Application of renewable energy technologies (RETs) for rural electrification is
increasing in recent years, but is not very widespread. As an option for providing power,
solar photovoltaic (PV) is gaining popularity, though its high initial cost is a major barrier
for its widespread use. A photovoltaic system costs about 4000$/kW, while the cost of
conventional power system such as oil, gas and coal is approximately four times lower
[7,8]. Thus, though PV is little far from being economic in comparison with conventional
fossil fuel to provide electricity [9,10], they are used in remote areas where it is
uneconomical to extend the electric grid