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

# Q-Cells vs SEG Solar

Q-Cells has the broader catalog (89 vs 0 models). Q-Cells leans bifacial (39% of lineup).


## The two companies


| Attribute | Q-Cells | SEG Solar |
| --- | --- | --- |
| Country | South Korea | United States |
| Headquarters | Seoul | Houston |
| Founded | 1999 | 2016 |
| Employees | 2000+ |  |
| Annual capacity | 11.2 GW/year | 6+ GW/year |
| Tier 1 | yes | yes |
| Listed | NASDAQ: HQCL |  |
| Website | [https://www.qcells.com](https://www.qcells.com) | [https://www.segsolar.com](https://www.segsolar.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...

SEG Solar is a vertically integrated solar photovoltaic module manufacturer headquartered in Houston, Texas, with manufacturing operations in the USA and Indonesia. The company serves utility, commercial, and residential markets, and by end of 2024 had shipped over 6 GW of modules globally. SEG Solar is one of the few...


## Catalog & Power


| Measure | Q-Cells | SEG Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 89 | 0 | +89 |
| Max Power | 675 W | 0 W | +675 W |
| Avg Power | 468 W | 0 W | +468 W |


## Efficiency


| Measure | Q-Cells | SEG Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 23.20% | - |  |
| Avg Efficiency | 21.21% | - |  |


## Reliability & Warranty


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


## Efficiency distribution

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


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


## Power distribution

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


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


## Cell technology

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


| Technology | Q-Cells | SEG Solar |
| --- | --- | --- |
| PERC | 38 (42.7%) | 0 |
| N-type | 23 (25.8%) | 0 |
| Unknown | 20 (22.5%) | 0 |
| TOPCon | 8 (9.0%) | 0 |


## 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

Q-Cells, operating today as Hanwha Q CELLS under South Korean conglomerate Hanwha Group, traces its origins to a German startup founded in 1999 and has grown into one of the world's largest solar manufacturers. The company holds Bloomberg NEF Tier 1 status and maintains a combined global production capacity reported at over 11 GW annually, with a flagship U.S. plant in Dalton, Georgia that is widely cited as the largest solar manufacturing facility in the Western Hemisphere. SEG Solar, headquartered in Houston, Texas, is a significantly younger and smaller entrant that nonetheless achieved BNEF Tier 1 designation by Q1 2025 and had shipped over 7.5 GW of modules worldwide by end of 2025. A new 4 GW factory in Houston - expected to begin commercial operations in Q3 2026 - will push SEG's total U.S. capacity to roughly 6 GW. On institutional scale and brand recognition, Q-Cells carries the stronger footprint by a wide margin.

Q-Cells built its reputation on its proprietary Q.ANTUM PERC cell architecture, which is engineered for low temperature coefficients and strong real-world output in hot climates. The company targets premium residential and commercial rooftop installations across North America, Europe, and Australia, and is actively developing TOPCon and perovskite tandem lines for future product generations. SEG Solar has moved to n-type TOPCon technology for its current U.S.-made modules, with cell efficiencies confirmed in the 21.5%-23.1% range. Its positioning leans toward cost-conscious commercial and utility-adjacent buyers seeking domestically manufactured Tier 1 panels at a lower price point - typically quoted at $0.50-$0.80 per watt at the module level.

For most residential buyers in 2025 who want a proven track record, wide installer familiarity, and strong warranty support, Q-Cells remains the lower-risk default. SEG Solar is a credible alternative for buyers prioritizing U.S.-made content at a more competitive price, particularly for commercial projects where module cost per watt is heavily weighted. The two brands are not interchangeable in brand equity or scale, but SEG Solar's Tier 1 status and domestic manufacturing story make it a legitimate contender rather than a fringe option.

\---LINKS---

\- https://www.solarreviews.com/blog/hanwha-q-cells-solar-panels-complete-review \| Hanwha Q CELLS solar panels - expert review 2025 \| review

\- https://www.paradisesolarenergy.com/blog/seg-solar-panel-review/ \| SEG Solar panel review - Paradise Energy \| review

\- https://www.pv-magazine.com/press-releases/seg-solar-reaffirms-its-leadership-as-a-bloombergnef-tier-1-pv-module-manufacturer/ \| SEG Solar reaffirms BNEF Tier 1 status - PV Magazine \| article

\- https://electrek.co/2026/05/08/seg-solar-ramps-up-with-a-new-4-gw-solar-factory-in-texas/ \| SEG Solar ramps up with new 4 GW factory in Texas - Electrek \| article

\- https://www.pv-tech.org/seg-solar-completes-funding-of-2gw-texas-topcon-module-factory/ \| SEG Solar completes funding of 2 GW Texas TOPCon factory - PV Tech \| article

Sources:

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

\- \[SEG Solar Panel Review - Paradise Energy\](https://www.paradisesolarenergy.com/blog/seg-solar-panel-review/)

\- \[SEG Solar reaffirms BNEF Tier 1 status - PV Magazine\](https://www.pv-magazine.com/press-releases/seg-solar-reaffirms-its-leadership-as-a-bloombergnef-tier-1-pv-module-manufacturer/)

\- \[SEG Solar ramps up with new 4 GW factory in Texas - Electrek\](https://electrek.co/2026/05/08/seg-solar-ramps-up-with-a-new-4-gw-solar-factory-in-texas/)

\- \[SEG Solar completes funding of 2 GW Texas TOPCon factory - PV Tech\](https://www.pv-tech.org/seg-solar-completes-funding-of-2gw-texas-topcon-module-factory/)

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)
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- [AIKO vs SEG Solar](https://comparepv.com/aiko-vs-seg-solar)
- [Q-Cells vs AKCOME](https://comparepv.com/q-cells-vs-akcome)
- [ARTsolar vs SEG Solar](https://comparepv.com/artsolar-vs-seg-solar)


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

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