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

# Q-Cells vs Solaria

Q-Cells has the broader catalog (89 vs 27 models). Q-Cells leads on peak efficiency at 23.20%. Q-Cells leans bifacial (39% of lineup).


## The two companies


| Attribute | Q-Cells | Solaria |
| --- | --- | --- |
| Country | South Korea | Spain |
| Headquarters | Seoul | Madrid |
| Founded | 1999 | 2002 |
| Employees | 2000+ | 235 |
| Annual capacity | 11.2 GW/year | 1.658 GW/year |
| Tier 1 | yes |  |
| Listed | NASDAQ: HQCL | BME (Madrid Stock Exchange): SLR |
| Website | [https://www.qcells.com](https://www.qcells.com) | [https://www.solaria.com](https://www.solaria.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...

Solaria is a leading European company focused on developing and generating solar photovoltaic energy. The company aims to contribute to decarbonization by creating a global energy model based on clean energy. Solaria specializes in the implementation and development of solar photovoltaic technology, from manufacturing...


## Catalog & Power


| Measure | Q-Cells | Solaria | Margin |
| --- | --- | --- | --- |
| Panel Models | 89 | 27 | +62 |
| Max Power | 675 W | 680 W | +5 W |
| Avg Power | 468 W | 436 W | +32 W |


## Efficiency


| Measure | Q-Cells | Solaria | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 23.20% | 21.92% | +1.28 pp |
| Avg Efficiency | 21.21% | 19.96% | +1.25 pp |


## Reliability & Warranty


| Measure | Q-Cells | Solaria | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.325%/°C | -0.360%/°C | +0.035 |
| Bifacial Share | 35 (39%) | 5 (19%) | +21 pp |
| Avg Warranty | 27.0 yrs | 26.5 yrs | +0.5 yr |


## Efficiency distribution

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


| Efficiency band | Q-Cells | Solaria |
| --- | --- | --- |
| \<20% | 7 (7.9%) | 13 (48.1%) |
| 20-21% | 29 (32.6%) | 9 (33.3%) |
| 21-22% | 30 (33.7%) | 5 (18.5%) |
| 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 | Solaria |
| --- | --- | --- |
| \<400W | 20 (22.5%) | 14 (51.9%) |
| 400-499W | 41 (46.1%) | 8 (29.6%) |
| 500-599W | 11 (12.4%) | 0 |
| 600-699W | 17 (19.1%) | 5 (18.5%) |


## Cell technology

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

Dominant cell tech: **TOPCon** (19%)


| Technology | Q-Cells | Solaria |
| --- | --- | --- |
| PERC | 38 (42.7%) | 4 (14.8%) |
| N-type | 23 (25.8%) | 0 |
| Unknown | 20 (22.5%) | 18 (66.7%) |
| TOPCon | 8 (9.0%) | 5 (18.5%) |


## 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 |


## Top panels, Solaria


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [SPV680-TG12-132BD](https://comparepv.com/panel/solaria-spv680-tg12-132bd) | 680 | 21.9 | -0.300 | Monocrystalline |
| 2 | [SPV675-TG12-132BD](https://comparepv.com/panel/solaria-spv675-tg12-132bd) | 675 | 21.8 | -0.300 | Monocrystalline |
| 3 | [SPV670-TG12-132BD](https://comparepv.com/panel/solaria-spv670-tg12-132bd) | 670 | 21.6 | -0.300 | Monocrystalline |
| 4 | [SPV665-TG12-132BD](https://comparepv.com/panel/solaria-spv665-tg12-132bd) | 665 | 21.4 | -0.300 | Monocrystalline |
| 5 | [SPV660-TG12-132BD](https://comparepv.com/panel/solaria-spv660-tg12-132bd) | 660 | 21.3 | -0.300 | Monocrystalline |
| 6 | [PowerXT 430R-PL](https://comparepv.com/panel/solaria-powerxt-430r-pl) | 430 | 20.4 | -0.390 | Monocrystalline |
| 7 | [Solaria PowerXT-430C-PD](https://comparepv.com/panel/solaria-solaria-powerxt-430c-pd) | 430 | 19.8 | -0.390 | Monocrystalline |
| 8 | [PowerXT 420R-PL](https://comparepv.com/panel/solaria-powerxt-420r-pl) | 420 | 19.9 | -0.390 | Monocrystalline |
| 9 | [Solaria PowerXT-420C-BD](https://comparepv.com/panel/solaria-solaria-powerxt-420c-bd) | 420 | 19.4 | -0.390 | Monocrystalline |
| 10 | [Solaria PowerXT-420C-PD](https://comparepv.com/panel/solaria-solaria-powerxt-420c-pd) | 420 | 19.4 | -0.390 | Monocrystalline |


