LONGi Solar announces its PERC solar cell achieved world record bifaciality of 82.15%

LONGi Solar  announced yesterday that the National Center of Supervision and Inspection on Solar Photovoltaic Products Quality (CPVT) issued an independent test report showing that LONGi Solar’s bifacial PERC monocrystalline cells achieved a world record bifaciality of 82.15%.

https://twitter.com/longi_solar/status/938937046881542144

LONGi Solar released its bifacial PERC monocrystalline module (Hi-MO2) at Shanghai SNEC 2017 event.

The bifaciality of bifacial PERC cells in the market is about 75%, and LONGi Solar’s monocrystalline bifacial PERC cell has increased the bifaciality to an industry-leading 82.15%, which has not only enriched the application scenarios of PERC bifacial cells, but also improved cost performance in addition to higher energy yield.

Li Wenxue, President of LONGi Solar said:

“Hi-MO2 extends the advantages of monocrystalline PERC to the back side of the module, without increasing costs. Combined with higher power and higher energy yield, Hi-MO2 reduces LCOE and brings more benefits to the PV power plant investors.”

The bifacial PERC modules come with double glass lamination. Combined with low degradation mono PERC technology, Hi-MO2 offers first-year degradation below 2%, and the average annual degradation below 0.45% for 30 years – significantly better than conventional modules. Meanwhile, the adoption of a double-glass improves PID resistance and can extend the module life beyond 30 years.

In mass production, the efficiency of the front side exceeds 21.2%. Light reception of the backside can bring significantly additional energy yield. If the backside power yield increases the overall module efficiency by 10%, the power of bifacial PERC module can reach 330 watts for 60-cell module (300 watts from the front side), and 396 watts for 72-cell module (360 watts from the front side).

LONGi solar holding a press conference in Beijing

Longi Solar had previously announced on October 17, 2017, that  Fraunhofer ISE CalLab of Germany had certified a photovoltaic conversion efficiency of 22.71% on the company’s monocrystalline PERC cell, which was a new world record for this cell type. LONGi Solar plans to introduce the 22.0% efficient PERC cell technology into the production line at the end of 2017 and reports that the module power rating will achieve 340W-345W for a 60-cell  format by 2018.

Dr. Li Hua, Vice President of Cell R&D of LONGi Solar, said:

“Based on large-area, P-type monocrystalline silicon wafer, we are able to employ mass production compatible cell process technology and able to realize a conversion efficiency of 22.71%. This greatly enhances the entire industry’s confidence in P-type monocrystalline cell. With continued R&D optimization, we believe the monocrystalline PERC cell can reach a conversion efficiency of greater than 23.0% in the near future.”


Source: Press Release by Longi Solar. Image Credit: © Longi Solar.