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M12 12BB solar cells are high-efficiency 210mm x 210mm monocrystalline photovoltaic cells using 12 busbars (12BB) and Passivated Emitter and Rear Cell (PERC) technology. They are designed for high-power, utility-scale modules (often 600W+), featuring improved efficiency (
), reduced resistance loss, and increased reliability.
Key Characteristics and Technology
- Size: The M12 standard indicates a large-format 210mm x 210mm square wafer.
- Busbars (12BB): The 12 busbars act as, “many thin, metal lines,” which shorten the electrical path, reduce resistance and energy loss, and improve low-light performance.
- Efficiency: Typically achieves efficiencies around , with many A-grade cells reaching over,.
- Bifaciality: Most M12 12BB cells are bifacial, allowing them to capture sunlight on both sides, which significantly increases overall energy yield.
- Power Output: Individual cells generally produce about 10-11 .
Advantages
- High Power Density: Large wafer size combined with many busbars enables modules (especially when combined with half-cut technology) to reach over 650W or 700W.
- Lower System Cost: These cells are optimized for large-scale projects, helping to reduce the Balance of System (BOS) costs by requiring fewer modules for the same total power output.
- Durability: The high number of busbars enhances the, “mechanical load capacity,” of the cells, making them more resilient to cracking and environmental stress, such as strong winds or heavy snow.
- Compatibility: M12 cells are designed to be compatible with standard inverters and tracking systems used in large-scale utility and commercial projects.
Applications
M12 12BB cells are commonly used in high-performance solar panels, particularly for utility-scale solar farms, commercial rooftops, and large ground-mount systems, often in a half-cut configuration.
M12 12BB cells are commonly used in high-performance solar panels, particularly for utility-scale solar farms, commercial rooftops, and large ground-mount systems, often in a half-cut configuration.
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M12-12BB | Solar Cell Datasheet
ENF Solar
https://www.enfsolar.com › cell-datasheet
ENF Solar
https://www.enfsolar.com › cell-datasheet
MP SOLAR FAB SUBIC INC. Solar Cells Series M12-12BB. Detailed profile including pictures, certification details and manufacturer PDF.
M12 210 mono PERC Bifacial 12BB Solar Cell
ENF Solar
https://www.enfsolar.com › cell-datasheet
ENF Solar
https://www.enfsolar.com › cell-datasheet
Newsolar Energy Co., Ltd. Solar Cells Series M12 210 mono PERC Bifacial 12BB Solar Cell. Detailed profile including pictures, certification details and ...
People also ask
What does 12BB mean on solar panels?
12 busbar
12BB (12 busbar) solar cells use multi-busbar (MBB) technology to collect electricity from the solar cell, which increases efficiency and power output compared to traditional designs with fewer busbars. The increased number of busbars shortens the electrical path, which reduces resistance and power loss.Nov 5, 2025
What are 12BB solar cells? | WSL Solar Co., Ltd. - LinkedIn
LinkedIn
https://www.linkedin.com › posts › wasonlong-solar-tech...
LinkedIn
https://www.linkedin.com › posts › wasonlong-solar-tech...
What size is the solar cell M12?
210x210mm
In terms of performance, the M12 (210x210mm) module achieves high power, high efficiency, high reliability and high power generation. Outdoor verification shows that the power generation gain is 1.6%-2.1%.Jan 14, 2025
The success of the M12 solar cell reveals the “innovation secret code ...
LinkedIn
https://www.linkedin.com › pulse › success-m12-solar-ce...
LinkedIn
https://www.linkedin.com › pulse › success-m12-solar-ce...
What is BB for solar panels?
Bus Bar(BB); A bus bar is a thin metal strip that conducts electricity between batteries. For most solar modules, the bus bar is usually aluminum, copper, tin or nickel.Jan 10, 2022
DIFFERENCES BETWEEN 9BB AND 5BB PANELS - Newpowa
Newpowa
https://www.newpowa.com › blog
Newpowa
https://www.newpowa.com › blog
What is a M10 solar cell?
Features Of The M10 Solar Cell
The M10 cell P-type bificial half cut solar cell could provide up to 30% of the gain in the generation process of the modules, as for the half cut cell technology has a higher conversion efficiency than the full piece. Lower Rated Operating Temperature.
