---
title: "AU Optronics vs Q-Cells - Brand Comparison | ComparePV"
description: "Compare AU Optronics vs Q-Cells solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/au-optronics-vs-q-cells"
---

# AU Optronics vs Q-Cells

Q-Cells has the broader catalog (89 vs 1 models). Q-Cells leads on peak efficiency at 23.20%. Q-Cells leans bifacial (39% of lineup).


## The two companies


| Attribute | AU Optronics | Q-Cells |
| --- | --- | --- |
| Country | Taiwan | South Korea |
| Headquarters | Hsinchu | Seoul |
| Founded | 1996 | 1999 |
| Employees | 41000+ | 2000+ |
| Annual capacity |  | 11.2 GW/year |
| Tier 1 | yes | yes |
| Listed | TWSE (Taiwan Stock Exchange): 2409 | NASDAQ: HQCL |
| Website | [https://www.auo.com/en-global](https://www.auo.com/en-global) | [https://www.qcells.com](https://www.qcells.com) |

AU Optronics (AUO) is a technology-driven company based in Taiwan, specializing in optoelectronics and display solutions. They deliver products and services that advance innovation in areas like display technology, system solutions, industrial intelligence, healthcare, and energy. AUO operates globally across Asia...

Qcells is a renowned global provider of complete energy solutions, specializing in solar cells and modules, energy storage solutions, downstream project business, and energy retail. The company has a strong heritage dating back to its foundation in Germany and has become a leader in technology innovations. As an...


## Catalog & Power


| Measure | AU Optronics | Q-Cells | Margin |
| --- | --- | --- | --- |
| Panel Models | 1 | 89 | +88 |
| Max Power | 170 W | 675 W | +505 W |
| Avg Power | 170 W | 468 W | +298 W |


## Efficiency


| Measure | AU Optronics | Q-Cells | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 16.00% | 23.20% | +7.20 pp |
| Avg Efficiency | 16.00% | 21.21% | +5.21 pp |


## Reliability & Warranty


| Measure | AU Optronics | Q-Cells | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.438%/°C | -0.325%/°C | +0.113 |
| Bifacial Share | 0 (0%) | 35 (39%) | +39 pp |
| Avg Warranty | - | 27.0 yrs |  |


## Efficiency distribution

Q-Cells skews to higher efficiency: 2% of lineup is 23%+


| Efficiency band | AU Optronics | Q-Cells |
| --- | --- | --- |
| \<20% | 1 (100.0%) | 7 (7.9%) |
| 20-21% | 0 | 29 (32.6%) |
| 21-22% | 0 | 30 (33.7%) |
| 22-23% | 0 | 21 (23.6%) |
| 23%+ | 0 | 2 (2.2%) |


## Power distribution

Q-Cells offers more 600W+ panels (19% of lineup)


| Power band | AU Optronics | Q-Cells |
| --- | --- | --- |
| \<400W | 1 (100.0%) | 20 (22.5%) |
| 400-499W | 0 | 41 (46.1%) |
| 500-599W | 0 | 11 (12.4%) |
| 600-699W | 0 | 17 (19.1%) |


## Cell technology

Dominant cell tech: **PERC** (43%)


| Technology | AU Optronics | Q-Cells |
| --- | --- | --- |
| Unknown | 1 (100.0%) | 20 (22.5%) |
| PERC | 0 | 38 (42.7%) |
| N-type | 0 | 23 (25.8%) |
| TOPCon | 0 | 8 (9.0%) |


## Top panels, AU Optronics


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [ASM170M](https://comparepv.com/panel/au-optronics-asm170m) | 170 | 16.0 | -0.438 | Monocrystalline |


## Top panels, Q-Cells


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [Q.PEAK DUO ML-G12S.3 / BFG 675](https://comparepv.com/panel/q-cells-q-peak-duo-ml-g12s-3-bfg-675) | 675 | 21.7 | -0.340 | Monocrystalline |
| 2 | [Q.PEAK DUO ML-G12S.3 / BFG 670](https://comparepv.com/panel/q-cells-q-peak-duo-ml-g12s-3-bfg-670) | 670 | 21.6 | -0.340 | Monocrystalline |
| 3 | [Q.PEAK DUO ML-G12S.3 / BFG 665](https://comparepv.com/panel/q-cells-q-peak-duo-ml-g12s-3-bfg-665) | 665 | 21.4 | -0.340 | Monocrystalline |
| 4 | [Q.PEAK DUO ML-G12S.3 / BFG 660](https://comparepv.com/panel/q-cells-q-peak-duo-ml-g12s-3-bfg-660) | 660 | 21.2 | -0.340 | Monocrystalline |
| 5 | [Q.PEAK DUO ML-G12S.3 / BFG 655](https://comparepv.com/panel/q-cells-q-peak-duo-ml-g12s-3-bfg-655) | 655 | 21.1 | -0.340 | Monocrystalline |
| 6 | [Q.PEAK DUO ML-G12S.3 / BFG 650](https://comparepv.com/panel/q-cells-q-peak-duo-ml-g12s-3-bfg-650) | 650 | 20.9 | -0.340 | Monocrystalline |
| 7 | [Q.TRON XL-G2.3 / BFG 645](https://comparepv.com/panel/q-cells-q-tron-xl-g2-3-bfg-645) | 645 | 23.1 | -0.290 | Monocrystalline |
| 8 | [Q.TRON XL-G2.3 / BFG 640](https://comparepv.com/panel/q-cells-q-tron-xl-g2-3-bfg-640) | 640 | 22.9 | -0.290 | Monocrystalline |
| 9 | [Q.TRON XL-G2.3 / BFG 635](https://comparepv.com/panel/hanwha-q-cells-america-inc-q-tron-xl-g2-3-bfg-635) | 635 | 22.7 | -0.300 | Monocrystalline |
| 10 | [Q.TRON XL-G2.3 / BFG 630](https://comparepv.com/panel/hanwha-q-cells-america-inc-q-tron-xl-g2-3-bfg-630) | 630 | 22.6 | -0.300 | Monocrystalline |


