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

# JA Solar vs Sun Earth

JA Solar has the broader catalog (504 vs 60 models). JA Solar leads on peak efficiency at 24.80%. Sun Earth leans bifacial (63% of lineup).


## The two companies


| Attribute | JA Solar | Sun Earth |
| --- | --- | --- |
| Country | China |  |
| Headquarters | Beijing |  |
| Founded | 2005 |  |
| Employees | 37,289 |  |
| Annual capacity | 100+ GW/year |  |
| Tier 1 | yes | no |
| 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 | JA Solar | Sun Earth | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 60 | +444 |
| Max Power | 740 W | 610 W | +130 W |
| Avg Power | 456 W | 510 W | +54 W |


## Efficiency


| Measure | JA Solar | Sun Earth | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 23.80% | +1.00 pp |
| Avg Efficiency | 21.13% | 22.42% | +1.28 pp |


## Reliability & Warranty


| Measure | JA Solar | Sun Earth | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.294%/°C | +0.028 |
| Bifacial Share | 238 (47%) | 38 (63%) | +16 pp |
| Avg Warranty | 27.9 yrs | 30.9 yrs | +3.0 yr |


## Efficiency distribution

Sun Earth skews to higher efficiency: 37% of lineup is 23%+


| Efficiency band | JA Solar | Sun Earth |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 2 (3.3%) |
| 20-21% | 99 (19.6%) | 2 (3.3%) |
| 21-22% | 112 (22.2%) | 14 (23.3%) |
| 22-23% | 107 (21.2%) | 20 (33.3%) |
| 23%+ | 74 (14.7%) | 22 (36.7%) |


## Power distribution

JA Solar offers more 600W+ panels (14% of lineup)


| Power band | JA Solar | Sun Earth |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 2 (3.3%) |
| 400-499W | 173 (34.3%) | 24 (40.0%) |
| 500-599W | 120 (23.8%) | 30 (50.0%) |
| 600-699W | 60 (11.9%) | 4 (6.7%) |
| 700W+ | 9 (1.8%) | 0 |


## Cell technology

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

Dominant cell tech: **TOPCon** (82%)


| Technology | JA Solar | Sun Earth |
| --- | --- | --- |
| PERC | 247 (49.0%) | 4 (6.7%) |
| TOPCon | 146 (29.0%) | 49 (81.7%) |
| N-type | 90 (17.9%) | 0 |
| Unknown | 16 (3.2%) | 6 (10.0%) |
| HJT | 5 (1.0%) | 0 |
| BIPV | 0 | 1 (1.7%) |


## 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, Sun Earth


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [DXM8-72HBG 610W](https://comparepv.com/panel/sun-earth-dxm8-72hbg-610w) | 610 | 23.6 | -0.290 | Monocrystalline |
| 2 | [DXM8-72H-610](https://comparepv.com/panel/sun-earth-dxm8-72h-610) | 610 | 23.6 | -0.290 | Monocrystalline |
| 3 | [DXM8-72HBG 600W](https://comparepv.com/panel/sun-earth-dxm8-72hbg-600w) | 600 | 23.2 | -0.290 | Monocrystalline |
| 4 | [DXM8-72H-600](https://comparepv.com/panel/sun-earth-dxm8-72h-600) | 600 | 23.2 | -0.290 | Monocrystalline |
| 5 | [DXM8-72HBG 590W](https://comparepv.com/panel/sun-earth-dxm8-72hbg-590w) | 590 | 22.8 | -0.290 | Monocrystalline |
| 6 | [DXM8-72H-590](https://comparepv.com/panel/sun-earth-dxm8-72h-590) | 590 | 22.8 | -0.290 | Monocrystalline |
| 7 | [SKT580M10-144D4](https://comparepv.com/panel/sun-earth-skt580m10-144d4) | 580 | 22.4 | -0.290 | Monocrystalline |
| 8 | [DXM8-72HBG 580W](https://comparepv.com/panel/sun-earth-dxm8-72hbg-580w) | 580 | 22.5 | -0.290 | Monocrystalline |
| 9 | [DXM8-72H-580](https://comparepv.com/panel/sun-earth-dxm8-72h-580) | 580 | 22.5 | -0.290 | Monocrystalline |
| 10 | [SKT575M10-144D4](https://comparepv.com/panel/sun-earth-skt575m10-144d4) | 575 | 22.3 | -0.290 | Monocrystalline |


## Summary

JA Solar, founded in 2005 and headquartered in China, is one of the world's largest solar module manufacturers, with a production capacity exceeding 100 GW and a workforce of over 37,000 employees. Listed on the Shenzhen Stock Exchange and holding Tier 1 bankable status, the company has established a strong global presence across residential, commercial, and utility-scale markets. Sun Earth is a considerably smaller manufacturer without Tier 1 certification, offering a focused portfolio of 60 panels compared to JA Solar's 524 models. Sun Earth benefits from a long operational history in module production, but it operates at a much more limited scale and lacks the institutional recognition that comes with Tier 1 standing.

JA Solar's portfolio centers on PERC technology, which accounts for 52.1% of its panels, with a growing TOPCon segment. Its average module efficiency stands at 20.9% with a maximum of 24.4%, and the lineup extends to 740 Wp - making it highly versatile for residential rooftop installs, large utility-scale ground-mount projects, and commercial C&I applications where supply reliability and bankability are critical. Sun Earth has taken a more technology-forward approach, with 81.7% of its panels using TOPCon cells. This results in a meaningfully higher average efficiency of 22.4%, a better temperature coefficient of -0.294% per degree Celsius versus JA Solar's -0.323%, and a bifacial panel share of 63.3%. Combined with an average warranty of 31.1 years compared to JA Solar's 27.9 years, Sun Earth is a compelling option for ground-mounted bifacial systems and C&I projects where long-term energy yield and modern cell technology are the primary criteria.

For international buyers choosing between the two, JA Solar is the stronger option for projects requiring project finance, insurance, or high-volume procurement guarantees - its Tier 1 status and manufacturing scale make it the lower-risk default. Sun Earth suits buyers who prioritize higher average efficiency, a predominantly TOPCon portfolio, and extended warranty coverage, and for whom Tier 1 bankability is not a binding project requirement.

Written by claude-sonnet from the figures above.


## Other comparisons

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


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Source: https://comparepv.com/ja-solar-vs-sun-earth

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