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

# JA Solar vs PolyCrown Solar Tech

JA Solar has the broader catalog (504 vs 75 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | JA Solar | PolyCrown Solar Tech |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Beijing | Ningbo |
| Founded | 2005 | 2014 |
| Employees | 37,289 | 101-200 |
| Annual capacity | 100+ GW/year | 0.2 GW/year |
| Tier 1 | yes |  |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [http://www.polycrown-solar.com](http://www.polycrown-solar.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...

Polycrown Solar Tech Co., Ltd. is a high-tech enterprise founded in 2014, specializing in the research, development, production, and installation of solar products, including solar cells, solar panels, and solar projects. They have passed ISO9001, ISO14001, and OHSAS18001 system certifications, as well as TUV...


## Catalog & Power


| Measure | JA Solar | PolyCrown Solar Tech | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 75 | +429 |
| Max Power | 740 W | 730 W | +10 W |
| Avg Power | 456 W | 472 W | +16 W |


## Efficiency


| Measure | JA Solar | PolyCrown Solar Tech | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 23.69% | +1.11 pp |
| Avg Efficiency | 21.13% | 21.75% | +0.62 pp |


## Reliability & Warranty


| Measure | JA Solar | PolyCrown Solar Tech | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.294%/°C | +0.028 |
| Bifacial Share | 238 (47%) | 14 (19%) | +29 pp |
| Avg Warranty | 27.9 yrs | 25.9 yrs | +1.9 yr |


## Efficiency distribution

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


| Efficiency band | JA Solar | PolyCrown Solar Tech |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 2 (2.7%) |
| 20-21% | 99 (19.6%) | 16 (21.3%) |
| 21-22% | 112 (22.2%) | 24 (32.0%) |
| 22-23% | 107 (21.2%) | 24 (32.0%) |
| 23%+ | 74 (14.7%) | 9 (12.0%) |


## Power distribution

PolyCrown Solar Tech offers more 600W+ panels (25% of lineup)


| Power band | JA Solar | PolyCrown Solar Tech |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 21 (28.0%) |
| 400-499W | 173 (34.3%) | 24 (32.0%) |
| 500-599W | 120 (23.8%) | 11 (14.7%) |
| 600-699W | 60 (11.9%) | 15 (20.0%) |
| 700W+ | 9 (1.8%) | 4 (5.3%) |


## Cell technology

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

Dominant cell tech: **N-type** (47%)


| Technology | JA Solar | PolyCrown Solar Tech |
| --- | --- | --- |
| PERC | 247 (49.0%) | 0 |
| TOPCon | 146 (29.0%) | 7 (9.3%) |
| N-type | 90 (17.9%) | 35 (46.7%) |
| Unknown | 16 (3.2%) | 33 (44.0%) |
| 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 |


## Top panels, PolyCrown Solar Tech


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [NS-730MH-132](https://comparepv.com/panel/polycrown-solar-tech-ns-730mh-132) | 730 | 23.5 | -0.290 | Monocrystalline |
| 2 | [NS-720MH-132](https://comparepv.com/panel/polycrown-solar-tech-ns-720mh-132) | 720 | 23.2 | -0.290 | Monocrystalline |
| 3 | [NS-710MH-132](https://comparepv.com/panel/polycrown-solar-tech-ns-710mh-132) | 710 | 22.9 | -0.290 | Monocrystalline |
| 4 | [NS-700MH-132](https://comparepv.com/panel/polycrown-solar-tech-ns-700mh-132) | 700 | 22.5 | -0.290 | Monocrystalline |
| 5 | [NS-690MH-132](https://comparepv.com/panel/polycrown-solar-tech-ns-690mh-132) | 690 | 22.2 | -0.290 | Monocrystalline |
| 6 | [NS-670MH-132](https://comparepv.com/panel/polycrown-solar-tech-ns-670mh-132) | 670 | 21.6 | -0.290 | Monocrystalline |
| 7 | [NS-665MH-132](https://comparepv.com/panel/polycrown-solar-tech-ns-665mh-132) | 665 | 21.4 | -0.290 | Monocrystalline |
| 8 | [NS-660MH-120](https://comparepv.com/panel/polycrown-solar-tech-ns-660mh-120) | 660 | 23.3 | -0.290 | Monocrystalline |
| 9 | [NS-660MH-132](https://comparepv.com/panel/polycrown-solar-tech-ns-660mh-132) | 660 | 21.2 | -0.290 | Monocrystalline |
| 10 | [NS-655MH-132](https://comparepv.com/panel/polycrown-solar-tech-ns-655mh-132) | 655 | 21.1 | -0.290 | Monocrystalline |


## Summary

JA Solar and PolyCrown Solar Tech are both Chinese photovoltaic module manufacturers, but they occupy entirely different positions in the global solar industry. JA Solar was founded in 2005, is listed on the Shenzhen Stock Exchange, employs over 37,000 people, and operates with a production capacity exceeding 100 GW per year - placing it among the top-ranked module suppliers worldwide. The company holds Tier 1 bankable status as recognized by S&P Global Commodity Insights and jointly topped Wood Mackenzie's Global Solar Module Manufacturer Ranking for the first half of 2025. PolyCrown Solar Tech, founded in 2014 and headquartered in Ningbo, is a significantly smaller operation with 101-200 employees and an annual production capacity of just 0.2 GW. It holds ISO9001, ISO14001, and IEC/TUV certifications but does not appear on any Tier 1 bankability lists. With a portfolio of 75 models compared to JA Solar's 524, PolyCrown serves a narrower segment of the market.

JA Solar's portfolio is dominated by PERC technology (52.1% of models), with a growing share of bifacial panels (44.3%) and newer TOPCon-based products reaching up to 740 Wp and 24.4% peak efficiency. The average panel efficiency across the portfolio is 20.87%, with an average temperature coefficient of -0.3226%/°C. JA Solar is well suited to residential rooftop installs, utility-scale ground-mount projects, and commercial C&I applications where bankability and long-term service infrastructure matter. PolyCrown's portfolio, while smaller, skews toward N-type cell technology (46.7% of models), resulting in a higher average efficiency of 21.75% and a better average temperature coefficient of -0.294%/°C. Its maximum rated output reaches 730 Wp with a peak efficiency of 23.69%. PolyCrown may appeal to cost-sensitive buyers pursuing smaller residential or light commercial installations where project financing requirements are minimal.

For international buyers, the choice hinges primarily on project scale and risk tolerance. JA Solar is the appropriate choice for any project requiring bankable, insurable modules with a globally recognized warranty backed by a financially stable manufacturer - this applies to most utility-scale, C&I, and financed residential projects. PolyCrown's newer N-type-focused portfolio offers competitive average efficiency figures, but the company's limited scale, absence from Tier 1 lists, and smaller workforce introduce meaningful long-term warranty and supply continuity risk that buyers should carefully weigh before committing.

Written by claude-sonnet from the figures above.


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Source: https://comparepv.com/ja-solar-vs-polycrown-solar-tech

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