---
title: "JA Solar vs Sunpro Power - Brand Comparison | ComparePV"
description: "Compare JA Solar vs Sunpro Power solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/ja-solar-vs-sunpro-power"
image: "https://comparepv.com/og/compare/manufacturers/ja-solar/sunpro-power.png"
---

# JA Solar vs Sunpro Power

JA Solar has the broader catalog (504 vs 79 models). JA Solar leads on peak efficiency at 24.80%. Sunpro Power leans bifacial (91% of lineup).


## The two companies


| Attribute | JA Solar | Sunpro Power |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Beijing | Yuhuan, Zhejiang province |
| Founded | 2005 | 2018 |
| Employees | 37,289 | 51-200 |
| Annual capacity | 100+ GW/year | 2-3 GW/year |
| Tier 1 | yes | yes |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [http://www.sunpropower.com](http://www.sunpropower.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...

SUNPRO POWER, established in 2018, is a high-tech enterprise focused on photovoltaic R&D and manufacturing. They are mainly engaged in the production and sales of PV cells and modules, and invest in solar projects. The company provides OEM/ODM services to global customers and has been recognized as a Bloomberg Tier 1...


## Catalog & Power


| Measure | JA Solar | Sunpro Power | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 79 | +425 |
| Max Power | 740 W | 725 W | +15 W |
| Avg Power | 456 W | 558 W | +101 W |


## Efficiency


| Measure | JA Solar | Sunpro Power | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 24.62% | +0.18 pp |
| Avg Efficiency | 21.13% | 22.88% | +1.74 pp |


## Reliability & Warranty


| Measure | JA Solar | Sunpro Power | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.283%/°C | +0.039 |
| Bifacial Share | 238 (47%) | 72 (91%) | +44 pp |
| Avg Warranty | 27.9 yrs | 30.0 yrs | +2.1 yr |


## Efficiency distribution

Sunpro Power skews to higher efficiency: 39% of lineup is 23%+


| Efficiency band | JA Solar | Sunpro Power |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 0 |
| 21-22% | 112 (22.2%) | 2 (2.5%) |
| 22-23% | 107 (21.2%) | 46 (58.2%) |
| 23%+ | 74 (14.7%) | 31 (39.2%) |


## Power distribution

Sunpro Power offers more 600W+ panels (39% of lineup)


| Power band | JA Solar | Sunpro Power |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 0 |
| 400-499W | 173 (34.3%) | 31 (39.2%) |
| 500-599W | 120 (23.8%) | 17 (21.5%) |
| 600-699W | 60 (11.9%) | 23 (29.1%) |
| 700W+ | 9 (1.8%) | 8 (10.1%) |


## Cell technology

Dominant cell tech: PERC (49%)

Dominant cell tech: TOPCon (67%)


| Technology | JA Solar | Sunpro Power |
| --- | --- | --- |
| PERC | 247 (49.0%) | 0 |
| TOPCon | 146 (29.0%) | 53 (67.1%) |
| N-type | 90 (17.9%) | 0 |
| Unknown | 16 (3.2%) | 0 |
| HJT | 5 (1.0%) | 16 (20.3%) |
| Back Contact | 0 | 10 (12.7%) |


## 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, Sunpro Power


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [SP-210-132DS725](https://comparepv.com/panel/sunpro-sp-210-132ds725) | 725 | 23.3 | -0.240 | Monocrystalline |
| 2 | [SPDG725-N132M12](https://comparepv.com/panel/sunpro-spdg725-n132m12) | 725 | 23.3 | -0.300 | Monocrystalline |
| 3 | [SPDG720-N132M12](https://comparepv.com/panel/sunpro-spdg720-n132m12) | 720 | 23.2 | -0.300 | Monocrystalline |
| 4 | [SP-210-132DS720](https://comparepv.com/panel/sunpro-sp-210-132ds720) | 720 | 23.2 | -0.240 | Monocrystalline |
| 5 | [SPDG715-N132M12](https://comparepv.com/panel/sunpro-spdg715-n132m12) | 715 | 23.0 | -0.300 | Monocrystalline |
| 6 | [SP-210-132DS715](https://comparepv.com/panel/sunpro-sp-210-132ds715) | 715 | 23.0 | -0.240 | Monocrystalline |
| 7 | [SPDG710N132M12](https://comparepv.com/panel/sunpro-spdg710n132m12) | 710 | 22.9 | -0.300 | Monocrystalline |
| 8 | [SP-210-132DS710](https://comparepv.com/panel/sunpro-sp-210-132ds710) | 710 | 22.9 | -0.240 | Monocrystalline |
| 9 | [SPDG665-BC132R12](https://comparepv.com/panel/sunpro-spdg665-bc132r12) | 665 | 24.6 | -0.260 | Monocrystalline |
| 10 | [SPDG660-BC132R12](https://comparepv.com/panel/sunpro-spdg660-bc132r12) | 660 | 24.4 | -0.260 | Monocrystalline |


## Summary

JA Solar, founded in 2005 and listed on the Shenzhen Stock Exchange, is one of the world's largest solar module manufacturers, with over 37,000 employees and a production capacity exceeding 100 GW. The company ranked jointly first in Wood Mackenzie's Global Solar Module Manufacturer Ranking for the first half of 2025 and has achieved Top Performer status in PVEL reliability testing for ten consecutive years, reflecting both its manufacturing scale and long-established Tier 1 bankability. Sunpro Power, founded in 2018, operates at a far smaller scale with 51 to 200 employees and a production capacity of 2-3 GW. Despite this, the company has maintained Bloomberg BNEF Tier 1 status since Q2 2022 and has expanded its geographic footprint with manufacturing bases in Poland and Indonesia, strengthening supply chain resilience for European and Asian markets.

JA Solar's portfolio of over 524 panel models is anchored by PERC technology, which accounts for approximately 52% of its lineup, with a maximum output of 740 Wp and an average of 441.68 Wp. Average module efficiency stands at 20.87% and 44% of the portfolio is bifacial, making JA Solar a versatile choice for residential rooftop installs, utility-scale ground-mount projects, and commercial C&I applications where product availability and supply continuity are critical procurement factors. Sunpro Power takes a more concentrated approach: all 79 models in its portfolio are bifacial, with TOPCon technology representing approximately 67% of the lineup and an average module power of 557.53 Wp - reflecting a clear focus on the high-power segment. Its average efficiency of 22.88% and maximum of 24.62% place it above JA Solar on a per-panel performance basis, and its average temperature coefficient of Pmax at -0.283%/°C compares favorably to JA Solar's -0.323%/°C, an advantage in hot-climate or summer-peak generation scenarios. Sunpro's average product warranty of 30 years also exceeds JA Solar's average of 27.85 years.

For international buyers prioritizing supply security, broad product selection, and a globally recognized brand with two decades of operational history, JA Solar is the lower-risk option across all project types and scales. Sunpro Power is the stronger candidate for buyers seeking a fully bifacial, TOPCon-forward portfolio with superior average efficiency and a longer warranty - particularly for utility-scale ground-mount and premium C&I projects where per-watt performance drives procurement decisions. Its European manufacturing presence in Poland may offer additional logistical and regulatory advantages for buyers sourcing within the EU.

Written by claude-sonnet from the figures above.


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Source: https://comparepv.com/ja-solar-vs-sunpro-power

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