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

# JA Solar vs Sonnex Energie

JA Solar has the broader catalog (504 vs 10 models). JA Solar leads on peak efficiency at 24.80%.


## The two companies


| Attribute | JA Solar | Sonnex Energie |
| --- | --- | --- |
| 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 | Sonnex Energie | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 10 | +494 |
| Max Power | 740 W | 440 W | +300 W |
| Avg Power | 456 W | 428 W | +29 W |


## Efficiency


| Measure | JA Solar | Sonnex Energie | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 22.50% | +2.30 pp |
| Avg Efficiency | 21.13% | 21.89% | +0.76 pp |


## Reliability & Warranty


| Measure | JA Solar | Sonnex Energie | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.315%/°C | +0.007 |
| Bifacial Share | 238 (47%) | 5 (50%) | +3 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 | Sonnex Energie |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 0 |
| 21-22% | 112 (22.2%) | 5 (50.0%) |
| 22-23% | 107 (21.2%) | 5 (50.0%) |
| 23%+ | 74 (14.7%) | 0 |


## Power distribution

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


| Power band | JA Solar | Sonnex Energie |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 0 |
| 400-499W | 173 (34.3%) | 10 (100.0%) |
| 500-599W | 120 (23.8%) | 0 |
| 600-699W | 60 (11.9%) | 0 |
| 700W+ | 9 (1.8%) | 0 |


## Cell technology

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

Dominant cell tech: **TOPCon** (100%)


| Technology | JA Solar | Sonnex Energie |
| --- | --- | --- |
| PERC | 247 (49.0%) | 0 |
| TOPCon | 146 (29.0%) | 10 (100.0%) |
| N-type | 90 (17.9%) | 0 |
| Unknown | 16 (3.2%) | 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, Sonnex Energie


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [SNX-D54HN\*\*\*-M-S (440W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-440w) | 440 | 22.5 | -0.310 | Monocrystalline |
| 2 | [SNX-D54HN\*\*\*-M-S (435W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-435w) | 435 | 22.3 | -0.310 | Monocrystalline |
| 3 | [SNX-D54HND-435M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-435m) | 435 | 22.3 | -0.320 | Monocrystalline |
| 4 | [SNX-D54HN\*\*\*-M-S (430W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-430w) | 430 | 22.0 | -0.310 | Monocrystalline |
| 5 | [SNX-D54HND-430M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-430m) | 430 | 22.0 | -0.320 | Monocrystalline |
| 6 | [SNX-D54HN\*\*\*-M-S (425W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-425w) | 425 | 21.8 | -0.310 | Monocrystalline |
| 7 | [SNX-D54HND-425M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-425m) | 425 | 21.8 | -0.320 | Monocrystalline |
| 8 | [SNX-D54HND-420M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-420m) | 420 | 21.5 | -0.320 | Monocrystalline |
| 9 | [SNX-D54HN\*\*\*-M-S (420W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-420w) | 420 | 21.5 | -0.310 | Monocrystalline |
| 10 | [SNX-D54HND-415M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-415m) | 415 | 21.2 | -0.320 | Monocrystalline |


## Summary

JA Solar was founded in 2005 in China and has grown into one of the world's largest solar panel manufacturers, employing over 37,000 people and operating with a production capacity exceeding 100 GW per year. The company holds Tier 1 bankable status confirmed by BloombergNEF, S&P Global Commodity Insights, and Wood Mackenzie, which ranked JA Solar jointly at the top of its global module manufacturer ranking for H1 2025. Its catalogue spans 524 panel models with maximum output reaching 740 Wp and peak efficiency of 24.4%, giving it broad coverage across residential, commercial, and utility segments. JA Solar maintains an active market presence across Europe, including Poland. Sonnex Energie is a Germany-based manufacturer with a considerably smaller footprint - its catalogue counts just 10 models and it does not carry Tier 1 bankable status - but it positions itself as a premium European brand focused on advanced cell technology and long-term performance guarantees.

JA Solar's portfolio is built primarily around PERC cell technology, which represents 52% of its models, with a growing share of TOPCon products. Average panel efficiency across the range stands at 20.9%, with bifacial designs accounting for 44% of the catalogue. This breadth makes JA Solar a strong candidate for utility-scale ground-mount projects and large commercial C&I installations where bankability, supply chain resilience, and certified financing eligibility are critical factors. Its extensive model range also serves residential rooftop installers who need consistent product availability at competitive price points. Sonnex Energie takes a more focused approach: its entire 10-model range is based on TOPCon technology, delivering a higher average efficiency of 21.9% and a slightly better temperature coefficient of -0.315%/°C compared to JA Solar's -0.32%/°C. With 50% of its portfolio bifacial and a 30-year product warranty, Sonnex targets high-performance residential rooftop and commercial C&I projects where premium cell technology and extended warranty terms carry more weight than brand scale or project finance eligibility.

For international buyers selecting between the two - particularly those working on projects requiring bank financing or long-term asset performance guarantees - JA Solar is the clear default, backed by over a decade of Tier 1 recognition, the highest production capacity in the industry, and top-tier rankings from multiple independent bodies. Sonnex Energie is a credible alternative for buyers who prioritize a European brand identity, a fully modern TOPCon portfolio, and longer warranty commitments, provided that Tier 1 bankability is not a hard requirement of the procurement process.

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)
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- [JA Solar vs AEET](https://comparepv.com/ja-solar-vs-aeet)
- [AIKO vs Sonnex Energie](https://comparepv.com/aiko-vs-sonnex-energie)
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- [ARTsolar vs Sonnex Energie](https://comparepv.com/artsolar-vs-sonnex-energie)


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Source: https://comparepv.com/ja-solar-vs-sonnex-energie

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