The M10 cell P-type bificial half cut solar cell could provide up to 30% of the gain in the generation process of the modules, as for the half cut cell technology has a higher conversion efficiency than the full piece. Lower Rated Operating Temperature.
M10 Cell, Monocrystalline Cells, Bifacial Solar Cells, Mono Perc Cells
Sunrise Energy Co., Ltd.
https://www.sunriseenergy.cn › products › m10-cell
Sunrise Energy Co., Ltd.
https://www.sunriseenergy.cn › products › m10-cell
Web results
Customized Monocrystalline Bifacial M12 12BB PERC ...
hzgtsolar.com
https://www.hzgtsolar.com › monocrystalline-bifacial-m...
hzgtsolar.com
https://www.hzgtsolar.com › monocrystalline-bifacial-m...
Monocrystalline Bifacial M12 12BB PERC Solar Cell · Dimensions : 210mm*210mm±0.25mm · Thickness : 180±20μm · Front (-) : 12*0.06±0.04mmbusbar (silver), 174±15 ...Read more
What are 12BB Solar Cells?
WSL Solar
https://www.wsl-solar.com › Industry_News › what-are-...
WSL Solar
https://www.wsl-solar.com › Industry_News › what-are-...
Nov 5, 2025 — 12BB (12 busbar) solar cells use multi-busbar (MBB) technology to collect electricity from the solar cell, which increases efficiency and power ...Read more
DIY Solar Cells - 23% Efficiency, 12BB, M12 Monocrystalline
Alibaba.com
https://www.alibaba.com › ... › Solar Cells
Alibaba.com
https://www.alibaba.com › ... › Solar Cells
New Arrival DIY Solar Cell Mono Half Cells 23% Efficiency. A Grade 9BB, 10bb, 12bb Tier 1 Brand M12 Solar Cells. Perfect for DIY projects and higher ...
Mono Solar Panel N-type cell 12BB 480W 485W 490W ...
Jingjiang Alicosolar New Energy Co., Ltd
https://www.alicosolar.com › m12-mono-half-cell-modul...
Jingjiang Alicosolar New Energy Co., Ltd
https://www.alicosolar.com › m12-mono-half-cell-modul...
670 Watt Solar Panel price is about 0.25-0.35 per watt. Ultra-high power meets 21.6% efficiency. The ecosystem of 210 modules has already been formed.Read more
Bifacial 210mm M12 Monocrystalline PERC Solar Cell
DS New Energy
https://www.dsneg.com › ... › P Type Silicon Solar Cell
DS New Energy
https://www.dsneg.com › ... › P Type Silicon Solar Cell
210mm solar cell is with 10.14 watts of rated power. 132pcs half-cut 210mm Mono PERC solar cells can assembly solar panels with power up to 670 watt.Read more
buy 12BB Half Cut Cells Monocrystalline Solar Panels ...
Greensun Solar Energy Tech Co., Limited
https://www.greensunpv.com › 12bb-half-cut-cells-mono...
Greensun Solar Energy Tech Co., Limited
https://www.greensunpv.com › 12bb-half-cut-cells-mono...
12BB Half Cut Cells Monocrystalline Solar Panels 680W 690W 695W 700W Solar Module ; Rated Maximum Power(Pmax) [W], 685. 690 ; Open Circuit Voltage(Voc) [V], 46.35Read more
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Web results
M12 210 Mono PERC Bifacial 12BB Solar Cell
sphoryzont.edu.pl
https://www.sphoryzont.edu.pl › Wed-31-Jan-2018-1584
sphoryzont.edu.pl
https://www.sphoryzont.edu.pl › Wed-31-Jan-2018-1584
Jan 31, 2018 — With its 12-busbar design and PERC technology, it's like the Swiss Army knife of photovoltaics – except instead of opening wine bottles, it's ...
XXR M12-BIFI-12BB | Solar Cell Datasheet
ENF Solar
https://www.enfsolar.com › cell-datasheet
ENF Solar
https://www.enfsolar.com › cell-datasheet
XXR M12-BIFI-12BB ; Cell Efficiency. 21.9 - 23.2 % ; Technology. Bifacial ; Power Range. 9.7 - 10.23 Wp ; Region. China China ; Dimension. 210x210 mm.Read more