“…It is also influenced by the typical characteristics of the technology, such as efficiency, annual production, service life, and the nature of the energy source utilized. In Figure 4, the average cost of electricity generation for coal, NG and nuclear are comparable at a value of around 0.05 USD/kWh, for wind and biomass it is almost doubled, whereas for CSP and PV, it is particularly very high of 4 and 6 times the average values of coal, respectively [15,[41][42][43]45,46,48,59]. Surprisingly, we found in the literature [41] a wide value range for PV which again reflects the different designs and technological features.…”