pv magazine test: August 2022 results


The average bifacial boost is 11.17% for August 2022. Bifacial boost is defined as the relative advantage of the average specific energy yield of all bifacial products compared to the average specific energy yield of all mono-facial mono PERC products.

The chart (bottom right) shows the relative specific energy yield comparison between different PV module technologies. Although the top performer is Longi’s bifacial PERC module, the average specific energy yield of the bifacial TOPCon category leads over the average specific energy yield of modules in the bifacial PERC category.

Our test field only has one sample from Jolywood in the n-TOPCon bifacial category. As TOPCon modules become more prominent, we look forward to installing more samples of this type to achieve a more representative yield comparison.

Notes on the energy yield measurements:

  • The energy yield comparison among various technologies, including bifacial boost, will be analyzed using products installed after the beginning of 2019.
  • 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 grey gravel.

Bifacial boost
All in Wh/WpTotal May 2022Total June 2022Total July 2022Total August 2022
Average monthly yield155.23154.20137.53128.72
Average monthly bifacial yield166.49168.17149.25139.88
Average monthly monofacial Mono PERC yield152.59151.37135.03125.82
Operation days31282631
Average daily yield5.015.515.294.15
Average daily bifacial yield5.376.015.744.51
Average daily monofacial yield4.925.415.194.06
Bifacial boost9.11%11.10%10.53%11.17%
Specific energy yield ranking – historical
#Installation MonthProductTypeTotal
May 2022 Wh/Wp
June 2022 Wh/Wp
July 2022 Wh/Wp
Aug 2022 Wh/Wp
May 2022 RankJune 2022 RankJuly 2022 RankAugust 2022 Rank
262019/8/28LONGi LR6-72HBD375Bifacial Mono PERC171.167172.432153.929143.9151311
272019/12/31Jolywood JW-D72N-400Bifacial Mono N-TOPCon170.928173.220153.574143.5482222
372021/5/1LONGi LR4-72HBD-445MBifacial Mono PERC170.713173.319153.487143.5093133
382021/11/20LONGi LR5-72HBD-535MBifacial Mono PERC164.388166.206147.721139.0525444
282020/4/15Risen RSM114-6-405BMDGBifacial Mono PERC164.641165.755147.624137.9744555
322021/7/1Risen RSM150-8-500BMDGBifacial Mono PERC160.757162.458142.747136.0527776
34*2021/7/1JA JAM72D20-445MBBifacial Mono PERC162.825163.816145.656135.0826667
29*2020/7/7CSI CS3U-390MSMono PERC155.486156.056139.663131.2468888
302020/7/7GCL GCL-M3/72H380Cast Mono PERC155.459155.930139.631131.0259999
31*2020/10/1JA JAM60S10-345/MRMono PERC155.189616153.828138.027130.66011111010
202018/11/21Phono PS380MH-24/THMono PERC154.796868152.001136.345128.14112131211
40*2021/11/20Trina TSM-505DE18M(II)Mono PERC151.853553152.298135.520127.61714121312
35*2021/7/1JA JAM72S20-445MRMono PERC155.352315155.604136.933125.57910101113
33*2021/7/1Trina TSM-450DE173(II)Mono PERC150.628257150.582133.459122.41515151514
36*2021/11/20JA JAM72S30-540MRMono PERC152.023147151.411133.780120.75313141415
212019/3/1Risen RSM120-6-320MMono PERC142.531298134.632121.916114.94416161616
102018/5/24Recom RCM-275-6MB-4-BB21Mono128.12397118.998108.221102.93917171717
232019/5/4Znshine ZXP6-60-275/PMulti126.775487116.641107.232102.46918181818
*Purchased products from the market, which bypassed the random sampling process. All other products were provided by the suppliers.

Test cooperation

pv magazine test is a cooperative effort involving pv magazine, APsystems, 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.

George Touloupas

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