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

# Q-Cells vs Sonnen

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


## The two companies


| Attribute | Q-Cells | Sonnen |
| --- | --- | --- |
| Country | South Korea | Germany |
| Headquarters | Seoul | Wildpoldsried |
| Founded | 1999 | 2010 |
| Employees | 2000+ | 1000-2000 |
| Annual capacity | 11.2 GW/year |  |
| Tier 1 | yes |  |
| Listed | NASDAQ: HQCL |  |
| Website | [https://www.qcells.com](https://www.qcells.com) | [https://sonnengroup.com](https://sonnengroup.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...

Sonnen is a German energy storage technology company specializing in intelligent home battery systems, most notably the sonnenBatterie — the world's first all-in-one lithium-ion home battery system commercially available. The company also develops virtual power plant (VPP) solutions and energy community platforms...


## Catalog & Power


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


## Reliability & Warranty


| Measure | Q-Cells | Sonnen | 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 | Sonnen |
| --- | --- | --- |
| \<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 | Sonnen |
| --- | --- | --- |
| \<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 | Sonnen |
| --- | --- | --- |
| 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, now officially branded Hanwha Q CELLS, is a solar panel manufacturer headquartered in Thalheim, Germany, operating under South Korea's Hanwha Group following an acquisition in 2012. It holds Bloomberg NEF Tier 1 status - confirming strong bankability and financial backing - and has expanded heavily into US manufacturing, with facilities in Dalton and Cartersville, Georgia that together represent several gigawatts of annual module capacity. Anticipated total shipments were reported to exceed 9 GW in 2025, placing it firmly among the top-tier global module suppliers by volume. Sonnen, by contrast, is a German energy storage company founded in 2010 and headquartered in Wildpoldsried, Germany; it was fully acquired by Shell in 2019. Sonnen does not manufacture solar panels at all - it produces residential battery systems (the sonnenBatterie, sonnenCore+, and sonnenEvo lines). In terms of institutional footprint for panel supply, Q-Cells is the clear incumbent.

Q-Cells' core product families - the Q.PEAK DUO and Q.TRON series - target premium residential rooftops and light commercial installations. The company's proprietary Q.ANTUM technology is PERC-based, and the company has publicly announced development roadmaps for TOPCon and perovskite-silicon tandem cells (achieving a reported 28.6% efficiency record on a tandem cell in late 2024). Efficiency ratings for current commercial modules sit in the 20-22.5% range. Sonnen's products sit in a different category entirely: its LFP-chemistry home batteries integrate with any solar array and are positioned as a premium behind-the-meter storage solution, with installed costs typically in the $12,000-$18,000 range for a single 10 kWh unit and a 10,000-cycle warranty.

For a buyer sourcing solar modules, Sonnen is simply not a relevant alternative to Q-Cells - they address different parts of a solar system. A buyer building a residential solar-plus-storage setup in 2025 would evaluate Q-Cells for the generation side and could consider Sonnen as one battery option (alongside Enphase, Tesla Powerwall, or Franklin WH) for the storage side. Q-Cells is the stronger default for panel procurement given its Tier 1 status, US domestic manufacturing eligibility, and broad installer network.

\---LINKS---

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

\- https://www.ecowatch.com/solar/reviews/qcells-solar-panels \| EcoWatch Q CELLS panels review - cost, efficiency, performance \| review

\- https://www.energysage.com/energy-storage/best-home-batteries/sonnen-eco-battery-review/ \| EnergySage sonnen eco battery review \| review

\- https://www.pv-magazine.com/2021/09/13/hanwha-q-cells-unveils-plan-to-produce-perovskite-topcon-solar-modules/ \| PV Magazine - Hanwha Q Cells TOPCon and perovskite roadmap \| article

\- https://www.energy-storage.news/why-shell-bought-sonnen-value-is-in-behind-the-meter-potential/ \| Energy Storage News - why Shell acquired Sonnen \| article

Sources:

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

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

\- \[EnergySage - Sonnen Eco Battery Review\](https://www.energysage.com/energy-storage/best-home-batteries/sonnen-eco-battery-review/)

\- \[PV Magazine - Hanwha Q Cells TOPCon/Perovskite Plans\](https://www.pv-magazine.com/2021/09/13/hanwha-q-cells-unveils-plan-to-produce-perovskite-topcon-solar-modules/)

\- \[Energy Storage News - Why Shell Bought Sonnen\](https://www.energy-storage.news/why-shell-bought-sonnen-value-is-in-behind-the-meter-potential/)

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 Sonnen](https://comparepv.com/ae-solar-vs-sonnen)
- [Q-Cells vs AEET](https://comparepv.com/q-cells-vs-aeet)
- [AIKO vs Sonnen](https://comparepv.com/aiko-vs-sonnen)
- [Q-Cells vs AKCOME](https://comparepv.com/q-cells-vs-akcome)
- [ARTsolar vs Sonnen](https://comparepv.com/artsolar-vs-sonnen)


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

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