JA Solar vs Q-Cells - solar panel manufacturer comparison
JA Solar has the broader catalog (504 vs 89 models). JA Solar leads on peak efficiency at 24.80%.
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
JA Solar is a global leader in the manufacturing of high-performance photovoltaic products. Founded in 2005, the company designs, develops, manufactures, and sells solar cells and modules. JA Solar's products are used in ground-mounted power plants, commercial & industrial rooftop PV systems, and residential rooftop...
- Founded
- 2005
- Headquarters
- Beijing, China
- Annual capacity
- 100+ GW/year
- Employees
- 37,289
- Listed
- SZSE: 002459
- Tier 1 bankable
- Yes
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
JA Solar skews to higher efficiency: 15% of lineup is 23%+
Q-Cells offers more 600W+ panels (19% of lineup)
Dominant cell tech: <strong>PERC</strong> (49%)
Dominant cell tech: <strong>PERC</strong> (43%)
The flagships
Written summary
JA Solar was founded in 2005 in China and has grown into one of the world's largest solar manufacturers, with a workforce exceeding 37,000 employees and a production capacity of over 100 GW per year. Q-Cells, now operating as Hanwha Q CELLS under South Korean conglomerate Hanwha, was founded in 1999 and carries a production capacity of 11.2 GW. Both manufacturers hold Tier 1 bankable status - JA Solar is listed on the Shenzhen Stock Exchange (SZSE) and Q-Cells on NASDAQ. The scale difference is substantial: JA Solar's catalogue spans 524 panel models compared to Q-Cells' 91, reflecting the Chinese manufacturer's strategy of covering the entire market spectrum from residential to utility. JA Solar achieved second place and Q-Cells third place in SolarReviews' 2025 manufacturer rankings, underlining that both are widely regarded as top-tier choices.
Both manufacturers lead their portfolios with PERC cell technology - accounting for 52% of JA Solar's lineup and 38% of Q-Cells'. JA Solar reaches a maximum panel output of 740 Wp and a peak module efficiency of 24.4%, positioning it strongly for utility-scale ground-mount projects and large commercial C&I installations where maximising output per string and minimising cost-per-watt are the primary drivers. Q-Cells achieves a slightly higher average portfolio efficiency of 21.26% versus 20.87% for JA Solar, and its proprietary Q.ANTUM technology incorporates anti-PID and anti-LID safeguards that appeal to buyers in demanding climates. Q-Cells also operates the largest solar manufacturing facility in the Western Hemisphere in Dalton, Georgia - a compliance advantage in markets that favour Western supply chains. Warranty terms across both portfolios are comparable: JA Solar averages 27.85 years and Q-Cells 27.09 years. Bifacial panel share is similar at 44.3% for JA Solar and 41.8% for Q-Cells.
Buyers choosing between the two will generally find JA Solar the stronger option for price-sensitive, large-scale deployments where output variety and supply reliability matter most. Q-Cells suits projects where premium brand perception, Western manufacturing credentials, or proven anti-degradation technology in residential or commercial rooftop contexts are the deciding factors.
Generated by Claude Sonnet · 2026-05-12
Other brand comparisons
Shop prices: See 389 JA Solar 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.