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Q-Cells vs Solaria - solar panel manufacturer comparison

Q-Cells
South Korea Founded 1999 Tier 1
Read the Q-Cells review
VS
Solaria
Spain Founded 2002
Read the Solaria review
At a glance

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).

Both catalogues are read from the manufacturers' own datasheets. A brand is not scored against the market here, only against the other brand on this page.

Panel models
89 27
Highest power
675 Wp 680 Wp
Best efficiency
23.2% 21.9%
Average efficiency
21.2% 20.0%
Bifacial share
39% 19%
Average warranty
27 yrs 26 yrs
01

The two companies

Company facts, not datasheet figures
Q-Cells

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...

Founded
1999
Headquarters
Seoul, South Korea
Annual capacity
11.2 GW/year
Employees
2000+
Tier 1 bankable
Yes
Solaria

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...

Founded
2002
Headquarters
Madrid, Spain
Annual capacity
1.658 GW/year
Employees
235
02

Catalogue against catalogue

Averages over every model in the database
Metric Q-Cells Solaria
Catalog & Power
Panel Models 89+62 27
Max Power 675 W 680 W+5 W
Avg Power 468 W+32 W 436 W
Efficiency
Max Efficiency 23.20%+1.28 pp 21.92%
Avg Efficiency 21.21%+1.25 pp 19.96%
Reliability & Warranty
Avg Temp Coefficient -0.325%/°C+0.035 -0.360%/°C
Bifacial Share 35 (39%)+21 pp 5 (19%)
Avg Warranty 27.0 yrs+0.5 yr 26.5 yrs

An average over a catalogue describes the range a manufacturer publishes, not the module you would buy. A brand with two flagship panels and eighty older ones averages worse than one that has retired its back catalogue.

03

What each of them builds

Cell technology across the market
Efficiency spread
Share of each catalogue in every efficiency band

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

Power spread
Share of each catalogue in every power band

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

Q-Cells cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>PERC</strong> (43%)

Solaria cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>TOPCon</strong> (19%)

04

The flagships

Highest-power models from each brand
05

Written summary

Checking cache...

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.

Generated by Claude Sonnet · 2026-06-14

06

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Something missing from a catalogue? Both lists are built from the datasheets in the database. If a model is absent, it has not been ingested yet.

Shop prices: See 24 Q-Cells offers · See 1 Solaria offer

Comparisons are computed from manufacturer datasheets held in the ComparePV database and may not reflect a brand's complete current lineup. Nothing on this page is paid placement.