If only productivity is considered the best solution is

Table 6.
Influence TG100-115 soiling on PV plants PRe.PV technologyInitial PRePRe variation every 30 days without PV module cleaningPlant A – HIT85.3%−0.03%Plant B – poli c-Si83.2%−0.06%Plant C – CdTe84.8%−0.07%Plant D – a-Si/μc-Si91.4%−0.38%Full-size tableTable optionsView in workspaceDownload as CSV
3.3. Economic assessment
Table 7.
LCOE of each PV plants.PV technologyLCOE [€/kWh]Plant A – HIT0.129Plant B – poli c-Si0.135Plant C – CdTe0.174Plant D – a-Si/μc-Si0.133Plant E − poli c-Si with solar tracking0.154Plant F – GaAs with Fresnel lens0.336Electricity price for household0.229Full-size tableTable optionsView in workspaceDownload as CSV
Fig. 9. NPV trend for each PV plants as a time function. NPV is cellulose computed taking into account the 50% tax deduction in ten years of the initial investment, except for the dotted curve, which is computed for plant A (HIT technology) without considering the tax deduction.Figure optionsDownload full-size imageDownload as PowerPoint slide