--- title: "Deye vs JA Solar - Brand Comparison | ComparePV" description: "Compare Deye vs JA Solar solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/deye-vs-ja-solar" --- # Deye vs JA Solar JA Solar has the broader catalog (504 vs 0 models). JA Solar leans bifacial (47% of lineup). ## The two companies | Attribute | Deye | JA Solar | | --- | --- | --- | | Country | China | China | | Headquarters | Ningbo | Beijing | | Founded | 1990 | 2005 | | Employees | 5000-10000 | 37,289 | | Annual capacity | 5+ GW/year | 100+ GW/year | | Tier 1 | | yes | | Listed | Shanghai Stock Exchange: 605117:SHH | SZSE: 002459 | | Website | [http://www.deye.com.cn/](http://www.deye.com.cn/) | [https://www.jasolar.com](https://www.jasolar.com) | 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... 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... ## Catalog & Power | Measure | Deye | JA Solar | Margin | | --- | --- | --- | --- | | Panel Models | 0 | 504 | +504 | | Max Power | 0 W | 740 W | +740 W | | Avg Power | 0 W | 456 W | +456 W | ## Efficiency | Measure | Deye | JA Solar | Margin | | --- | --- | --- | --- | | Max Efficiency | - | 24.80% | | | Avg Efficiency | - | 21.13% | | ## Reliability & Warranty | Measure | Deye | JA Solar | Margin | | --- | --- | --- | --- | | Avg Temp Coefficient | - | -0.322%/°C | | | Bifacial Share | 0 (0%) | 238 (47%) | +47 pp | | Avg Warranty | - | 27.9 yrs | | ## Efficiency distribution JA Solar skews to higher efficiency: 15% of lineup is 23%+ | Efficiency band | Deye | JA Solar | | --- | --- | --- | | \<20% | 0 | 112 (22.2%) | | 20-21% | 0 | 99 (19.6%) | | 21-22% | 0 | 112 (22.2%) | | 22-23% | 0 | 107 (21.2%) | | 23%+ | 0 | 74 (14.7%) | ## Power distribution JA Solar offers more 600W+ panels (14% of lineup) | Power band | Deye | JA Solar | | --- | --- | --- | | \<400W | 0 | 142 (28.2%) | | 400-499W | 0 | 173 (34.3%) | | 500-599W | 0 | 120 (23.8%) | | 600-699W | 0 | 60 (11.9%) | | 700W+ | 0 | 9 (1.8%) | ## Cell technology Dominant cell tech: **PERC** (49%) | Technology | Deye | JA Solar | | --- | --- | --- | | PERC | 0 | 247 (49.0%) | | TOPCon | 0 | 146 (29.0%) | | N-type | 0 | 90 (17.9%) | | Unknown | 0 | 16 (3.2%) | | HJT | 0 | 5 (1.0%) | ## Top panels, JA Solar | # | Model | Power | Efficiency | Temp. coefficient | Technology | | --- | --- | --- | --- | --- | --- | | 1 | [JAM66D46-740/LB](https://comparepv.com/panel/ja-solar-jam66d46-740-lb) | 740 | 23.8 | -0.290 | Monocrystalline | | 2 | [JAM66D46-735/LB](https://comparepv.com/panel/ja-solar-jam66d46-735-lb) | 735 | 23.7 | -0.290 | Monocrystalline | | 3 | [JAM66D46-730/LB](https://comparepv.com/panel/ja-solar-jam66d46-730-lb) | 730 | 23.5 | -0.290 | Monocrystalline | | 4 | [JAM66D46-725/LB](https://comparepv.com/panel/ja-solar-jam66d46-725-lb) | 725 | 23.3 | -0.290 | Monocrystalline | | 5 | [JAM66D46-720/LB](https://comparepv.com/panel/ja-solar-jam66d46-720-lb) | 720 | 23.2 | -0.290 | Monocrystalline | | 6 | [JAM66D46-715/LB](https://comparepv.com/panel/ja-solar-jam66d46-715-lb) | 715 | 23.0 | -0.290 | Monocrystalline | | 7 | [JAM66D46-710/LB](https://comparepv.com/panel/ja-solar-jam66d46-710-lb) | 710 | 22.9 | -0.290 | Monocrystalline | | 8 | [JAM66D46-705/LB](https://comparepv.com/panel/ja-solar-jam66d46-705-lb) | 705 | 22.7 | -0.290 | Monocrystalline | | 9 | [JAM66D46-700/LB](https://comparepv.com/panel/ja-solar-jam66d46-700-lb) | 700 | 22.5 | -0.290 | Monocrystalline | | 10 | [JAM66D46-695/LB](https://comparepv.com/panel/ja-solar-jam66d46-695-lb) | 695 | 22.4 | -0.290 | Monocrystalline | ## 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. Written by claude-sonnet from the figures above. ## Other comparisons - [Deye vs A.B. Energy](https://comparepv.com/deye-vs-a-b-energy) - [AE Solar vs JA Solar](https://comparepv.com/ae-solar-vs-ja-solar) - [Deye vs AEET](https://comparepv.com/deye-vs-aeet) - [AIKO vs JA Solar](https://comparepv.com/aiko-vs-ja-solar) - [Deye vs AKCOME](https://comparepv.com/deye-vs-akcome) - [ARTsolar vs JA Solar](https://comparepv.com/artsolar-vs-ja-solar) --- Source: https://comparepv.com/deye-vs-ja-solar