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

# Q-Cells vs Q-SUN Solar

Q-SUN Solar has the broader catalog (111 vs 89 models). Q-SUN Solar leads on peak efficiency at 23.70%. Q-SUN Solar leans bifacial (68% of lineup).


## The two companies


| Attribute | Q-Cells | Q-SUN Solar |
| --- | --- | --- |
| Country | South Korea | China |
| Headquarters | Seoul |  |
| Founded | 1999 | 2014 |
| Employees | 2000+ |  |
| Annual capacity | 11.2 GW/year |  |
| Tier 1 | yes | no |
| Listed | NASDAQ: HQCL |  |
| Website | [https://www.qcells.com](https://www.qcells.com) | [https://www.q-sunsolar.com](https://www.q-sunsolar.com) |

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...

Qn-SOLAR officially launched its global PV business in 2022. The company is headquartered in Shanghai, China, and has four manufacturing bases in China. As a professional and integrated company, Qn-SOLAR operates in various fields of PV upstream and downstream, achieving an annual production capacity of 20GW PV cells...


## Catalog & Power


| Measure | Q-Cells | Q-SUN Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 89 | 111 | +22 |
| Max Power | 675 W | 730 W | +55 W |
| Avg Power | 468 W | 543 W | +75 W |


## Efficiency


| Measure | Q-Cells | Q-SUN Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 23.20% | 23.70% | +0.50 pp |
| Avg Efficiency | 21.21% | 21.91% | +0.69 pp |


## Reliability & Warranty


| Measure | Q-Cells | Q-SUN Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.325%/°C | -0.303%/°C | +0.021 |
| Bifacial Share | 35 (39%) | 76 (68%) | +29 pp |
| Avg Warranty | 27.0 yrs | 28.7 yrs | +1.7 yr |


## Efficiency distribution

Q-SUN Solar skews to higher efficiency: 11% of lineup is 23%+


| Efficiency band | Q-Cells | Q-SUN Solar |
| --- | --- | --- |
| \<20% | 7 (7.9%) | 0 |
| 20-21% | 29 (32.6%) | 15 (13.5%) |
| 21-22% | 30 (33.7%) | 39 (35.1%) |
| 22-23% | 21 (23.6%) | 45 (40.5%) |
| 23%+ | 2 (2.2%) | 12 (10.8%) |


## Power distribution

Q-SUN Solar offers more 600W+ panels (30% of lineup)


| Power band | Q-Cells | Q-SUN Solar |
| --- | --- | --- |
| \<400W | 20 (22.5%) | 1 (0.9%) |
| 400-499W | 41 (46.1%) | 40 (36.0%) |
| 500-599W | 11 (12.4%) | 37 (33.3%) |
| 600-699W | 17 (19.1%) | 25 (22.5%) |
| 700W+ | 0 | 8 (7.2%) |


## Cell technology

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

Dominant cell tech: **N-type** (42%)


| Technology | Q-Cells | Q-SUN Solar |
| --- | --- | --- |
| PERC | 38 (42.7%) | 39 (35.1%) |
| N-type | 23 (25.8%) | 47 (42.3%) |
| Unknown | 20 (22.5%) | 0 |
| TOPCon | 8 (9.0%) | 20 (18.0%) |
| HJT | 0 | 5 (4.5%) |


## 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 |


## Top panels, Q-SUN Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [QN-730HJT-01](https://comparepv.com/panel/q-sun-solar-qn-730hjt-01) | 730 | 23.5 | -0.240 | Monocrystalline |
| 2 | [QN-725HJT-01](https://comparepv.com/panel/q-sun-solar-qn-725hjt-01) | 725 | 23.5 | -0.240 | Monocrystalline |
| 3 | [QN-720HJT-01](https://comparepv.com/panel/q-sun-solar-qn-720hjt-01) | 720 | 23.3 | -0.240 | Monocrystalline |
| 4 | [QN-715HJT-01](https://comparepv.com/panel/q-sun-solar-qn-715hjt-01) | 715 | 23.2 | -0.240 | Monocrystalline |
| 5 | [QN-710HJT-01](https://comparepv.com/panel/q-sun-solar-qn-710hjt-01) | 710 | 23.0 | -0.240 | Monocrystalline |
| 6 | [QN-710HT-01](https://comparepv.com/panel/q-sun-solar-qn-710ht-01) | 710 | 22.9 | -0.300 | Monocrystalline |
| 7 | [QN-705HT-01](https://comparepv.com/panel/q-sun-solar-qn-705ht-01) | 705 | 22.7 | -0.300 | Monocrystalline |
| 8 | [QN-700HT-01](https://comparepv.com/panel/q-sun-solar-qn-700ht-01) | 700 | 22.5 | -0.300 | Monocrystalline |
| 9 | [QN-695HT-01](https://comparepv.com/panel/q-sun-solar-qn-695ht-01) | 695 | 22.4 | -0.300 | Monocrystalline |
| 10 | [QN-690HT-01](https://comparepv.com/panel/q-sun-solar-qn-690ht-01) | 690 | 22.2 | -0.300 | Monocrystalline |


