--- title: "Dyness vs JA Solar - Brand Comparison | ComparePV" description: "Compare Dyness vs JA Solar solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/dyness-vs-ja-solar" --- # Dyness vs JA Solar JA Solar has the broader catalog (504 vs 0 models). JA Solar leans bifacial (47% of lineup). ## The two companies | Attribute | Dyness | JA Solar | | --- | --- | --- | | Country | China | China | | Headquarters | Suzhou | Beijing | | Founded | 2017 | 2005 | | Employees | 200+ | 37,289 | | Annual capacity | 3+ GW/year | 100+ GW/year | | Tier 1 | | yes | | Listed | | SZSE: 002459 | | Website | [https://www.dynesspower.com](https://www.dynesspower.com) | [https://www.jasolar.com](https://www.jasolar.com) | Dyness is a global innovator in energy storage solutions, specializing in battery system integration R&D and manufacturing. They provide lithium iron phosphate (LFP) battery solutions for residential, commercial, and industrial applications. Dyness serves over 500,000 users in 100+ countries, partnering with 90+... 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 | Dyness | 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 | Dyness | JA Solar | Margin | | --- | --- | --- | --- | | Max Efficiency | - | 24.80% | | | Avg Efficiency | - | 21.13% | | ## Reliability & Warranty | Measure | Dyness | 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 | Dyness | 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 | Dyness | 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 | Dyness | 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 Dyness and JA Solar are both Chinese manufacturers operating in the broader solar energy sector, but they occupy fundamentally different product categories. JA Solar was founded in 2005, employs over 37,000 people, and is one of the world's top two solar panel producers by shipment volume, with production capacity exceeding 100 GW and confirmed Tier 1 bankable status - listed on the Shenzhen Stock Exchange (SZSE). Dyness, founded in 2017 with 200+ employees and over 3 GW of production capacity, is not a solar panel manufacturer at all: the company specializes exclusively in battery energy storage systems (BESS) using LiFePO4 chemistry, distributed across 100+ countries through 14 global branches. JA Solar's panel portfolio spans 524 models, reaching a maximum output of 740 Wp and a peak module efficiency of 24.4%, with PERC technology representing the majority of the lineup (over 52%) alongside a growing TOPCon offering. An average power output of approximately 442 Wp and an average temperature coefficient of around -0.32%/°C per Pmax make JA Solar panels well-suited to utility-scale ground-mount projects, commercial C&I rooftop installations, and residential rooftop systems alike. Dyness, by contrast, addresses the storage side of the equation - its Tower and PowerBox product lines deliver modular LiFePO4 storage with 6,000+ cycles at 80% depth of discharge, 95% round-trip efficiency, and scalable capacity, making them practical for residential self-consumption and small commercial applications. For international buyers or installers, the two brands are better understood as complementary rather than competing: JA Solar is a logical choice wherever bankable, high-volume panel supply is required, while Dyness serves the energy storage portion of the same project. Evaluating them as direct alternatives is a category error - a buyer seeking solar panels should look at JA Solar's broad, well-validated portfolio, while a buyer seeking an integrated storage solution might pair JA Solar panels with a Dyness battery system rather than choosing between the two. Written by claude-sonnet from the figures above. ## Other comparisons - [Dyness vs A.B. Energy](https://comparepv.com/dyness-vs-a-b-energy) - [AE Solar vs JA Solar](https://comparepv.com/ae-solar-vs-ja-solar) - [Dyness vs AEET](https://comparepv.com/dyness-vs-aeet) - [AIKO vs JA Solar](https://comparepv.com/aiko-vs-ja-solar) - [Dyness vs AKCOME](https://comparepv.com/dyness-vs-akcome) - [ARTsolar vs JA Solar](https://comparepv.com/artsolar-vs-ja-solar) --- Source: https://comparepv.com/dyness-vs-ja-solar