## Summary

Q-Cells, operating under Hanwha Qcells since its acquisition by the South Korean conglomerate Hanwha Group, traces its roots to Germany where it was founded in 1999 before becoming part of Hanwha's global manufacturing network. The company holds confirmed BloombergNEF Tier 1 bankability status and was named an S&P Global 2025 Tier 1 Cleantech company, with projected module shipments exceeding 9 GW in 2025 and a vertically integrated U.S. manufacturing presence anchored by a facility in Cartersville, Georgia. Solaria Corporation, founded in 2000 and headquartered in Fremont, California, operates at a fundamentally different scale - it has not appeared on the BloombergNEF Tier 1 list, and its market footprint is primarily residential in the United States. Hanwha Qcells carries the clearly stronger institutional footprint, with the financial backing and global production capacity to attract project finance lenders at scale.

On the product side, Q-Cells offers a broad portfolio spanning premium residential, commercial rooftop, and utility-scale ground-mount applications, with its Q.ANTUM line representing commercialized PERC technology and Q.ANTUM NEO extending into N-type TOPCon for higher efficiency. Solaria has concentrated on aesthetics-first residential panels using a proprietary shingled cell architecture - cells are cut into strips and overlapped to eliminate busbars, producing a seamless all-black appearance with claimed advantages in shading tolerance. The PowerXT series carries a 30-year product warranty, which is notably longer than the industry standard and reflects the company's positioning as a premium residential niche brand. It is worth noting that Complete Solaria - the entity that had absorbed Solaria Corporation - rebranded as SunPower in April 2025, meaning the original Solaria panel brand is in transition.

For most buyers in 2025, Q-Cells is the safer default: it offers broad installer availability, confirmed bankability for project financing, and a technology range suited to virtually any application size. Solaria's shingled panels remain a credible choice for residential customers who prioritize aesthetics or have shading constraints, but the brand's ongoing corporate transition introduces additional due-diligence considerations that Q-Cells simply does not share.

\---LINKS---

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

\- https://www.energysage.com/supplier/22218/solaria/ \| Solaria - Profile and Reviews 2026 - EnergySage \| review

\- https://www.hanwha.com/newsroom/news/press-releases/hanwha-qcells-named-an-s-p-global-2025-tier-1-cleantech-company.do \| Hanwha Qcells named 2025 S&P Global Tier 1 Cleantech company \| article

\- https://www.pv-magazine.com/2025/04/25/us-based-complete-solaria-rebrands-as-sunpower/ \| US-based Complete Solaria rebrands as SunPower - pv magazine \| article

\- https://www.solarreviews.com/blog/reviewing-solaria-solar-panels \| Complete Review of Solaria Solar Panels - SolarReviews \| review

Sources:

\- \[Expert Review Of Qcells Solar Panels For 2025\](https://www.solarreviews.com/blog/hanwha-q-cells-solar-panels-complete-review)

\- \[Solaria - Profile & Reviews 2026 - EnergySage\](https://www.energysage.com/supplier/22218/solaria/)

\- \[Hanwha Qcells named 2025 S&P Global Tier 1 Cleantech company\](https://www.hanwha.com/newsroom/news/press-releases/hanwha-qcells-named-an-s-p-global-2025-tier-1-cleantech-company.do)

\- \[US-based Complete Solaria rebrands as SunPower - pv magazine\](https://www.pv-magazine.com/2025/04/25/us-based-complete-solaria-rebrands-as-sunpower/)

\- \[Complete Review Of Solaria Solar Panels - SolarReviews\](https://www.solarreviews.com/blog/reviewing-solaria-solar-panels)

Written by claude-sonnet from the figures above.


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- [ARTsolar vs Solaria](https://comparepv.com/artsolar-vs-solaria)


---

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

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