Deye vs JA Solar - solar panel manufacturer comparison
JA Solar has the broader catalog (504 vs 0 models). JA Solar leans bifacial (47% 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
Ningbo Deye Technology Co., Ltd. is a comprehensive technology manufacturing enterprise integrating R&D, design, production, sales, and service. The company has four core industrial chains: solar inverter systems, solar air conditioner systems, solar energy storage batteries, and dehumidifiers. Deye's products are...
- Founded
- 1990
- Headquarters
- Ningbo, China
- Annual capacity
- 5+ GW/year
- Employees
- 5000-10000
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
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%+
JA Solar offers more 600W+ panels (14% of lineup)
Dominant cell tech: <strong>PERC</strong> (49%)
The flagships
Written summary
Deye and JA Solar are both Chinese companies active in the solar energy sector, but they occupy fundamentally different market positions. Deye, founded in 1990 and listed on the Shanghai Stock Exchange, is primarily an inverter, energy storage system, and HVAC manufacturer - the company does not produce solar PV modules, and its panel portfolio is empty. JA Solar, founded in 2005 and listed on the Shenzhen Stock Exchange (SZSE), is one of the world's largest PV module manufacturers, holding Tier 1 status confirmed by both S&P Global Commodity Insights and Bloomberg NEF. With over 37,000 employees and a production capacity exceeding 100 GW, JA Solar ranks among the top two global module suppliers by shipment volume.
In terms of product strengths, Deye has built a strong reputation for its hybrid inverters and battery energy storage systems, making it a popular choice for residential rooftop installations that require reliable off-grid backup capability and seamless battery integration. JA Solar, by contrast, offers a comprehensive panel portfolio spanning 524 models, with peak output reaching 740 Wp and average module power around 442 Wp. Maximum panel efficiency reaches 24.4%, with an average of approximately 20.9% across the lineup. Around 44% of the portfolio is bifacial, the average product warranty approaches 28 years, and PERC technology accounts for over 52% of models - with TOPCon variants also available. This breadth makes JA Solar suitable for residential rooftop installs, commercial and industrial (C&I) projects, and large utility-scale ground-mount systems alike.
For international buyers, the comparison between Deye and JA Solar is less a head-to-head choice and more a question of product category. A complete solar installation may well include Deye hardware on the inverter side and JA Solar modules on the generation side. If the decision is strictly about sourcing PV panels, JA Solar - backed by verified Tier 1 bankability, a top-performer ranking in PVEL reliability testing, and broad global distribution - is the clear and only option between these two for any panel procurement need.
Generated by Claude Sonnet · 2026-05-13
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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.