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

# JA Solar vs Twinsel Electronic Technology

JA Solar has the broader catalog (504 vs 17 models). JA Solar leads on peak efficiency at 24.80%. Twinsel Electronic Technology leans bifacial (71% of lineup).


## The two companies


| Attribute | JA Solar | Twinsel Electronic Technology |
| --- | --- | --- |
| 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 | Twinsel Electronic Technology | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 17 | +487 |
| Max Power | 740 W | 700 W | +40 W |
| Avg Power | 456 W | 646 W | +189 W |


## Efficiency


| Measure | JA Solar | Twinsel Electronic Technology | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 22.50% | +2.30 pp |
| Avg Efficiency | 21.13% | 21.86% | +0.72 pp |


## Reliability & Warranty


| Measure | JA Solar | Twinsel Electronic Technology | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.272%/°C | +0.050 |
| Bifacial Share | 238 (47%) | 12 (71%) | +23 pp |
| Avg Warranty | 27.9 yrs | 28.5 yrs | +0.7 yr |


## Efficiency distribution

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


| Efficiency band | JA Solar | Twinsel Electronic Technology |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 2 (11.8%) |
| 21-22% | 112 (22.2%) | 6 (35.3%) |
| 22-23% | 107 (21.2%) | 9 (52.9%) |
| 23%+ | 74 (14.7%) | 0 |


## Power distribution

Twinsel Electronic Technology offers more 600W+ panels (71% of lineup)


| Power band | JA Solar | Twinsel Electronic Technology |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 0 |
| 400-499W | 173 (34.3%) | 0 |
| 500-599W | 120 (23.8%) | 5 (29.4%) |
| 600-699W | 60 (11.9%) | 10 (58.8%) |
| 700W+ | 9 (1.8%) | 2 (11.8%) |


## Cell technology

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

Dominant cell tech: **HJT** (71%)


| Technology | JA Solar | Twinsel Electronic Technology |
| --- | --- | --- |
| PERC | 247 (49.0%) | 5 (29.4%) |
| TOPCon | 146 (29.0%) | 0 |
| N-type | 90 (17.9%) | 0 |
| Unknown | 16 (3.2%) | 0 |
| HJT | 5 (1.0%) | 12 (70.6%) |


## 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, Twinsel Electronic Technology


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [TSM132-8-675-700BHDG (700W variant)](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-675-700bhdg-700w-variant) | 700 | 22.5 | -0.240 | Monocrystalline |
| 2 | [TSM132-8-700BHDG](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-700bhdg) | 700 | 22.5 | -0.240 | Monocrystalline |
| 3 | [TSM132-8-675-700BHDG (695W variant)](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-675-700bhdg-695w-variant) | 695 | 22.4 | -0.240 | Monocrystalline |
| 4 | [TSM132-8-695BHDG](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-695bhdg) | 695 | 22.4 | -0.240 | Monocrystalline |
| 5 | [TSM132-8-675-700BHDG (690W variant)](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-675-700bhdg-690w-variant) | 690 | 22.2 | -0.240 | Monocrystalline |
| 6 | [TSM132-8-690BHDG](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-690bhdg) | 690 | 22.2 | -0.240 | Monocrystalline |
| 7 | [TSM132-8-675-700BHDG (685W variant)](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-675-700bhdg-685w-variant) | 685 | 22.2 | -0.240 | Monocrystalline |
| 8 | [TSM132-8-685BHDG](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-685bhdg) | 685 | 22.1 | -0.240 | Monocrystalline |
| 9 | [TSM132-8-675-700BHDG (680W variant)](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-675-700bhdg-680w-variant) | 680 | 22.1 | -0.240 | Monocrystalline |
| 10 | [TSM132-8-680BHDG](https://comparepv.com/panel/twinsel-electronic-technology-tsm132-8-680bhdg) | 680 | 21.9 | -0.240 | Monocrystalline |


## Summary

JA Solar, founded in 2005 and headquartered in China, is one of the world's top-four solar panel manufacturers by volume, with a workforce of over 37,000 employees and total production capacity exceeding 100 GW. The company holds Tier 1 bankable status - confirmed by independent financial agencies - and is listed on the Shenzhen Stock Exchange, giving it strong credibility with project lenders and institutional investors worldwide. Its portfolio spans 524 panel models, with a maximum rated power of 740 Wp and maximum module efficiency of 24.4%, underpinned by PERC technology (52.1% of the lineup) and a fast-growing TOPCon range anchored by the DeepBlue 4.0 Pro series. Twinsel Electronic Technology, established in 2011 in Ninghai County, Zhejiang Province, is a substantially smaller manufacturer with a focused catalog of 17 panel models. The company does not carry Tier 1 bankable status and has a more limited global footprint, though it maintains sales offices in European markets including the Netherlands and Germany and holds a broad set of international certifications including CE, TUV, and UL.

JA Solar's broad product range - from standard residential panels up to high-power 740 Wp modules - makes it equally suited to residential rooftop installs, commercial C&I projects, and large utility-scale ground-mount arrays. Independent validation is strong: JA Solar earned PVEL Top Performer status for the tenth consecutive year in 2025, offering installers and developers documented long-term reliability. Twinsel has built its niche around HJT cell technology, which accounts for 70.6% of its portfolio, combined with a high share of bifacial modules (also 70.6%). HJT contributes to a notably superior average temperature coefficient of -0.272%/°C compared to JA Solar's -0.323%/°C, meaning Twinsel modules lose less output on hot days. The company's average panel power of 645.6 Wp reflects a strategy focused on high-output, space-efficient modules best suited to commercial rooftops or bifacial ground-mount systems where rear-side irradiance can be captured. Average warranty terms are broadly comparable - 28.5 years for Twinsel versus 27.9 years for JA Solar.

For international buyers prioritizing financial security, supply chain depth, and bankability - such as independent power producers or large-scale installers requiring project finance - JA Solar is the default choice, with its Tier 1 status, massive capacity buffer, and decade of performance validation removing meaningful counterparty risk. Twinsel represents a potentially compelling option for technically sophisticated buyers specifically seeking HJT bifacial modules with superior thermal performance, provided they are comfortable working with a non-Tier 1 supplier and have independently verified long-term warranty and service support in their target market.

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


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

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