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

# AmoSolar vs JA Solar

JA Solar has the broader catalog (504 vs 77 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | AmoSolar | JA Solar |
| --- | --- | --- |
| Country |  | China |
| Headquarters |  | Beijing |
| Founded |  | 2005 |
| Employees |  | 37,289 |
| Annual capacity |  | 100+ GW/year |
| Tier 1 | no | 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 | AmoSolar | JA Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 77 | 504 | +427 |
| Max Power | 675 W | 740 W | +65 W |
| Avg Power | 522 W | 456 W | +65 W |


## Efficiency


| Measure | AmoSolar | JA Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 22.83% | 24.80% | +1.97 pp |
| Avg Efficiency | 21.14% | 21.13% | +0.01 pp |


## Reliability & Warranty


| Measure | AmoSolar | JA Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.339%/°C | -0.322%/°C | +0.017 |
| Bifacial Share | 17 (22%) | 238 (47%) | +25 pp |
| Avg Warranty | 26.5 yrs | 27.9 yrs | +1.4 yr |


## Efficiency distribution

JA Solar skews to higher efficiency: 15% of lineup is 23%+


| Efficiency band | AmoSolar | JA Solar |
| --- | --- | --- |
| \<20% | 1 (1.3%) | 112 (22.2%) |
| 20-21% | 29 (37.7%) | 99 (19.6%) |
| 21-22% | 41 (53.2%) | 112 (22.2%) |
| 22-23% | 6 (7.8%) | 107 (21.2%) |
| 23%+ | 0 | 74 (14.7%) |


## Power distribution

AmoSolar offers more 600W+ panels (23% of lineup)


| Power band | AmoSolar | JA Solar |
| --- | --- | --- |
| \<400W | 8 (10.4%) | 142 (28.2%) |
| 400-499W | 25 (32.5%) | 173 (34.3%) |
| 500-599W | 26 (33.8%) | 120 (23.8%) |
| 600-699W | 18 (23.4%) | 60 (11.9%) |
| 700W+ | 0 | 9 (1.8%) |


## Cell technology

Dominant cell tech: **PERC** (86%)

Dominant cell tech: **PERC** (49%)


| Technology | AmoSolar | JA Solar |
| --- | --- | --- |
| PERC | 66 (85.7%) | 247 (49.0%) |
| TOPCon | 11 (14.3%) | 146 (29.0%) |
| N-type | 0 | 90 (17.9%) |
| Unknown | 0 | 16 (3.2%) |
| HJT | 0 | 5 (1.0%) |


## Top panels, AmoSolar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [AS675G12-132](https://comparepv.com/panel/amosolar-as675g12-132) | 675 | 21.7 | -0.340 | Monocrystalline |
| 2 | [AS675G12-120](https://comparepv.com/panel/amosolar-as675g12-120) | 675 | 21.7 | -0.340 | Monocrystalline |
| 3 | [AS670G12-132](https://comparepv.com/panel/amosolar-as670g12-132) | 670 | 21.6 | -0.340 | Monocrystalline |
| 4 | [AS670G12-120](https://comparepv.com/panel/amosolar-as670g12-120) | 670 | 21.5 | -0.340 | Monocrystalline |
| 5 | [AS665G12-132](https://comparepv.com/panel/amosolar-as665g12-132) | 665 | 21.4 | -0.340 | Monocrystalline |
| 6 | [AS665G12-120](https://comparepv.com/panel/amosolar-as665g12-120) | 665 | 21.4 | -0.340 | Monocrystalline |
| 7 | [AS660G12-132](https://comparepv.com/panel/amosolar-as660g12-132) | 660 | 21.2 | -0.340 | Monocrystalline |
| 8 | [AS660G12-120](https://comparepv.com/panel/amosolar-as660g12-120) | 660 | 21.2 | -0.340 | Monocrystalline |
| 9 | [AS655G12-132](https://comparepv.com/panel/amosolar-as655g12-132) | 655 | 21.1 | -0.340 | Monocrystalline |
| 10 | [AS655G12-120](https://comparepv.com/panel/amosolar-as655g12-120) | 655 | 21.0 | -0.340 | 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

AmoSolar is a relatively lesser-known solar module manufacturer without Tier 1/bankable certification, which limits its suitability for projects requiring bank or institutional financing. The company maintains a focused portfolio of 77 modules, heavily weighted toward PERC cell technology (85.71% of the lineup), with an average module power of approximately 521 Wp, average efficiency of 21.14%, and a maximum efficiency of 22.83%. Its bifacial share stands at 22.08%. JA Solar, by contrast, is one of the largest photovoltaic manufacturers in the world - founded in 2005 in China, employing over 37,000 people, with an annual production capacity exceeding 100 GW and a listing on the Shenzhen Stock Exchange (SZSE). JA Solar holds Tier 1/bankable status, giving it a major advantage in project finance contexts and long-term bankability assessments for lenders and EPCs.

AmoSolar's higher average module wattage (~521 Wp) could appeal to residential rooftop installers looking for a simplified, high-output selection, and the company has shown European ambitions by exhibiting at Smarter E Europe 2025. However, its limited third-party validation and narrow product range constrain its application to smaller private or commercial projects. JA Solar offers a substantially broader catalog of 524 modules reaching up to 740 Wp and 24.4% peak efficiency, with a 44.27% bifacial share and a slightly better average temperature coefficient for Pmax (-0.3226 vs -0.3387 %/°C). This combination makes JA Solar well-suited for residential rooftop installs, commercial and industrial (C&I) projects, and large-scale utility ground-mount deployments alike. The company was named a Top Performer in the PVEL 2025 PV Module Reliability Scorecard for the tenth time, further reinforcing its long-term reliability credentials.

For international buyers selecting between the two, JA Solar is the stronger choice across virtually all project categories - its Tier 1 status, global supply chain, superior peak efficiency, higher bifacial share, longer average warranty (~27.85 vs ~26.49 years), and independently verified reliability reduce risk substantially. AmoSolar may serve a niche where bankability is not a requirement and a buyer seeks high average wattage in a concise product selection, but the lack of broad market recognition and independent performance data remains a meaningful risk factor for any sizeable investment.

Written by claude-sonnet from the figures above.


## Other comparisons

- [AmoSolar vs A.B. Energy](https://comparepv.com/amosolar-vs-a-b-energy)
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- [AIKO vs JA Solar](https://comparepv.com/aiko-vs-ja-solar)
- [AmoSolar vs AKCOME](https://comparepv.com/amosolar-vs-akcome)
- [ARTsolar vs JA Solar](https://comparepv.com/artsolar-vs-ja-solar)


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Source: https://comparepv.com/amosolar-vs-ja-solar

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