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

# Q-Cells vs Wattpower

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


## The two companies


| Attribute | Q-Cells | Wattpower |
| --- | --- | --- |
| Country | South Korea | China |
| Headquarters | Seoul | Nanjing |
| Founded | 1999 | 2020 |
| Employees | 2000+ | 11-50 |
| Annual capacity | 11.2 GW/year | 1-2 GW/year |
| Tier 1 | yes |  |
| Listed | NASDAQ: HQCL |  |
| Website | [https://www.qcells.com](https://www.qcells.com) | [https://www.watt-power.com](https://www.watt-power.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...

WattPower Technology Co., Ltd is a Chinese solar module manufacturer headquartered in Nanjing, Jiangsu. The company specializes in high-performance photovoltaic modules utilizing 182mm large-size silicon wafers combined with PERC, multi-busbar, half-cell, bifacial, and high-density encapsulation technologies. It...


## Catalog & Power


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


## Reliability & Warranty


| Measure | Q-Cells | Wattpower | 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 | Wattpower |
| --- | --- | --- |
| \<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 | Wattpower |
| --- | --- | --- |
| \<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 | Wattpower |
| --- | --- | --- |
| 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 operating as Hanwha Q CELLS, is a South Korean manufacturer founded in 1999 and majority-owned since 2012 by the Hanwha Group conglomerate. The brand holds BloombergNEF Tier 1 bankability status and is among the most recognized names in global module supply, with confirmed combined global module production capacity exceeding 11 GW and a U.S.-based capacity reaching 8.4 GW following significant investment in its Dalton and Cartersville, Georgia facilities - making it the largest solar manufacturing presence in the Western Hemisphere. Q-Cells carries a substantially stronger institutional footprint than virtually any comparison peer operating outside the top tier of Chinese and Korean manufacturers.

Wattpower, by contrast, does not appear in any publicly available BloombergNEF Tier 1 module lists, independent industry reviews, or bankability analyses reviewed in the course of this research. The name "WattPower" does surface in connection with a small Indian inverter startup founded in 2022, which focuses on string inverters rather than PV modules. If Wattpower is a distinct panel brand operating under a similar name, it has not achieved sufficient market presence to appear in sources such as pv-magazine.com, solarreviews.com, TaiyangNews, or EcoWatch as of mid-2026. Q-Cells, meanwhile, is well-documented for residential and commercial rooftop product families deploying its proprietary Q.ANTUM cell technology, with a confirmed roadmap toward perovskite-silicon tandem modules.

For any typical buyer in 2025-2026 - residential rooftop, commercial flat roof, or mid-scale ground mount - Q-Cells is the clear default choice. It offers verified Tier 1 bankability, documented 25-year product warranties, third-place ranking in SolarReviews' 2025 manufacturer list, and a credible domestic supply chain in the United States. Without verifiable public information confirming Wattpower's panel manufacturing operations, certification status, or warranty structure, no objective comparison of technical specifications or value positioning is possible.

\---LINKS---

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

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

\- https://www.hanwha.com/newsroom/news/press-releases/hanwha-qcells-new-cartersville-factory-set-for-33-gw-of-solar-module-production-per-year.do \| Hanwha Qcells Cartersville factory - 3.3 GW annual production \| article

\- https://renewablewatch.in/2025/10/28/wattpower-emerging-player-in-the-solar-inverter-space/ \| WattPower - emerging player in the solar inverter space \| article

\- https://taiyangnews.info/business/qcells-to-expand-solar-production-capacity/ \| Qcells to expand solar production capacity \| article

Sources:

\- \[Hanwha Q CELLS Solar Panels Review 2025 - SolarReviews\](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)

\- \[Hanwha Qcells Cartersville Factory - 3.3 GW\](https://www.hanwha.com/newsroom/news/press-releases/hanwha-qcells-new-cartersville-factory-set-for-33-gw-of-solar-module-production-per-year.do)

\- \[WattPower - Emerging Player in the Solar Inverter Space\](https://renewablewatch.in/2025/10/28/wattpower-emerging-player-in-the-solar-inverter-space/)

\- \[Qcells to Expand Solar Production Capacity - TaiyangNews\](https://taiyangnews.info/business/qcells-to-expand-solar-production-capacity/)

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


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

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