## Summary

AU Optronics (AUO) is a Taiwanese company headquartered in Hsinchu, founded in 2001 and best known globally as a major flat-panel display manufacturer. Its solar business, branded AUO SunAlto, is a smaller but formally recognized division that has earned Tier 1 status on Solar Insure's 2025 panel list, reflecting adequate financial standing and manufacturing continuity. Q-Cells, now operated as Hanwha Q CELLS under South Korea's Hanwha Group since the 2012 acquisition of the German original, carries Bloomberg NEF Tier 1 recognition and a substantially larger institutional footprint, with global module capacity exceeding 11 GW annually and a combined U.S. production footprint of roughly 8.4 GW across its Dalton and Cartersville, Georgia facilities - making it the only company in North America manufacturing ingots, wafers, cells, and modules under one supply chain. In terms of bankability and warranty-backing scale, Hanwha Q CELLS holds the clearer institutional advantage.

On the product side, AUO's solar lineup centers on its SunAlto bifacial dual-glass modules, which use TOPCon cells and target commercial and utility-adjacent projects where weather durability is a priority; independent reviewers note limited consumer-facing coverage, suggesting the brand skews toward project developers rather than residential end-users. Hanwha Q CELLS, by contrast, serves the full spectrum: its Q.TRON G2 residential line using Q.ANTUM NEO (a TOPCon-derived passivation technology) reaches efficiency ratings above 22.5%, while larger-format modules address commercial rooftop and utility-scale ground-mount applications. SolarReviews ranked Q CELLS third among all manufacturers in 2025, and the brand's temperature coefficient - as low as -0.29%/°C - gives it a documented performance edge in hot climates.

For a typical buyer in 2025, Hanwha Q CELLS is the more versatile default choice: deeper installer networks, stronger warranty infrastructure, domestic U.S. manufacturing optionality, and a richer body of independent performance data all reduce procurement risk. AUO SunAlto remains a credible option for project developers who can evaluate it on a case-by-case basis, but its limited retail presence and sparse end-user reviews make it a harder recommendation for residential or small-commercial buyers without specialized due diligence support.

\---LINKS---

\- https://www.energysage.com/supplier/21601/auo-benq-solar/ \| AUO BenQ Solar - Profile and Reviews 2026 - EnergySage \| review

\- https://www.pv-magazine.com/2024/10/10/au-optronics-sas-win-pv-awards-in-taiwan-for-high-efficiency-module/ \| AU Optronics and SAS win PV awards for high-efficiency module \| article

\- https://www.solarreviews.com/blog/hanwha-q-cells-solar-panels-complete-review \| Expert Review of Qcells Solar Panels for 2025 - SolarReviews \| review

\- https://www.pv-tech.org/qcells-adds-2gw-of-capacity-to-dalton-module-manufacturing-facility-in-georgia-us/ \| Qcells adds 2GW of capacity to Dalton module facility in Georgia \| article

\- https://www.solarinsure.com/tier-1-panel-list \| Tier 1 Solar Panel List 2025 - Solar Insure \| article

Sources:

\- \[AUO BenQ Solar - Profile & Reviews 2026 - EnergySage\](https://www.energysage.com/supplier/21601/auo-benq-solar/)

\- \[AU Optronics and SAS win PV awards for high-efficiency module - PV Magazine\](https://www.pv-magazine.com/2024/10/10/au-optronics-sas-win-pv-awards-in-taiwan-for-high-efficiency-module/)

\- \[Expert Review of Qcells Solar Panels for 2025 - SolarReviews\](https://www.solarreviews.com/blog/hanwha-q-cells-solar-panels-complete-review)

\- \[Qcells adds 2GW of capacity to Dalton module facility in Georgia - PV Tech\](https://www.pv-tech.org/qcells-adds-2gw-of-capacity-to-dalton-module-manufacturing-facility-in-georgia-us/)

\- \[Tier 1 Solar Panel List 2025 - Solar Insure\](https://www.solarinsure.com/tier-1-panel-list)

Written by claude-sonnet from the figures above.


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- [AU Optronics vs A.B. Energy](https://comparepv.com/au-optronics-vs-a-b-energy)
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- [AIKO vs Q-Cells](https://comparepv.com/aiko-vs-q-cells)
- [AU Optronics vs AKCOME](https://comparepv.com/au-optronics-vs-akcome)
- [ARTsolar vs Q-Cells](https://comparepv.com/artsolar-vs-q-cells)


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Source: https://comparepv.com/au-optronics-vs-q-cells

Not in this file, on the page: the distributions above drawn as charts.