## Summary

Q-Cells traces its origins to 1999, when it was founded in Bitterfeld-Wolfen, Germany. Following bankruptcy and acquisition in 2012, it became a subsidiary of South Korea's Hanwha Group and now operates under the Hanwha Solutions umbrella with its global headquarters in Seoul. Q-Cells holds BloombergNEF Tier 1 status and runs manufacturing facilities in South Korea, Malaysia, and the United States - including a plant in Dalton, Georgia, that has been cited at roughly 8.4 GW of annual capacity, making it the largest solar manufacturing site in the Western Hemisphere. Q-SUN Solar is a younger Chinese manufacturer, founded in 2014, with an international marketing center in Nanjing and production bases in Tianchang and Yancheng. The company reports delivering more than 4 GW of modules per year to customers across more than 50 countries, but no confirmed BloombergNEF Tier 1 listing was found in publicly available sources as of mid-2025. On institutional footprint and bankability recognition, Q-Cells holds a clear advantage.

For product families, Q-Cells centers its current lineup on Q.ANTUM NEO technology - a proprietary passivated-contact cell architecture that pushes efficiencies past 22.5% in its Q.TRON G2 series and delivers a notably low temperature coefficient, giving it a performance edge in hot-climate installations. Its modules are used widely across premium residential rooftops and mid-size commercial arrays, and its US manufacturing base gives it a supply-chain argument for American buyers navigating tariff volatility. Q-SUN Solar competes primarily with N-type TOPCon modules: its Mercury series targets large-format utility and commercial projects at around 585W, while the Onyx series offers a full-black aesthetic for residential markets. Its certifications - ISO 9001, ISO 14001, ISO 45001, and TUV Germany IEC approval - are credible, but independent long-term field data on its modules is sparse compared to Q-Cells.

For most buyers in 2025, Q-Cells is the lower-risk default because its Tier 1 bankability status, long field history, and verifiable US manufacturing capacity make it easier to finance and insure. Q-SUN Solar may suit cost-sensitive commercial or utility buyers in markets where Chinese supply chains are well-established and where the TOPCon specifications are independently verified by an EPC partner, but it carries more due-diligence burden.

\---LINKS---

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

\- https://www.ecowatch.com/solar/reviews/qcells-solar-panels \| QCells Solar Panels Review 2025: Cost, Efficiency and Performance \| review

\- https://www.enfsolar.com/q-sun-solar \| Q-SUN Anhui Co., Ltd - Solar Panels - ENF Solar Directory \| article

\- https://solartechonline.com/blog/hanwha-q-cells-solar-panels-review-2025/ \| Hanwha Q CELLS Solar Panels Review 2025: Expert Analysis \| review

\- https://www.renvu.com/blogs/learn/tier-1-solar-panels-list-2025-updated-manufacturers-rankings \| Tier 1 Solar Panels List 2025: Updated Manufacturers and Rankings \| article

Sources:

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

\- \[QCells Solar Panels Review 2025 - EcoWatch\](https://www.ecowatch.com/solar/reviews/qcells-solar-panels)

\- \[Q-SUN Anhui Co., Ltd - ENF Solar\](https://www.enfsolar.com/q-sun-solar)

\- \[Hanwha Q CELLS Solar Panels Review 2025 - SolarTechOnline\](https://solartechonline.com/blog/hanwha-q-cells-solar-panels-review-2025/)

\- \[Tier 1 Solar Panels List 2025 - RENVU\](https://www.renvu.com/blogs/learn/tier-1-solar-panels-list-2025-updated-manufacturers-rankings)

Written by claude-sonnet from the figures above.


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Source: https://comparepv.com/q-cells-vs-q-sun-solar

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