Although LCAs have been widely performed on mono-Si solar PV cells, the potential environmental burden of mono-Si cell production varies considerably (Pacca et al., 2007; Sumper et al., 2011). This condition is mainly attributed to the difference in evaluation methods, data resources, technological level, solar radiation, and other factors (e.g., system boundary, functional unit, and lifetime).Table 4 presents various results on PBTE (years) and GHG emission
(g CO2/kWh) of mono-Si PV systems.