--- title: "JA Solar vs Solarfam - Brand Comparison | ComparePV" description: "Compare JA Solar vs Solarfam solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/ja-solar-vs-solarfam" --- # JA Solar vs Solarfam JA Solar has the broader catalog (504 vs 0 models). JA Solar leans bifacial (47% of lineup). ## The two companies | Attribute | JA Solar | Solarfam | | --- | --- | --- | | Country | China | Netherlands | | Headquarters | Beijing | Nieuwegein | | Founded | 2005 | | | Employees | 37,289 | | | Annual capacity | 100+ GW/year | | | Tier 1 | yes | | | Listed | SZSE: 002459 | | | Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.solarfam.nl](https://www.solarfam.nl) | 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... Solarfam is a Dutch solar energy brand operating under the parent company Solmax New Energy B.V. The company distributes and sells solar panels, inverters, batteries, controllers, and water pump systems, targeting both residential and agricultural markets. It positions itself as a sales and integration brand sourcing... ## Catalog & Power | Measure | JA Solar | Solarfam | Margin | | --- | --- | --- | --- | | Panel Models | 504 | 0 | +504 | | Max Power | 740 W | 0 W | +740 W | | Avg Power | 456 W | 0 W | +456 W | ## Efficiency | Measure | JA Solar | Solarfam | Margin | | --- | --- | --- | --- | | Max Efficiency | 24.80% | - | | | Avg Efficiency | 21.13% | - | | ## Reliability & Warranty | Measure | JA Solar | Solarfam | Margin | | --- | --- | --- | --- | | Avg Temp Coefficient | -0.322%/°C | - | | | Bifacial Share | 238 (47%) | 0 (0%) | +47 pp | | Avg Warranty | 27.9 yrs | - | | ## Efficiency distribution JA Solar skews to higher efficiency: 15% of lineup is 23%+ | Efficiency band | JA Solar | Solarfam | | --- | --- | --- | | \<20% | 112 (22.2%) | 0 | | 20-21% | 99 (19.6%) | 0 | | 21-22% | 112 (22.2%) | 0 | | 22-23% | 107 (21.2%) | 0 | | 23%+ | 74 (14.7%) | 0 | ## Power distribution JA Solar offers more 600W+ panels (14% of lineup) | Power band | JA Solar | Solarfam | | --- | --- | --- | | \<400W | 142 (28.2%) | 0 | | 400-499W | 173 (34.3%) | 0 | | 500-599W | 120 (23.8%) | 0 | | 600-699W | 60 (11.9%) | 0 | | 700W+ | 9 (1.8%) | 0 | ## Cell technology Dominant cell tech: **PERC** (49%) | Technology | JA Solar | Solarfam | | --- | --- | --- | | PERC | 247 (49.0%) | 0 | | TOPCon | 146 (29.0%) | 0 | | N-type | 90 (17.9%) | 0 | | Unknown | 16 (3.2%) | 0 | | HJT | 5 (1.0%) | 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 JA Solar and Solarfam represent vastly different tiers of the global solar manufacturing industry. JA Solar was founded in 2005 in China and has grown into one of the world's largest solar module producers, ranked second globally by shipment volume. The company employs over 37,000 people, holds a production capacity exceeding 100 GW annually, and carries Tier 1 bankable status - making it a standard reference point for project financiers and institutional buyers worldwide. It is publicly listed on the Shenzhen Stock Exchange and has earned the PVEL "Top Performer" designation for ten consecutive years through 2025. Solarfam, operating under the Solmax New Energy group and headquartered in Nieuwegein, Netherlands, is a considerably smaller entity focused on micro-grid solutions, solar pumping systems for agriculture and pools, and regional distribution within Western Europe. No Tier 1 classification is associated with Solarfam, and the available industry databases contain no panel portfolio data for the brand, which makes direct technical comparison impossible. JA Solar's portfolio of 524 panel models spans a wide power range, with a maximum output of 740 Wp and a maximum efficiency of 24.4%, with the average panel sitting at roughly 20.9% efficiency. Over 52% of the lineup is built on PERC cell technology, while the newer DeepBlue 5.0 series introduces n-type TOPCon cells reaching up to 650 W and 24.07% efficiency, positioning JA Solar at the frontier of mainstream module technology. The average temperature coefficient of approximately -0.323%/°C and an average warranty period of nearly 28 years round out a technically competitive offering. JA Solar panels are well suited for residential rooftop installations, large commercial C&I projects, and utility-scale ground-mount farms. Solarfam's focus on micro-grid and pumping applications means it serves a narrower niche where off-grid reliability and local logistics matter more than peak wattage or efficiency benchmarks. For international buyers choosing between the two, JA Solar is the clear choice for any standard grid-tied photovoltaic project requiring bankable, high-volume supply with a proven track record. Solarfam may be relevant only for specific autonomous or agricultural pumping applications in markets where proximity to the Netherlands offers a logistical or after-sales service advantage - but it cannot be evaluated as a direct competitor to JA Solar on panel performance or production scale. Written by claude-sonnet from the figures above. ## Other comparisons - [JA Solar vs A.B. Energy](https://comparepv.com/ja-solar-vs-a-b-energy) - [AE Solar vs Solarfam](https://comparepv.com/ae-solar-vs-solarfam) - [JA Solar vs AEET](https://comparepv.com/ja-solar-vs-aeet) - [AIKO vs Solarfam](https://comparepv.com/aiko-vs-solarfam) - [JA Solar vs AKCOME](https://comparepv.com/ja-solar-vs-akcome) - [ARTsolar vs Solarfam](https://comparepv.com/artsolar-vs-solarfam) --- Source: https://comparepv.com/ja-solar-vs-solarfam Not in this file, on the page: the distributions above drawn as charts.