---
title: "AU Optronics vs JA Solar - Brand Comparison | ComparePV"
description: "Compare AU Optronics vs JA Solar solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/au-optronics-vs-ja-solar"
---

# AU Optronics vs JA Solar

JA Solar has the broader catalog (504 vs 1 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | AU Optronics | JA Solar |
| --- | --- | --- |
| Country | Taiwan | China |
| Headquarters | Hsinchu | Beijing |
| Founded | 1996 | 2005 |
| Employees | 41000+ | 37,289 |
| Annual capacity |  | 100+ GW/year |
| Tier 1 | yes | yes |
| Listed | TWSE (Taiwan Stock Exchange): 2409 | SZSE: 002459 |
| Website | [https://www.auo.com/en-global](https://www.auo.com/en-global) | [https://www.jasolar.com](https://www.jasolar.com) |

AU Optronics (AUO) is a technology-driven company based in Taiwan, specializing in optoelectronics and display solutions. They deliver products and services that advance innovation in areas like display technology, system solutions, industrial intelligence, healthcare, and energy. AUO operates globally across Asia...

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 | AU Optronics | JA Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 1 | 504 | +503 |
| Max Power | 170 W | 740 W | +570 W |
| Avg Power | 170 W | 456 W | +286 W |


## Efficiency


| Measure | AU Optronics | JA Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 16.00% | 24.80% | +8.80 pp |
| Avg Efficiency | 16.00% | 21.13% | +5.13 pp |


## Reliability & Warranty


| Measure | AU Optronics | JA Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.438%/°C | -0.322%/°C | +0.116 |
| 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 | AU Optronics | JA Solar |
| --- | --- | --- |
| \<20% | 1 (100.0%) | 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 | AU Optronics | JA Solar |
| --- | --- | --- |
| \<400W | 1 (100.0%) | 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 | AU Optronics | JA Solar |
| --- | --- | --- |
| Unknown | 1 (100.0%) | 16 (3.2%) |
| PERC | 0 | 247 (49.0%) |
| TOPCon | 0 | 146 (29.0%) |
| N-type | 0 | 90 (17.9%) |
| HJT | 0 | 5 (1.0%) |


## Top panels, AU Optronics


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [ASM170M](https://comparepv.com/panel/au-optronics-asm170m) | 170 | 16.0 | -0.438 | Monocrystalline |


## 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

AU Optronics (AUO) is a Taiwanese technology conglomerate founded in 1996, with over 41,000 employees and a primary focus on TFT-LCD display manufacturing. Its solar division represents a secondary business line, which is reflected in the available product data - only one PV module is listed in the database, rated at 170 Wp with 16% efficiency, well below current industry benchmarks. AUO holds Tier 1 bankable status and is listed on the Taiwan Stock Exchange (TWSE). JA Solar, by contrast, is a dedicated solar manufacturer founded in China in 2005, employing approximately 37,300 people and operating with a production capacity exceeding 100 GW per year. The company is listed on the Shenzhen Stock Exchange (SZSE) and is ranked among the top two global solar module shippers. It also holds Tier 1 status and has been named a Top Performer in PVEL reliability testing for ten consecutive cycles through 2025.

JA Solar's portfolio of 524 module models spans a wide range of applications, with maximum output reaching 740 Wp, average efficiency at 20.87%, and a peak efficiency of 24.4%. The dominant cell technology is PERC (over 52% of the lineup), complemented by newer TOPCon-based products. Over 44% of the portfolio consists of bifacial modules, making the offering well-suited for utility-scale ground-mount and flat-roof commercial installations where rear-side irradiance can be captured. The average temperature coefficient of -0.323%/°C gives JA Solar a meaningful performance edge in warm climates over AUO's single listed module at -0.438%/°C. The average product warranty across JA Solar's catalog stands at nearly 28 years, reinforcing its position as a long-term investment option for commercial and residential buyers alike. AUO's single 170 Wp panel at 16% efficiency is not competitive for residential rooftop installs, commercial C&I projects, or utility-scale deployments by current standards.

For international buyers comparing the two, JA Solar is the clear practical choice across all project types - from residential rooftop installs to large-scale ground-mount projects - offering proven reliability, a broad and modern product lineup, and competitive pricing. AUO remains primarily a display-sector company whose solar ambitions are real (including recent awards for high-efficiency TOPCon modules and solar-plus-storage solutions) but whose current commercially available PV portfolio does not yet position it as a viable alternative to dedicated solar manufacturers like JA Solar.

Written by claude-sonnet from the figures above.


## Other comparisons

- [AU Optronics vs A.B. Energy](https://comparepv.com/au-optronics-vs-a-b-energy)
- [AE Solar vs JA Solar](https://comparepv.com/ae-solar-vs-ja-solar)
- [AU Optronics vs AEET](https://comparepv.com/au-optronics-vs-aeet)
- [AIKO vs JA Solar](https://comparepv.com/aiko-vs-ja-solar)
- [AU Optronics vs AKCOME](https://comparepv.com/au-optronics-vs-akcome)
- [ARTsolar vs JA Solar](https://comparepv.com/artsolar-vs-ja-solar)


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Source: https://comparepv.com/au-optronics-vs-ja-solar

Not in this file, on the page: the distributions above drawn as charts.