--- title: "JA Solar vs Maxx - Brand Comparison | ComparePV" description: "Compare JA Solar vs Maxx solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/ja-solar-vs-maxx" --- # JA Solar vs Maxx JA Solar has the broader catalog (504 vs 0 models). JA Solar leans bifacial (47% of lineup). ## The two companies | Attribute | JA Solar | Maxx | | --- | --- | --- | | Country | China | | | Headquarters | Beijing | | | 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) | | 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 | JA Solar | Maxx | 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 | Maxx | Margin | | --- | --- | --- | --- | | Max Efficiency | 24.80% | - | | | Avg Efficiency | 21.13% | - | | ## Reliability & Warranty | Measure | JA Solar | Maxx | 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 | Maxx | | --- | --- | --- | | \<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 | Maxx | | --- | --- | --- | | \<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 | Maxx | | --- | --- | --- | | 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 is a Chinese photovoltaic manufacturer founded in 2005, headquartered in Hefei, China, and listed on the Shenzhen Stock Exchange (SZSE). With a workforce of over 37,000 employees and a module production capacity exceeding 100 GW, it consistently ranks among the world's top-tier PV producers. The company holds Tier 1 bankable status from both BloombergNEF and S&P Global Commodity Insights, and jointly topped Wood Mackenzie's Global Solar Module Manufacturer Ranking for the first half of 2025, reflecting both its financial stability and shipping scale. Maxx, by contrast, is not an identifiable solar panel manufacturer - no verifiable production capacity, panel portfolio, certifications, or industry rankings have been found for this brand, making a symmetric comparison impossible. JA Solar's catalogued portfolio of 524 panels is anchored by PERC cell technology (52% of the lineup), with a growing share of TOPCon modules representing the company's push toward next-generation efficiency. Maximum panel output reaches 740 Wp, average portfolio efficiency sits at approximately 20.9%, and peak module efficiency reaches 24.4%. An average temperature coefficient of -0.32%/°C supports reliable real-world output in warm climates. Roughly 44% of the lineup consists of bifacial modules, which are particularly valuable in utility-scale ground-mount and commercial C&I projects seeking rear-side energy gains. The average warranty across the portfolio stands at nearly 28 years, and JA Solar earned Top Performer status in PVEL's 2025 reliability testing for the tenth consecutive time. For residential rooftop installs, its mid-range PERC and entry-level TOPCon modules offer a strong price-to-performance ratio. Maxx has no documented panel data against which any technical comparison can be drawn. For international buyers - including procurement teams active in the Polish and broader European market - JA Solar represents a low-risk, high-credibility choice backed by bankability ratings, diversified technology, and an established European distribution and warranty-service network. Maxx cannot be responsibly evaluated as an alternative until verifiable product specifications, manufacturer credentials, and bankability status become available. 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 Maxx](https://comparepv.com/ae-solar-vs-maxx) - [JA Solar vs AEET](https://comparepv.com/ja-solar-vs-aeet) - [AIKO vs Maxx](https://comparepv.com/aiko-vs-maxx) - [JA Solar vs AKCOME](https://comparepv.com/ja-solar-vs-akcome) - [ARTsolar vs Maxx](https://comparepv.com/artsolar-vs-maxx) --- Source: https://comparepv.com/ja-solar-vs-maxx Not in this file, on the page: the distributions above drawn as charts.