Global technical engineering consultancy Enertis Applus+ has published an in-depth analysis of a 47MW single-axis tracker photovoltaic (PV) project in Seville, Spain, which compares the commercial performance of back-contact (BC) and tunnel oxide passivated contact (TOPCon) technologies. Energy Yield Assessments (EYA) were performed using module data provided by LONGi. The findings indicate that LONGi’s HPBC2.0 modules, Hi-MO 9, significantly exceed TOPCon alternatives in terms of power generation efficiency, cost management, and levelized cost of electricity (LCOE), thereby offering strong technical validation for utility-scale solar projects globally.
Key Findings:
-3.4% Higher Energy Yield per Watt*: Hi-MO 9 generated 2,209 hours of operation in its first year—2.4% to 3.4% more than TOPCon equivalents—directly enhancing project revenue.
– Cost Parity Despite Premium Pricing*: With Hi-MO 9 priced at just 0.7¢/W higher than TOPCon, the total capital expenditure (CAPEX) remained comparable due to optimized system design and cost structures.
-Industry-Leading LCOE Reduction*: Hi-MO 9 achieved an LCOE of €0.02706/kWh, which is 3.92% to 4.47% lower than that of TOPCon modules. The cost advantages arise from reduced fixed cost allocation per unit of energy due to higher yield and variable cost compression through improved tracker compatibility and decreased electrical losses.
The study highlights BC technology’s distinctive ability to enhance lifetime return on investment through synergistic effects of efficiency gains + cost control. By significantly reducing electricity production costs, Hi-MO 9 allows solar assets to compete more effectively in global energy markets while advancing decarbonization initiatives.
Source: LONGi
