Bisol vs Q-Cells - solar panel manufacturer comparison
Q-Cells has the broader catalog (89 vs 12 models). Bisol leads on peak efficiency at 23.50%. 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.
The two companies
BISOL Group is a European manufacturer of high-quality photovoltaic modules headquartered in Prebold, Slovenia. Founded in 2004, it is considered Europe's leading authentic solar module producer with a production capacity of 750 MW and products distributed in over 120 countries. The company operates debt-free and has...
- Founded
- 2004
- Headquarters
- Prebold, Slovenia
- Annual capacity
- <1 GW/year
- Employees
- 200-500
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
Bisol skews to higher efficiency: 33% of lineup is 23%+
Q-Cells offers more 600W+ panels (19% of lineup)
Dominant cell tech: <strong>PERC</strong> (58%)
Dominant cell tech: <strong>PERC</strong> (43%)
The flagships
Written summary
Bisol is a Slovenian manufacturer founded in 2004 and headquartered in Prebold, Slovenia. It is widely cited as Europe's largest authentic PV module producer, with an annual production capacity of approximately 750 MW - a figure supported by reporting on the company's planned capacity expansion through a new Slovenian plant scheduled to begin production by late 2027. Bisol is not explicitly listed on the BloombergNEF Tier 1 panel but is considered a bankable, established European brand. Q-Cells, by contrast, is a brand with German engineering roots - originally founded in Germany in 1999 - now owned by South Korean conglomerate Hanwha Group since 2012. Hanwha Qcells holds confirmed BloombergNEF Tier 1 status and has been named an S&P Global 2025 Tier 1 Cleantech company. Its global module production capacity stands at roughly 11 GW per year, with major manufacturing in South Korea, Malaysia, and a large US facility in Cartersville, Georgia. On institutional footprint and scale, Q-Cells is in a different league.
Bisol targets the premium European residential and commercial rooftop segment, emphasizing European design and manufacturing as quality differentiators. The company has adopted TOPCon cell technology in part of its lineup and markets a 30-year product warranty as a headline offer. Q-Cells serves a broader market - residential rooftops in the US and Europe, mid-scale commercial, and increasingly utility-adjacent projects - through product families like Q.PEAK DUO and Q.TRON, the latter using the proprietary Q.ANTUM passivation approach and reaching efficiency ratings that SolarReviews and EnergySage place among the best available in the residential segment.
For most buyers outside Europe, Q-Cells is the more practical default: wider installer network, deeper warranty support infrastructure, and consistent Tier 1 bankability. Bisol is a credible premium choice for European rooftop projects where locally manufactured panels carry regulatory or financing advantages, but it cannot match Q-Cells in global reach or institutional backing.
Generated by Claude Sonnet · 2026-06-26
Other brand comparisons
Shop prices: See 12 Bisol offers · See 25 Q-Cells 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.