostly renewable, low emissions sources such as bioenergy, direct solar energy, geothermal energy, hydropower, ocean energy, and wind energy with minimal impact on the environment or environmentally friendly (IPCC 2011).There are several ways to defining energy efficiency. There is the ecosystem-related approach whereby energy efficiency refers to the capacity to safeguard the integrity of the ecosystem while providing optimum energy services (Omar 2008). Other explanations denote energy efficiency, as the use of minimum energy to supply the same level of energy. It is hence one approach to limit human greenhouse gas (GHG) emissions. Furthermore, energy efficiency quantifies the conversion of energy from one form to another, with no regard for impacts outside the process.