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Q-Cells vs Solitek - solar panel manufacturer comparison

Q-Cells
South Korea Founded 1999 Tier 1
Read the Q-Cells review
VS
Solitek
Lithuania Founded 2009
Read the Solitek review
At a glance

Q-Cells has the broader catalog (89 vs 49 models). Q-Cells leads on peak efficiency at 23.20%. Solitek leans bifacial (100% 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 49
Highest power
675 Wp 720 Wp
Best efficiency
23.2% 23.2%
Average efficiency
21.2% 20.4%
Bifacial share
39% 100%
Average warranty
27 yrs 30 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
Solitek

SoliTek is a European solar panel and energy storage manufacturer headquartered in Vilnius, Lithuania, and is the largest solar module producer in Northern Europe. Part of the family-owned BOD Group, the company operates a fully automated production line with approximately 250 MW of annual module capacity and exports...

Founded
2009
Headquarters
Vilnius, Lithuania
Annual capacity
0.1-0.5 GW/year
Employees
100-500
02

Catalogue against catalogue

Averages over every model in the database
Metric Q-Cells Solitek
Catalog & Power
Panel Models 89+40 49
Max Power 675 W 720 W+45 W
Avg Power 468 W+42 W 427 W
Efficiency
Max Efficiency 23.20%+0.02 pp 23.18%
Avg Efficiency 21.21%+0.79 pp 20.43%
Reliability & Warranty
Avg Temp Coefficient -0.325%/°C -0.301%/°C+0.023
Bifacial Share 35 (39%) 49 (100%)+61 pp
Avg Warranty 27.0 yrs 30.0 yrs+3.0 yr

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

Solitek skews to higher efficiency: 4% 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%)

Solitek cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>TOPCon</strong> (98%)

04

The flagships

Highest-power models from each brand
05

Written summary

Checking cache...

Q-Cells, operating under the South Korean conglomerate Hanwha Solutions, traces its roots to the German Q Cells brand and today runs the largest solar module manufacturing complex in the Western Hemisphere, with facilities in Dalton and Cartersville, Georgia producing a combined capacity of roughly 8.4 GW annually in the United States alone. The brand holds BloombergNEF Tier 1 status, reflecting its ability to finance large independent commercial projects and its deep institutional relationships with lenders and project developers worldwide. Solitek, by contrast, is a family-owned Lithuanian manufacturer founded in 2013, widely cited as the largest solar panel producer in Northern Europe with around 250 MW of annual capacity at its Vilnius plant, and is now expanding via a TOPCon-focused assembly plant in Benevento, Italy targeting up to 600 MW. No BloombergNEF Tier 1 designation for Solitek appears in current industry sources. On institutional footprint, Q-Cells is substantially larger and more bankable.

The two companies serve meaningfully different market segments. Q-Cells addresses mainstream residential and commercial rooftops globally through its Q.TRON line, which employs the company's proprietary Q.ANTUM NEO TOPCon N-type cell technology and reaches efficiencies up to 22.5%, backed by a 25-year product and performance warranty. Solitek deliberately targets niches that large Chinese and Korean manufacturers underserve - building-integrated photovoltaics, agrivoltaic installations, carports, roadside barriers, and architecturally sensitive residential projects. Its glass-glass bifacial panels carry a 30-year warranty and have earned the Cradle to Cradle gold sustainability certification, making them a standout for buyers prioritizing circular-economy credentials. Its Italian plant is adopting TOPCon cells, but much of its existing portfolio uses earlier crystalline silicon configurations.

For a typical buyer seeking bankable, high-volume residential or commercial supply in 2025, Q-Cells is the clearer default - offering proven Tier 1 status, domestic U.S. production, and a well-documented performance record. Solitek is the stronger choice for European projects with strict sustainability requirements, heritage design constraints, or specialized structural applications where its glass-glass durability and certification profile justify a smaller, more specialized supplier.

Generated by Claude Sonnet · 2026-06-11

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 25 Q-Cells offers · See 24 Solitek offers

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.