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

# JA Solar vs Solitek

JA Solar has the broader catalog (504 vs 49 models). JA Solar leads on peak efficiency at 24.80%. Solitek leans bifacial (100% of lineup).


## The two companies


| Attribute | JA Solar | Solitek |
| --- | --- | --- |
| Country | China | Lithuania |
| Headquarters | Beijing | Vilnius |
| Founded | 2005 | 2009 |
| Employees | 37,289 | 100-500 |
| Annual capacity | 100+ GW/year | 0.1-0.5 GW/year |
| Tier 1 | yes |  |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.solitek.eu](https://www.solitek.eu) |

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...

SoliTek is a European solar panel and energy storage manufacturer headquartered in Vilnius, Lithuania, and is the largest solar module producer in Northern Europe. Part of the family-owned BOD Group, the company operates a fully automated production line with approximately 250 MW of annual module capacity and exports...


## Catalog & Power


| Measure | JA Solar | Solitek | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 49 | +455 |
| Max Power | 740 W | 720 W | +20 W |
| Avg Power | 456 W | 427 W | +30 W |


## Efficiency


| Measure | JA Solar | Solitek | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 23.18% | +1.62 pp |
| Avg Efficiency | 21.13% | 20.43% | +0.71 pp |


## Reliability & Warranty


| Measure | JA Solar | Solitek | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.301%/°C | +0.021 |
| Bifacial Share | 238 (47%) | 49 (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 | Solitek |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 15 (30.6%) |
| 20-21% | 99 (19.6%) | 0 |
| 21-22% | 112 (22.2%) | 4 (8.2%) |
| 22-23% | 107 (21.2%) | 28 (57.1%) |
| 23%+ | 74 (14.7%) | 2 (4.1%) |


## Power distribution

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


| Power band | JA Solar | Solitek |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 15 (30.6%) |
| 400-499W | 173 (34.3%) | 28 (57.1%) |
| 500-599W | 120 (23.8%) | 2 (4.1%) |
| 600-699W | 60 (11.9%) | 2 (4.1%) |
| 700W+ | 9 (1.8%) | 2 (4.1%) |


## Cell technology

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

Dominant cell tech: **TOPCon** (98%)


| Technology | JA Solar | Solitek |
| --- | --- | --- |
| PERC | 247 (49.0%) | 0 |
| TOPCon | 146 (29.0%) | 48 (98.0%) |
| N-type | 90 (17.9%) | 0 |
| Unknown | 16 (3.2%) | 1 (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, Solitek


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [Forza 720](https://comparepv.com/panel/ginlong-solis-forza-720) | 720 | 23.2 | -0.300 | Monocrystalline |
| 2 | [SOLID Framed White 720W](https://comparepv.com/panel/ginlong-solis-solid-framed-white-720w) | 720 | 23.2 | -0.300 | Monocrystalline |
| 3 | [Forza 650](https://comparepv.com/panel/ginlong-solis-forza-650) | 650 | 23.0 | -0.300 | Monocrystalline |
| 4 | [SOLID Framed White 650W](https://comparepv.com/panel/ginlong-solis-solid-framed-white-650w) | 650 | 23.0 | -0.300 | Monocrystalline |
| 5 | [Magnus 510](https://comparepv.com/panel/ginlong-solis-magnus-510) | 510 | 22.9 | -0.300 | Monocrystalline |
| 6 | [SOLID Framed Transparent 505](https://comparepv.com/panel/ginlong-solis-solid-framed-transparent-505) | 505 | 22.3 | -0.300 | Monocrystalline |
| 7 | [SOLRIF D Black 455](https://comparepv.com/panel/ginlong-solis-solrif-d-black-455) | 455 | 22.6 | -0.300 | Monocrystalline |
| 8 | [SOLID Semi-Clear Framed 455 W](https://comparepv.com/panel/ginlong-solis-solid-semi-clear-framed-455-w) | 455 | 22.8 | -0.300 | Monocrystalline |
| 9 | [SOLRIF N Black 455](https://comparepv.com/panel/ginlong-solis-solrif-n-black-455) | 455 | 22.6 | -0.300 | Monocrystalline |
| 10 | [SOLID Black Frameless 455](https://comparepv.com/panel/ginlong-solis-solid-black-frameless-455) | 455 | 22.6 | -0.300 | Monocrystalline |


## Summary

JA Solar, founded in China in 2005, is one of the world's largest solar module manufacturers, employing over 37,000 people and operating with a production capacity exceeding 100 GW. Listed on the Shenzhen Stock Exchange, it holds Tier 1 status from S&P Global Commodity Insights and has been recognized as 100% bankable by BloombergNEF, making it a default choice for project finance-backed installations globally. Solitek was founded in Lithuania in 2009 and employs between 100 and 500 people, with annual production capacity in the range of 0.1-0.5 GW - modest by global standards, but the company is recognized as the largest solar panel manufacturer in Northern Europe. While JA Solar competes across global markets spanning Asia, Europe, and the Americas, Solitek focuses primarily on the European market, positioning itself as a Made-in-Europe alternative at a time when supply chain diversification and local content requirements are increasingly valued by buyers.

Technologically, the two manufacturers take distinctly different approaches. JA Solar offers a broad portfolio of 524 modules, with PERC technology still leading at over 52% of its lineup alongside a growing share of TOPCon products; maximum panel power reaches 740 Wp, average module power is 441.7 Wp, and peak efficiency tops out at 24.4%. Approximately 44% of its portfolio is bifacial, with an average temperature coefficient of -0.3226%/°C. Solitek's portfolio is narrower at 49 modules, but nearly 98% use TOPCon technology and 100% are bifacial - representing a more homogeneous, forward-looking lineup. Solitek's maximum power reaches 720 Wp and it offers a slightly better average temperature coefficient of -0.301%/°C, which translates to marginally stronger output during hot weather. Solitek also provides a longer average product warranty of 30 years compared to JA Solar's 27.85 years, and holds a Cradle to Cradle Gold certification for sustainability - a differentiator in environmentally conscious procurement. JA Solar suits utility-scale ground-mount and large commercial C&I projects where bankability, supply security, and competitive pricing are paramount; Solitek fits residential rooftop and C&I projects in Europe where local origin or sustainability credentials are decision factors.

For international buyers, the choice hinges on project scale and geography. JA Solar offers unmatched production scale, a proven global track record, and the financial standing required for large-scale project finance - making it the lower-risk option for high-volume procurement. Solitek is a compelling choice for European residential or commercial projects where EU origin, environmental certification, or long warranty terms carry weight, accepting a trade-off in global availability for a stronger sustainability and provenance story.

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 Solitek](https://comparepv.com/ae-solar-vs-solitek)
- [JA Solar vs AEET](https://comparepv.com/ja-solar-vs-aeet)
- [AIKO vs Solitek](https://comparepv.com/aiko-vs-solitek)
- [JA Solar vs AKCOME](https://comparepv.com/ja-solar-vs-akcome)
- [ARTsolar vs Solitek](https://comparepv.com/artsolar-vs-solitek)


---

Source: https://comparepv.com/ja-solar-vs-solitek

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