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

# Q-Cells vs Silfab

Q-Cells has the broader catalog (89 vs 47 models). Q-Cells leads on peak efficiency at 23.20%.


## The two companies


| Attribute | Q-Cells | Silfab |
| --- | --- | --- |
| Country | South Korea | Canada |
| Headquarters | Seoul | Mississauga |
| Founded | 1999 | 2010 |
| Employees | 2000+ | 800+ |
| Annual capacity | 11.2 GW/year | 1.6 GW/year |
| Tier 1 | yes | yes |
| Listed | NASDAQ: HQCL |  |
| Website | [https://www.qcells.com](https://www.qcells.com) | [https://www.silfabsolar.com](https://www.silfabsolar.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...

Silfab Solar is a North American leader in the design, development, and manufacture of high-efficiency, premium-quality solar cells and modules. Leveraging over 40 years of solar experience, they operate fully automated facilities in Washington, South Carolina, and Ontario, Canada. Their products are designed and...


## Catalog & Power


| Measure | Q-Cells | Silfab | Margin |
| --- | --- | --- | --- |
| Panel Models | 89 | 47 | +42 |
| Max Power | 675 W | 640 W | +35 W |
| Avg Power | 468 W | 429 W | +39 W |


## Efficiency


| Measure | Q-Cells | Silfab | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 23.20% | 22.92% | +0.28 pp |
| Avg Efficiency | 21.21% | 20.56% | +0.65 pp |


## Reliability & Warranty


| Measure | Q-Cells | Silfab | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.325%/°C | -0.341%/°C | +0.017 |
| Bifacial Share | 35 (39%) | 14 (30%) | +10 pp |
| Avg Warranty | 27.0 yrs | 30.0 yrs | +3.0 yr |


## Efficiency distribution

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


| Efficiency band | Q-Cells | Silfab |
| --- | --- | --- |
| \<20% | 7 (7.9%) | 19 (40.4%) |
| 20-21% | 29 (32.6%) | 5 (10.6%) |
| 21-22% | 30 (33.7%) | 10 (21.3%) |
| 22-23% | 21 (23.6%) | 13 (27.7%) |
| 23%+ | 2 (2.2%) | 0 |


## Power distribution

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


| Power band | Q-Cells | Silfab |
| --- | --- | --- |
| \<400W | 20 (22.5%) | 22 (46.8%) |
| 400-499W | 41 (46.1%) | 10 (21.3%) |
| 500-599W | 11 (12.4%) | 12 (25.5%) |
| 600-699W | 17 (19.1%) | 3 (6.4%) |


## Cell technology

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

Dominant cell tech: **PERC** (45%)


| Technology | Q-Cells | Silfab |
| --- | --- | --- |
| PERC | 38 (42.7%) | 21 (44.7%) |
| N-type | 23 (25.8%) | 19 (40.4%) |
| Unknown | 20 (22.5%) | 6 (12.8%) |
| TOPCon | 8 (9.0%) | 1 (2.1%) |


## 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, Silfab


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [SIL-640 XL](https://comparepv.com/panel/silfab-sil-640-xl) | 640 | 22.9 | -0.290 | Monocrystalline |
| 2 | [SIL-630 XL](https://comparepv.com/panel/silfab-sil-630-xl) | 630 | 22.6 | -0.290 | Monocrystalline |
| 3 | [SIL-620 XL](https://comparepv.com/panel/silfab-sil-620-xl) | 620 | 22.2 | -0.290 | Monocrystalline |
| 4 | [SIL-590 XM+](https://comparepv.com/panel/silfab-sil-590-xm) | 590 | 22.8 | -0.290 | Monocrystalline |
| 5 | [SIL-580-XM+-BIFACIAL](https://comparepv.com/panel/silfab-sil-580-xm-bifacial) | 580 | 22.4 | -0.290 | Monocrystalline |
| 6 | [SIL-570 XM+ BIFACIAL](https://comparepv.com/panel/silfab-sil-570-xm-bifacial) | 570 | 22.1 | -0.290 | Monocrystalline |
| 7 | [SIL-570 XM+](https://comparepv.com/panel/silfab-sil-570-xm) | 570 | 22.1 | -0.290 | Monocrystalline |
| 8 | [SIL-540-XM-BIFACIAL](https://comparepv.com/panel/silfab-sil-540-xm-bifacial) | 540 | 22.7 | -0.290 | Monocrystalline |
| 9 | [SIL-530 QM](https://comparepv.com/panel/silfab-sil-530-qm) | 530 | 22.3 | -0.290 | Monocrystalline |
| 10 | [SIL-530 XM](https://comparepv.com/panel/silfab-sil-530-xm) | 530 | 22.3 | -0.290 | Monocrystalline |


