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

# Amerisolar vs JA Solar

JA Solar has the broader catalog (504 vs 27 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | Amerisolar | JA Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Shanghai | Beijing |
| Founded | 1993 | 2005 |
| Employees |  | 37,289 |
| Annual capacity | 9 GW/year | 100+ GW/year |
| Tier 1 |  | yes |
| Listed |  | SZSE: 002459 |
| Website | [https://www.weamerisolar.com](https://www.weamerisolar.com) | [https://www.jasolar.com](https://www.jasolar.com) |

Amerisolar, operating under Worldwide Energy and Manufacturing Group, is a professional solar PV module manufacturer with over 30 years of experience in production and quality control. The company operates manufacturing facilities across China, the USA, Vietnam, South Korea, and other countries, and serves markets...

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 | Amerisolar | JA Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 27 | 504 | +477 |
| Max Power | 665 W | 740 W | +75 W |
| Avg Power | 546 W | 456 W | +90 W |


## Efficiency


| Measure | Amerisolar | JA Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 22.83% | 24.80% | +1.97 pp |
| Avg Efficiency | 21.12% | 21.13% | +0.02 pp |


## Reliability & Warranty


| Measure | Amerisolar | JA Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.340%/°C | -0.322%/°C | +0.018 |
| Bifacial Share | 0 (0%) | 238 (47%) | +47 pp |
| Avg Warranty | 30.0 yrs | 27.9 yrs | +2.1 yr |


## Efficiency distribution

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


| Efficiency band | Amerisolar | JA Solar |
| --- | --- | --- |
| \<20% | 2 (7.4%) | 112 (22.2%) |
| 20-21% | 11 (40.7%) | 99 (19.6%) |
| 21-22% | 9 (33.3%) | 112 (22.2%) |
| 22-23% | 5 (18.5%) | 107 (21.2%) |
| 23%+ | 0 | 74 (14.7%) |


## Power distribution

Amerisolar offers more 600W+ panels (22% of lineup)


| Power band | Amerisolar | JA Solar |
| --- | --- | --- |
| 400-499W | 8 (29.6%) | 173 (34.3%) |
| 500-599W | 13 (48.1%) | 120 (23.8%) |
| 600-699W | 6 (22.2%) | 60 (11.9%) |
| \<400W | 0 | 142 (28.2%) |
| 700W+ | 0 | 9 (1.8%) |


## Cell technology

Dominant cell tech: **PERC** (74%)

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


| Technology | Amerisolar | JA Solar |
| --- | --- | --- |
| PERC | 20 (74.1%) | 247 (49.0%) |
| TOPCon | 7 (25.9%) | 146 (29.0%) |
| N-type | 0 | 90 (17.9%) |
| Unknown | 0 | 16 (3.2%) |
| HJT | 0 | 5 (1.0%) |


## Top panels, Amerisolar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [AS-8M132-HC-665W](https://comparepv.com/panel/artsolar-as-8m132-hc-665w) | 665 | 21.4 | -0.340 | Monocrystalline |
| 2 | [AS-8M132-HC-660W](https://comparepv.com/panel/artsolar-as-8m132-hc-660w) | 660 | 21.2 | -0.340 | Monocrystalline |
| 3 | [AS-8M132-HC-655W](https://comparepv.com/panel/artsolar-as-8m132-hc-655w) | 655 | 21.1 | -0.340 | Monocrystalline |
| 4 | [AS-8M132-HC-650W](https://comparepv.com/panel/artsolar-as-8m132-hc-650w) | 650 | 20.9 | -0.340 | Monocrystalline |
| 5 | [AS-8M132-HC-645W](https://comparepv.com/panel/artsolar-as-8m132-hc-645w) | 645 | 20.8 | -0.340 | Monocrystalline |
| 6 | [AS-8M132-HC-640W](https://comparepv.com/panel/artsolar-as-8m132-hc-640w) | 640 | 20.6 | -0.340 | Monocrystalline |
| 7 | [AS-7M144N-HC-590](https://comparepv.com/panel/artsolar-as-7m144n-hc-590) | 590 | 22.8 | -0.300 | Monocrystalline |
| 8 | [AS-7M144N-HC-585](https://comparepv.com/panel/artsolar-as-7m144n-hc-585) | 585 | 22.6 | -0.300 | Monocrystalline |
| 9 | [AS-7M144N-HC-580](https://comparepv.com/panel/artsolar-as-7m144n-hc-580) | 580 | 22.4 | -0.300 | Monocrystalline |
| 10 | [AS-7M144N-HC-575](https://comparepv.com/panel/artsolar-as-7m144n-hc-575) | 575 | 22.2 | -0.300 | 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

Amerisolar and JA Solar are both Chinese-headquartered solar module manufacturers, but they diverge sharply in scale, market standing, and portfolio breadth. Amerisolar was founded in 1993 and operates with a declared production capacity of 9 GW, maintaining a focused lineup of 27 panel models built predominantly around PERC cell technology. JA Solar, established in 2005, is a top-tier global manufacturer with production capacity exceeding 100 GW, a workforce of over 37,000 employees, and a catalogue spanning 524 models - it holds confirmed Tier 1 bankable status per Bloomberg NEF and is publicly listed on the Shenzhen Stock Exchange (SZSE). Independent reliability assessments place JA Solar among the world's top two manufacturers by shipment volume, and the company earned the PVEL Top Performer designation for the tenth consecutive time in 2025.

On the technology side, Amerisolar's portfolio centers heavily on PERC cells (74% of its lineup), with an average module output of 546 Wp and average efficiency of 21.1%, peaking at 22.83%. The brand carries no bifacial products in its current catalogue, and its average temperature coefficient stands at -0.34%/°C. Its average 30-year performance warranty is among the longest in the mid-tier segment, making it a credible option for residential rooftop installs where long-term output guarantees matter more than product diversity. JA Solar's broader portfolio includes 44.3% bifacial panels and reaches a maximum efficiency of 24.4%, supported by TOPCon and HJT product lines alongside PERC (which still accounts for 52% of its range). A slightly better average temperature coefficient of -0.323%/°C and a maximum panel output of 740 Wp give JA Solar a technical edge in utility-scale ground-mount and commercial C&I projects where yield optimization and lender bankability are decisive.

For international buyers selecting between the two, JA Solar represents the lower-risk proposition for financed or large-scale projects - its Tier 1 status, extensive supply chain, proven PVEL reliability scores, and wide bifacial offering collectively reduce procurement and long-term performance risk. Amerisolar suits buyers seeking a straightforward, warranty-backed PERC solution for smaller residential or light commercial applications, though its limited model range, absence of bifacial options, and unconfirmed bankability rating call for additional due diligence wherever project financing or institutional approval is required.

Written by claude-sonnet from the figures above.


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- [ARTsolar vs JA Solar](https://comparepv.com/artsolar-vs-ja-solar)


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

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