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

# FoxESS vs Q-Cells

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


## The two companies


| Attribute | FoxESS | Q-Cells |
| --- | --- | --- |
| Country | China | South Korea |
| Headquarters | Wenzhou | Seoul |
| Founded | 2019 | 1999 |
| Employees |  | 2000+ |
| Annual capacity |  | 11.2 GW/year |
| Tier 1 | yes | yes |
| Listed |  | NASDAQ: HQCL |
| Website | [https://www.fox-ess.com](https://www.fox-ess.com) | [https://www.qcells.com](https://www.qcells.com) |

FoxESS is a global leader in inverter and energy storage solutions, backed by the Fortune Global 500 Tsingshan Group. The company specializes in hybrid inverters, lithium battery storage systems, and smart energy management platforms for residential and commercial applications. With operations in over 70 countries and...

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


## Efficiency


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


## Reliability & Warranty


| Measure | FoxESS | Q-Cells | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | - | -0.325%/°C |  |
| 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 | FoxESS | Q-Cells |
| --- | --- | --- |
| \<20% | 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 | FoxESS | Q-Cells |
| --- | --- | --- |
| \<400W | 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 | FoxESS | Q-Cells |
| --- | --- | --- |
| PERC | 0 | 38 (42.7%) |
| N-type | 0 | 23 (25.8%) |
| Unknown | 0 | 20 (22.5%) |
| TOPCon | 0 | 8 (9.0%) |


## 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

FoxESS is a Chinese manufacturer founded in 2019 and headquartered in Wenzhou, Zhejiang. It specialises in solar inverters, hybrid storage systems, batteries, and EV chargers - it does not manufacture solar panels. The company raised over $140 million in a 2023 Series D round and has rapidly expanded its inverter production facilities in Wenzhou. Q-Cells - now operating as Hanwha Q CELLS - traces its roots to 1999 when it was founded in Bitterfeld-Wolfen, Germany, and was acquired by the South Korean conglomerate Hanwha Group in 2012. It carries Bloomberg NEF Tier 1 bankability status and has built a total module production capacity reported at roughly 12.4 GW globally as of late 2024, including the largest solar manufacturing facility in the Western Hemisphere, located in Dalton, Georgia. On institutional footprint and product breadth in the solar module space, Q-Cells is clearly the more established player.

Because FoxESS and Q-Cells occupy fundamentally different niches, a direct product comparison is not straightforward. FoxESS targets the balance-of-system segment - its product families include single- and three-phase hybrid inverters, high-voltage battery stacks, and smart EV chargers, making it a relevant choice for integrators building complete home-energy or commercial storage systems. Q-Cells, by contrast, is a dedicated module manufacturer serving residential rooftops, commercial installations, and utility-scale ground mounts. Its Q.PEAK DUO line is built on PERC-based Q.ANTUM cell technology, while the newer Q.TRON series uses TOPCon architecture and reaches module efficiencies up to around 22.6%, with a notably low temperature coefficient that reviewers highlight as a strength in hot climates. SolarReviews ranked Q-Cells third among all solar panel manufacturers for 2025.

For a buyer choosing between the two, the framing itself is worth questioning: FoxESS and Q-Cells are not substitutes but potential companions in the same system - FoxESS handling power conversion and storage, Q-Cells supplying the panels. A buyer comparing solar panel brands should evaluate Q-Cells against other module manufacturers such as REC, Jinko, or Maxeon. A buyer comparing inverter and storage brands should evaluate FoxESS against SolarEdge, Sungrow, or Fronius. Both companies are credible in their respective categories, but treating them as like-for-like alternatives would be a category error.

\---LINKS---

\- https://www.cleanenergyreviews.info/blog/foxess-solar-inverter-and-battery-review \| FoxESS inverter and battery review - Clean Energy Reviews \| review

\- https://www.energysage.com/supplier/26817/fox-ess/ \| Fox ESS profile and reviews - EnergySage \| review

\- https://www.solarreviews.com/blog/hanwha-q-cells-solar-panels-complete-review \| Expert review of Q-Cells solar panels for 2025 - SolarReviews \| review

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

\- https://solartechonline.com/blog/hanwha-q-cells-solar-panels-review-2025/ \| Hanwha Q CELLS solar panels review 2025 - SolarTechOnline \| review

Sources:

\- \[FoxESS inverter and battery review - Clean Energy Reviews\](https://www.cleanenergyreviews.info/blog/foxess-solar-inverter-and-battery-review)

\- \[Fox ESS profile and reviews - EnergySage\](https://www.energysage.com/supplier/26817/fox-ess/)

\- \[Expert review of Q-Cells solar panels for 2025 - SolarReviews\](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)

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

Written by claude-sonnet from the figures above.


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