The first chart to the right shows the meteo station data (irradiance and ambient temperature) for October 2020. A new mono PERC, monofacial module from JA Solar (JAM60S10-345/MR) was added to the outdoor test array at the beginning of October. After operating for approximately a full month, its energy yield performance was added to this month’s results.
Beginning this month, the energy yield comparison between technologies, including bifacial boost, will be analyzed using products installed after the beginning of 2019. This is to eliminate the influence of the performance degradation from the older modules on the results. Using this new approach, the average bifacial boost is 6.0% for October 2020. Bifacial boost is defined as the extra energy yield of the bifacial products compared to the average energy yield of all mono-facial mono PERC products.
The chart to the bottom right shows the comparison between different PV module technologies for October 2020. Cast mono PERC is categorized as a “standard multi” product for this comparison. Bifacial modules are steadily performing above all the other technologies, with multi-crystalline silicon PV having the lowest yield.
Notes on the energy yield measurements:
- The energy yield is given in Wh/Wp and calculated by dividing the energy produced by the module by the Pmax at STC of the module. This Pmax is the maximum STC power after a process of stabilization.
- The results are grouped in categories, per module type.
- The bifacial boost depends on many parameters: the bifaciality factor, the installation geometry, the albedo of the ground, and the sun angle and diffuse irradiance. The ground, in this case, is gray gravel.
We are pleased to present the next batch of energy yield results from the outdoor test field in Xi’an, China. In this edition, we present the October 2020 results, alongside analysis from George Touloupas, director of technology and quality at CEA.
pv magazine test is a cooperative effort involving pv magazine, CEA and Gsolar. All testing procedures are carried out at Gsolar’s test laboratory in Xi’an, China. CEA supervises these tests and designed both the indoor and outdoor testing procedures.
|all in Wh/Wp||Total Jul 2020||Total Aug 2020||Total Sep 2020||Total Oct 2020|
|Average monthly yield||83.52||107.57||103.07||64.13|
|Average monthly bifacial yield||88.57||112.96||107.65||66.63|
|Average monthly monofacial Mono PERC yield||81.74||105.39||101.26||62.83|
|Average daily yield||3.34||3.59||3.82||2.07|
|Average daily bifacial yield||3.54||3.77||3.99||2.15|
|Average daily monofacial yield||3.27||3.51||3.75||2.03|
|Energy yield ranking|
Jul 2020 Wh/Wp
Aug 2020 Wh/Wp
Sep 2020 Wh/Wp
Oct 2020 Wh/Wp
|July 2020 rank||Aug 2020 rank||Sep 2020 rank||Oct 2020 Rank|
|18||LONGi LR6-60BP-300M||Bifacial Mono PERC||91.21||116.40||111.00||69.96||1||2||2||1|
|26||LONGi LR6-72HBD375||Bifacial Mono PERC||91.07||116.50||111.18||68.72||2||1||1||2|
|17||NSP D6L310L3A||Bifacial Mono PERC||88.02||112.19||107.16||67.90||5||5||4||3|
|1||Jolywood JW-D60N-305||Bifacial N-PERT||88.18||112.27||106.80||67.14||4||4||5||4|
|27||JW-D72N-400||Bifacial Mono N-TOPCon||88.75||113.05||107.42||66.77||3||3||3||5|
|16||LONGi LR6-60PE-310M 2||Mono PERC||83.84||108.00||103.85||65.27||7||6||6||6|
|28||Risen RSM114-6-405BMDG||Bifacial Mono PERC||84.19||107.34||102.38||64.41||6||7||8||7|
|20||Phono PS380MH-24/TH||Mono PERC||82.76||106.64||102.50||64.18||8||8||7||8|
|14||Sample 2||Mono PERC||81.97||105.44||101.48||63.92||11||12||12||9|
|21||Risen RSM120-6-320M||Mono PERC||82.26||106.09||101.81||63.87||10||11||11||10|
|31||JA JAM60S10-345/MR||Mono PERC||–||–||–||62.60||–||–||–||15|
|2||Phono MWT-60-280||Multi MWT||80.76||104.17||100.20||62.59||16||15||15||16|
|12||NSP D6LM305E3A||Mono PERC||79.96||102.70||98.54||62.15||18||18||18||18|
|29||CSI CS3U-390MS||Mono PERC||81.67||106.54||102.25||62.04||12||9||9||19|
|4||Perlight PLM-300M-60||Mono PERC||79.73||102.33||98.36||61.84||19||19||19||20|
|30||Sample 3||Cast Mono PERC||78.90||–||–||61.64||20||–||–||21|
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