## Summary

Q-Cells, operating under the Hanwha Solutions umbrella since the South Korean conglomerate acquired the original German Q-Cells brand, is one of the largest solar manufacturers in the world and holds BloombergNEF Tier 1 status. Its US footprint is unusually large for the industry: facilities in Dalton and Cartersville, Georgia give it a planned domestic module production capacity of up to 8.4 GW annually, making it the only company assembling a nearly complete solar supply chain - from ingots and wafers through cells and modules - on US soil. Silfab Solar is a smaller but firmly bankable manufacturer headquartered in Mississauga, Ontario, Canada, tracing its history to 1981 and building out North American facilities over decades. It maintains Tier 1 status recognized by third-party testing labs including Kiwa-PVEL and RETC, and operates module and cell plants in Washington State and South Carolina, with combined module capacity in the low single-digit GW range. By sheer institutional scale and financial backing, Q-Cells carries the stronger footprint.

On the product side, Q-Cells targets the premium residential and light commercial rooftop segment with its Q.ANTUM NEO line, which uses N-type cell architecture and delivers efficiency ratings around 22.5%, along with a notably low temperature coefficient that independent reviewers highlight as an advantage in hot climates. Silfab's Prime NTC series also uses N-type TOPCon cells, and the brand differentiates itself with a 30-year product and performance warranty - longer than the 25-year coverage Q-Cells offers - while keeping its focus squarely on the North American residential and commercial rooftop market.

For a typical US homeowner in 2025, Q-Cells is the easier default: wider installer availability, deeper supply, and a proven track record at scale. Silfab is a credible alternative for buyers who prioritize fully domestic or North American manufacturing and value the longer warranty, but it is less universally stocked. The two brands are genuinely close in technology and quality; the practical decision often comes down to which installer has preferred pricing.

\---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.solarreviews.com/blog/silfab-solar-panels-complete-review \| 2025 Silfab Solar Panels Expert Review - SolarReviews \| review

\- https://www.energysage.com/solar/best-solar-panels-complete-ranking/silfab-solar-panels-complete-review/ \| Silfab Solar Panels: The Complete Review - EnergySage \| review

\- https://taiyangnews.info/business/hanwha-solutions-planning-8-4-gw-us-production-capacity \| Hanwha Solutions Planning 8.4 GW US Production Capacity - TaiyangNews \| article

\- https://www.ecowatch.com/solar/reviews/qcells-solar-panels \| QCells Solar Panels Review 2025 - EcoWatch \| review

Sources:

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

\- \[2025 Silfab Solar Panels Expert Review\](https://www.solarreviews.com/blog/silfab-solar-panels-complete-review)

\- \[Silfab Solar Panels: The Complete Review - EnergySage\](https://www.energysage.com/solar/best-solar-panels-complete-ranking/silfab-solar-panels-complete-review/)

\- \[Hanwha Solutions Planning 8.4 GW US Production Capacity\](https://taiyangnews.info/business/hanwha-solutions-planning-8-4-gw-us-production-capacity)

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

Written by claude-sonnet from the figures above.


## Other comparisons

- [Q-Cells vs A.B. Energy](https://comparepv.com/q-cells-vs-a-b-energy)
- [AE Solar vs Silfab](https://comparepv.com/ae-solar-vs-silfab)
- [Q-Cells vs AEET](https://comparepv.com/q-cells-vs-aeet)
- [AIKO vs Silfab](https://comparepv.com/aiko-vs-silfab)
- [Q-Cells vs AKCOME](https://comparepv.com/q-cells-vs-akcome)
- [ARTsolar vs Silfab](https://comparepv.com/artsolar-vs-silfab)


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Source: https://comparepv.com/q-cells-vs-silfab

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