Q-Cells vs Solarwatt - solar panel manufacturer comparison
Q-Cells has the broader catalog (89 vs 44 models). Q-Cells leads on peak efficiency at 23.20%. Solarwatt leans bifacial (50% 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.
The two companies
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+
- Listed
- NASDAQ: HQCL
- Tier 1 bankable
- Yes
Catalogue against catalogue
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.
What each of them builds
Solarwatt skews to higher efficiency: 2% of lineup is 23%+
Q-Cells offers more 600W+ panels (19% of lineup)
Dominant cell tech: <strong>PERC</strong> (43%)
Dominant cell tech: <strong>PERC</strong> (77%)
The flagships
Written summary
Q-Cells, operating today as Hanwha Qcells, was founded in Germany in 1999 and acquired by South Korean conglomerate Hanwha Group in 2012, with its global headquarters now split between Seoul and Thalheim, Germany. The brand holds Bloomberg NEF Tier 1 status - confirming that multiple commercial banks have financed non-recourse projects using its modules - and operates at considerable scale, with global module production capacity exceeding 11 GW annually and a US manufacturing footprint in Georgia that represents the largest silicon solar module output in the Western Hemisphere. Solarwatt, by contrast, is a smaller, premium-focused German brand founded in Dresden in 1993 and majority-owned by BMW shareholder Stefan Quandt; it does not appear on the Bloomberg Tier 1 list, though its private ownership structure is considered financially stable. In April 2024 Solarwatt closed its 300 MW Dresden manufacturing plant, shifting module production to Asian contract partners, which meaningfully reduces any "made in Europe" positioning it once held. On institutional footprint, Qcells holds a clear advantage.
For product strategy, Qcells offers a broad portfolio spanning residential rooftops, commercial flat roofs, and utility-scale ground mounts. Its current flagship technology is Q.ANTUM NEO, a TOPCon-based cell architecture, with the company also investing in perovskite-silicon tandem research for future generations. Solarwatt has long differentiated itself through glass-glass module construction - encasing cells between two glass panes rather than a glass-foil laminate - which improves durability and supports an unusually long performance warranty of around 30 years. Its panels are positioned firmly at the premium residential and prosumer segment rather than large commercial or utility projects.
For a typical residential or small commercial buyer in 2025, Qcells offers broader installer availability, bankable warranties backed by a global manufacturing giant, and well-documented TOPCon performance. Solarwatt is the more compelling choice for buyers who specifically want glass-glass durability and a very long warranty horizon, accepting a smaller, less-liquid supplier network in return.
Generated by Claude Sonnet · 2026-06-12
Other brand comparisons
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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.