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

# ET Solar vs Q-Cells

Q-Cells has the broader catalog (89 vs 10 models). Q-Cells leads on peak efficiency at 23.20%. ET Solar leans bifacial (50% of lineup).


## The two companies


| Attribute | ET Solar | Q-Cells |
| --- | --- | --- |
| Country | China | South Korea |
| Headquarters | Nanjing | Seoul |
| Founded | 2005 | 1999 |
| Employees |  | 2000+ |
| Annual capacity |  | 11.2 GW/year |
| Tier 1 | no | yes |
| Listed |  | NASDAQ: HQCL |
| Website | [https://www.etsolar.com](https://www.etsolar.com) | [https://www.qcells.com](https://www.qcells.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...


## Catalog & Power


| Measure | ET Solar | Q-Cells | Margin |
| --- | --- | --- | --- |
| Panel Models | 10 | 89 | +79 |
| Max Power | 555 W | 675 W | +120 W |
| Avg Power | 542 W | 468 W | +74 W |


## Efficiency


| Measure | ET Solar | Q-Cells | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 21.40% | 23.20% | +1.80 pp |
| Avg Efficiency | 20.99% | 21.21% | +0.22 pp |


## Reliability & Warranty


| Measure | ET Solar | Q-Cells | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.340%/°C | -0.325%/°C | +0.015 |
| Bifacial Share | 5 (50%) | 35 (39%) | +11 pp |
| Avg Warranty | 27.5 yrs | 27.0 yrs | +0.5 yr |


## Efficiency distribution

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


| Efficiency band | ET Solar | Q-Cells |
| --- | --- | --- |
| 20-21% | 5 (50.0%) | 29 (32.6%) |
| 21-22% | 5 (50.0%) | 30 (33.7%) |
| \<20% | 0 | 7 (7.9%) |
| 22-23% | 0 | 21 (23.6%) |
| 23%+ | 0 | 2 (2.2%) |


## Power distribution

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


| Power band | ET Solar | Q-Cells |
| --- | --- | --- |
| 500-599W | 10 (100.0%) | 11 (12.4%) |
| \<400W | 0 | 20 (22.5%) |
| 400-499W | 0 | 41 (46.1%) |
| 600-699W | 0 | 17 (19.1%) |


## Cell technology

Dominant cell tech: **PERC** (100%)

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


| Technology | ET Solar | Q-Cells |
| --- | --- | --- |
| PERC | 10 (100.0%) | 38 (42.7%) |
| N-type | 0 | 23 (25.8%) |
| Unknown | 0 | 20 (22.5%) |
| TOPCon | 0 | 8 (9.0%) |


## Top panels, ET Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [ET-M772BH555WW/WB](https://comparepv.com/panel/et-solar-et-m772bh555ww-wb) | 555 | 21.4 | -0.340 | Monocrystalline |
| 2 | [ET-M772BH550TW/TB](https://comparepv.com/panel/et-solar-et-m772bh550tw-tb) | 550 | 21.3 | -0.340 | Monocrystalline |
| 3 | [ET-M772BH550WW/WB](https://comparepv.com/panel/et-solar-et-m772bh550ww-wb) | 550 | 21.3 | -0.340 | Monocrystalline |
| 4 | [ET-M772BH545TW/TB](https://comparepv.com/panel/et-solar-et-m772bh545tw-tb) | 545 | 21.1 | -0.340 | Monocrystalline |
| 5 | [ET-M772BH545WW/WB](https://comparepv.com/panel/et-solar-et-m772bh545ww-wb) | 545 | 21.1 | -0.340 | Monocrystalline |
| 6 | [ET-M772BH540TW/TB](https://comparepv.com/panel/et-solar-et-m772bh540tw-tb) | 540 | 20.9 | -0.340 | Monocrystalline |
| 7 | [ET-M772BH540WW/WB](https://comparepv.com/panel/et-solar-et-m772bh540ww-wb) | 540 | 20.9 | -0.340 | Monocrystalline |
| 8 | [ET-M772BH535TW/TB](https://comparepv.com/panel/et-solar-et-m772bh535tw-tb) | 535 | 20.7 | -0.340 | Monocrystalline |
| 9 | [ET-M772BH535WW/WB](https://comparepv.com/panel/et-solar-et-m772bh535ww-wb) | 535 | 20.7 | -0.340 | Monocrystalline |
| 10 | [ET-M772BH530TW/TB](https://comparepv.com/panel/et-solar-et-m772bh530tw-tb) | 530 | 20.5 | -0.340 | Monocrystalline |


## 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

ET Solar is a Chinese module manufacturer founded in 2005 and headquartered in Nanjing, Jiangsu province. The company grew its module and EPC business substantially through the 2010s, but its institutional footing has been uneven - the controlling shareholder filed for bankruptcy in early 2020, and ownership passed to Anhui Gourgen following a majority-stake acquisition in 2023. Search results do not confirm ET Solar on recent BloombergNEF Tier 1 lists, leaving its current bankability standing with commercial lenders uncertain. Q-Cells, now operating as Hanwha Q CELLS, was originally founded in 1999 in Bitterfeld-Wolfen, Germany; South Korean conglomerate Hanwha acquired the brand out of insolvency in 2012 and has since established it as a globally bankable supplier with confirmed BloombergNEF Tier 1 status. Hanwha Q CELLS operates what independent reviewers describe as the largest solar manufacturing facility in the Western Hemisphere, in Dalton, Georgia, producing more panels in North America than any other manufacturer. On institutional footprint and bankability, Q-Cells holds a clear advantage.

Q-Cells addresses residential rooftops, commercial installations, and utility-scale ground mounts through a portfolio spanning roughly 335W to 635W. Its proprietary Q.ANTUM technology - a refined PERC architecture commercialized in 2012 - underpins the bulk of its lineup, and the company has since added Q.ANTUM NEO, its TOPCon platform, with reviewers confirming efficiency ratings of 22.5% or above in leading models. Temperature coefficients as low as -0.29 percent per degree Celsius give it a documented edge in hot-climate deployments. ET Solar historically addressed commercial and utility segments with competitive mono-PERC products, but independent reviews covering 2024-2025 are sparse, and the recent ownership restructuring makes it harder to assess the current technology roadmap with confidence.

For a typical buyer in 2025, Q-Cells is the more defensible choice. Its Tier 1 bankability, domestic U.S. manufacturing, 25-year product warranties, and well-documented efficiency record make it straightforward to finance and specify for residential or commercial projects alike. Buyers considering ET Solar should independently verify its current bankability status before committing to financed or long-horizon installations.

\---LINKS---

\- https://www.pv-magazine.com/2020/02/03/et-solar-main-shareholder-files-for-bankruptcy/ \| ET Solar main shareholder files for bankruptcy - PV Magazine \| article

\- https://www.solarquotes.com.au/panels/et-solar-review.html \| ET Solar panel review - SolarQuotes \| review

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

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

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

Written by claude-sonnet from the figures above.


## Other comparisons

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


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

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