Huasun Energy, a pioneer in HJT cell technology, has shared a comparative lifetime PVSYST simulation data analysis between the Everest series HJT, TOPCon, and PERC module over a color-coated steel sheet flat roof installation. This simulation was conducted over a 4.8 MW (AC) capacity rooftop PV installation, featuring the 2,382 x 1,134 mm Huasun Everest 210R-132 HJT series 620 W modules installed in a 2P, vertical configuration in China’s Shenzen, Guangdong Province. The same simulation was repeated with 600 W TOPCon and 555 W PERC modules of the same dimensions.
According to the simulation data, the plant equipped with HJT modules achieved a DC installed capacity of 5.9892 MW and a DC overloading ratio of 1.25. In contrast, the plant using TOPCon and PERC modules could only accommodate 0.1932 MWp and 0.3948 MWp lower DC installed capacities, respectively. The DC/AC overloading ratios for the TOPCon and PERC configurations were 1.21 and 1.17, respectively. Huasun stated that the higher installed capacity and additional DC overloading with the HJT modules result in greater energy generation compared to the TOPCon and PERC modules.
Huasun further observed that its 620 W HJT modules provided an additional 24 hours of generation in the first year of field exposure compared to the 600 W TOPCon modules, leading to a total of 948.24 extra hours over 25 years. In contrast, the PERC module configuration delivered 62 hours less generation in the first year, amounting to 2,316.98 fewer hours of generation over 25 years. This additional generation over the HJT module's 25-year lifecycle translates into 24,981.94 kWh of extra energy compared to PERC modules and 11,738.04 kWh more than TOPCon modules. Huasun attributes this improved performance to the higher reliability, lower degradation rate, greater efficiency, and higher power output of its HJT modules compared to the other technologies. According to the company, the higher reliability and lower degradation of its HJT modules can be attributed to the HJT cell’s unique structure and low-temperature fabrication process, resulting in minimum light-induced degradation (LID) and higher anti-UV characteristics.
Following an LCOE analysis over the 25-year project lifecycle, Huasun's HJT modules achieved the lowest LCOE at 0.2842 $ cents/W, compared to 0.2925 $ cents/W for TOPCon and 0.3026 $ cents/W for PERC modules. Additionally, Huasun reported that the balance of system (BOS) costs for its 620 W HJT modules were 0.27 $ cents/W lower than those for the 600 W TOPCon modules and 0.74 $ cents/W lower than those for the 555 W PERC modules in the same color-coated steel sheet roof project.
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