--- title: "JA Solar vs Tesla - Brand Comparison | ComparePV" description: "Compare JA Solar vs Tesla solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/ja-solar-vs-tesla" --- # JA Solar vs Tesla JA Solar has the broader catalog (504 vs 0 models). JA Solar leans bifacial (47% of lineup). ## The two companies | Attribute | JA Solar | Tesla | | --- | --- | --- | | Country | China | USA | | Headquarters | Beijing | Austin | | Founded | 2005 | 2003 | | Employees | 37,289 | 100000+ | | Annual capacity | 100+ GW/year | | | Tier 1 | yes | | | Listed | SZSE: 002459 | NASDAQ: TSLA | | Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.tesla.com](https://www.tesla.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... Tesla, Inc. is an American multinational automotive and clean energy company headquartered in Austin, Texas. The company designs, manufactures, and sells electric vehicles, battery energy storage devices, solar panels and solar roof tiles, and related products and services. Tesla is working towards end-to-end solar... ## Catalog & Power | Measure | JA Solar | Tesla | 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 | Tesla | Margin | | --- | --- | --- | --- | | Max Efficiency | 24.80% | - | | | Avg Efficiency | 21.13% | - | | ## Reliability & Warranty | Measure | JA Solar | Tesla | 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 | Tesla | | --- | --- | --- | | \<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 | Tesla | | --- | --- | --- | | \<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 | Tesla | | --- | --- | --- | | 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 Tesla represent fundamentally different types of players in the solar photovoltaic industry. JA Solar, founded in 2005 and headquartered in China with shares listed on the Shenzhen Stock Exchange, is one of the world's largest dedicated PV module manufacturers. The company employs over 37,000 people, operates production capacity exceeding 100 GW, and holds Tier 1 bankable status - a critical credential for project financing. Its certified panel portfolio spans over 520 models, reaching up to 740 Wp in peak power and up to 24.4% cell efficiency, with an average portfolio efficiency of approximately 20.9%. Tesla, founded in 2003 and listed on NASDAQ, is primarily an electric vehicle and energy storage company. It does not manufacture solar panels in the conventional sense and carries no Tier 1 standing as a module producer. The comparative data reflects this directly - Tesla has zero panels listed in the product database, consistent with its reliance on third-party-sourced or rebranded modules rather than an independent manufacturing line. Tesla's solar business has also faced sustained decline in recent quarters, with the company stopping public reporting of solar installation figures. In terms of use cases, JA Solar serves a broad spectrum of applications globally: residential rooftop installs benefit from its wide wattage range and strong temperature coefficients averaging -0.32%/°C, while its bifacial module share of over 44% makes it well suited for utility-scale ground-mount projects and commercial C&I installations seeking higher energy yield. The average warranty period of nearly 28 years and repeated PVEL Top Performer recognition reinforce its suitability for bankable, long-horizon projects. Tesla's solar offering, centered on its T400H panel bundled with Powerwall energy storage, targets exclusively the US residential market - its vertical integration with home battery systems is its primary differentiator, though customer service challenges and limited geographic availability constrain its broader appeal. For international buyers comparing the two as module suppliers, JA Solar is the only viable candidate. It offers a mature, certified, and globally distributed product lineup with verified Tier 1 status and manufacturing scale. Tesla is not a meaningful competitor in the standalone solar panel market outside the United States, and its panel portfolio lacks the breadth, independent certification depth, and geographic distribution that commercial or utility-scale buyers require. 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 Tesla](https://comparepv.com/ae-solar-vs-tesla) - [JA Solar vs AEET](https://comparepv.com/ja-solar-vs-aeet) - [AIKO vs Tesla](https://comparepv.com/aiko-vs-tesla) - [JA Solar vs AKCOME](https://comparepv.com/ja-solar-vs-akcome) - [ARTsolar vs Tesla](https://comparepv.com/artsolar-vs-tesla) --- Source: https://comparepv.com/ja-solar-vs-tesla Not in this file, on the page: the distributions above drawn as charts.