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

# JA Solar vs Mysolar USA

JA Solar has the broader catalog (504 vs 15 models). JA Solar leads on peak efficiency at 24.80%. Mysolar USA leans bifacial (100% of lineup).


## The two companies


| Attribute | JA Solar | Mysolar USA |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Beijing | Shanghai |
| Founded | 2005 | 2010 |
| Employees | 37,289 | 60 |
| Annual capacity | 100+ GW/year | 3.2 GW/year |
| Tier 1 | yes |  |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.mamibot.com/](https://www.mamibot.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...

Mysolar is a sub-brand of Mamibot, specializing in designing and manufacturing high-efficiency solar panels using state-of-the-art technology. The company aims to become a Tier 1 solar panel manufacturer, offering a wide range of modules for residential and commercial projects. Mysolar is committed to rewriting the...


## Catalog & Power


| Measure | JA Solar | Mysolar USA | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 15 | +489 |
| Max Power | 740 W | 720 W | +20 W |
| Avg Power | 456 W | 610 W | +154 W |


## Efficiency


| Measure | JA Solar | Mysolar USA | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 23.17% | +1.63 pp |
| Avg Efficiency | 21.13% | 22.42% | +1.29 pp |


## Reliability & Warranty


| Measure | JA Solar | Mysolar USA | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.283%/°C | +0.039 |
| Bifacial Share | 238 (47%) | 15 (100%) | +53 pp |
| Avg Warranty | 27.9 yrs | 30.0 yrs | +2.1 yr |


## Efficiency distribution

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


| Efficiency band | JA Solar | Mysolar USA |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 0 |
| 21-22% | 112 (22.2%) | 3 (20.0%) |
| 22-23% | 107 (21.2%) | 10 (66.7%) |
| 23%+ | 74 (14.7%) | 2 (13.3%) |


## Power distribution

Mysolar USA offers more 600W+ panels (67% of lineup)


| Power band | JA Solar | Mysolar USA |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 0 |
| 400-499W | 173 (34.3%) | 5 (33.3%) |
| 500-599W | 120 (23.8%) | 0 |
| 600-699W | 60 (11.9%) | 4 (26.7%) |
| 700W+ | 9 (1.8%) | 6 (40.0%) |


## Cell technology

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

Dominant cell tech: **TOPCon** (67%)


| Technology | JA Solar | Mysolar USA |
| --- | --- | --- |
| PERC | 247 (49.0%) | 0 |
| TOPCon | 146 (29.0%) | 10 (66.7%) |
| N-type | 90 (17.9%) | 0 |
| Unknown | 16 (3.2%) | 0 |
| HJT | 5 (1.0%) | 5 (33.3%) |


## 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 |


## Top panels, Mysolar USA


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [MS720N-HJTGB](https://comparepv.com/panel/mysolar-usa-ms720n-hjtgb) | 720 | 23.2 | -0.260 | Monocrystalline |
| 2 | [MS715N-HJTGB](https://comparepv.com/panel/mysolar-usa-ms715n-hjtgb) | 715 | 23.0 | -0.260 | Monocrystalline |
| 3 | [MS710N-HJTGB](https://comparepv.com/panel/mysolar-usa-ms710n-hjtgb) | 710 | 22.9 | -0.260 | Monocrystalline |
| 4 | [MS705N-HJTGB](https://comparepv.com/panel/mysolar-usa-ms705n-hjtgb) | 705 | 22.7 | -0.260 | Monocrystalline |
| 5 | [MS700N-DHBG](https://comparepv.com/panel/mysolar-usa-ms700n-dhbg) | 700 | 22.5 | -0.300 | Monocrystalline |
| 6 | [MS700N-HJTGB](https://comparepv.com/panel/mysolar-usa-ms700n-hjtgb) | 700 | 22.5 | -0.260 | Monocrystalline |
| 7 | [MS695N-DHBG](https://comparepv.com/panel/mysolar-usa-ms695n-dhbg) | 695 | 22.4 | -0.300 | Monocrystalline |
| 8 | [MS690N-DHBG](https://comparepv.com/panel/mysolar-usa-ms690n-dhbg) | 690 | 22.2 | -0.300 | Monocrystalline |
| 9 | [MS685N-DHBG](https://comparepv.com/panel/mysolar-usa-ms685n-dhbg) | 685 | 22.1 | -0.300 | Monocrystalline |
| 10 | [MS680N-DHBG](https://comparepv.com/panel/mysolar-usa-ms680n-dhbg) | 680 | 21.9 | -0.300 | Monocrystalline |


## Summary

JA Solar and Mysolar USA are both Chinese-origin solar module manufacturers, but they occupy fundamentally different positions in the global PV market. JA Solar, founded in 2005 and publicly listed on the Shenzhen Stock Exchange, is one of the largest solar manufacturers in the world, with production capacity exceeding 100 GW and a workforce of over 37,000 employees. It holds confirmed Tier 1 bankable status from S&P Global Commodity Insights and BloombergNEF, and was jointly ranked first in Wood Mackenzie's Global Solar Module Manufacturer Ranking for H1 2025. Mysolar USA, founded in 2010 as a brand under the Mamibot USA umbrella, operates on a much smaller scale - approximately 60 employees and 3.2 GW of production capacity - and does not hold Tier 1 status. With only 15 panel models in its portfolio versus JA Solar's 524, it is a niche player rather than a broad-market supplier.

Despite the scale gap, Mysolar USA's current product portfolio skews heavily toward premium high-power modules: average panel power of 610 Wp versus JA Solar's 441.68 Wp, average efficiency of 22.42% versus 20.87%, a 100% bifacial rate versus JA Solar's 44.27%, a better average temperature coefficient of Pmax (-0.283%/°C versus -0.323%/°C), and a longer average product warranty of 30 years versus JA Solar's 27.85 years. JA Solar's dominant cell technology remains PERC (over 52% of the portfolio), though it has expanded its TOPCon lineup with the Deep Blue 4.0 series, while Mysolar USA already positions TOPCon as its leading technology at 66.7% of its range. For utility-scale ground-mount projects, JA Solar is the safer institutional choice given its bankability credentials, supply chain scale, and established European distribution. For residential rooftop installs requiring broad model availability and well-documented field reliability, JA Solar again dominates by depth of catalog. Mysolar USA fits best in commercial C&I or space-constrained rooftop applications where high per-panel output and strong thermal performance justify a premium positioning.

For international buyers - particularly in European markets - JA Solar offers the confidence of a Tier 1 bankable brand with extensive third-party reliability validation (including top-performer status in PVEL's 2025 scorecard), straightforward project financing, and broad product availability. Mysolar USA may appeal to buyers who prioritize cutting-edge high-wattage TOPCon bifacial modules and are comfortable working with a smaller, less widely audited supplier - but due diligence on supply continuity and local after-sales support should be a priority before committing to larger volumes.

Written by claude-sonnet from the figures above.


## Other comparisons

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- [AIKO vs Mysolar USA](https://comparepv.com/aiko-vs-mysolar-usa)
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- [ARTsolar vs Mysolar USA](https://comparepv.com/artsolar-vs-mysolar-usa)


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Source: https://comparepv.com/ja-solar-vs-mysolar-usa

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