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

# JA Solar vs Trina Solar

JA Solar has the broader catalog (504 vs 340 models).


## The two companies


| Attribute | JA Solar | Trina Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Beijing | Changzhou |
| Founded | 2005 | 1997 |
| Employees | 37,289 |  |
| Annual capacity | 100+ GW/year |  |
| Tier 1 | yes | yes |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.trinasolar.com](https://www.trinasolar.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 | Trina Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 340 | +164 |
| Max Power | 740 W | 760 W | +20 W |
| Avg Power | 456 W | 520 W | +64 W |


## Efficiency


| Measure | JA Solar | Trina Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 24.80% |  |
| Avg Efficiency | 21.13% | 21.71% | +0.58 pp |


## Reliability & Warranty


| Measure | JA Solar | Trina Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.302%/°C | +0.020 |
| Bifacial Share | 238 (47%) | 145 (43%) | +5 pp |
| Avg Warranty | 27.9 yrs | 28.2 yrs | +0.3 yr |


## Efficiency distribution

Trina Solar skews to higher efficiency: 22% of lineup is 23%+


| Efficiency band | JA Solar | Trina Solar |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 22 (6.5%) |
| 20-21% | 99 (19.6%) | 57 (16.8%) |
| 21-22% | 112 (22.2%) | 83 (24.4%) |
| 22-23% | 107 (21.2%) | 102 (30.0%) |
| 23%+ | 74 (14.7%) | 76 (22.4%) |


## Power distribution

Trina Solar offers more 600W+ panels (34% of lineup)


| Power band | JA Solar | Trina Solar |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 28 (8.2%) |
| 400-499W | 173 (34.3%) | 142 (41.8%) |
| 500-599W | 120 (23.8%) | 54 (15.9%) |
| 600-699W | 60 (11.9%) | 72 (21.2%) |
| 700W+ | 9 (1.8%) | 44 (12.9%) |


## Cell technology

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

Dominant cell tech: **TOPCon** (73%)


| Technology | JA Solar | Trina Solar |
| --- | --- | --- |
| PERC | 247 (49.0%) | 75 (22.1%) |
| TOPCon | 146 (29.0%) | 248 (72.9%) |
| N-type | 90 (17.9%) | 6 (1.8%) |
| Unknown | 16 (3.2%) | 11 (3.2%) |
| 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, Trina Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [TSM-NEG21C.20Q-760](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-760) | 760 | 24.5 | -0.260 | Monocrystalline |
| 2 | [TSM-NEG21C.20Q-755](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-755) | 755 | 24.3 | -0.260 | Monocrystalline |
| 3 | [TSM-NEG21C.20Q-750](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-750) | 750 | 24.1 | -0.260 | Monocrystalline |
| 4 | [TSM-NEG21C.20Q-745](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-745) | 745 | 24.0 | -0.260 | Monocrystalline |
| 5 | [TSM-NEG21C.20-740](https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg21c-20-740) | 740 | 23.8 | -0.290 | Monocrystalline |
| 6 | [TSM-NEG21C.20 740](https://comparepv.com/panel/trina-solar-tsm-neg21c-20-740) | 740 | 23.8 | -0.290 | Monocrystalline |
| 7 | [TSM-NEG21C.20Q-740](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-740) | 740 | 23.8 | -0.260 | Monocrystalline |
| 8 | [TSM-NEG21C.20-735](https://comparepv.com/panel/trina-solar-co-ltd-tsm-neg21c-20-735) | 735 | 23.7 | -0.290 | Monocrystalline |
| 9 | [TSM-NEG21C.20 735](https://comparepv.com/panel/trina-solar-tsm-neg21c-20-735) | 735 | 23.7 | -0.290 | Monocrystalline |
| 10 | [TSM-NEG21C.20Q-735](https://comparepv.com/panel/trina-solar-tsm-neg21c-20q-735) | 735 | 23.7 | -0.260 | Monocrystalline |


## Summary

JA Solar, founded in 2005 and headquartered in China, has grown into one of the world's largest solar module manufacturers with over 100 GW of annual production capacity and more than 37,000 employees. Trina Solar, established earlier in 1997 and also based in China, brings a longer track record spanning nearly three decades in the photovoltaic industry. Both manufacturers hold Tier 1 bankable status and tied for first place in Wood Mackenzie's H1 2025 global solar module manufacturer ranking - JA Solar scoring 91.7 points and Trina Solar 91.6 - in an assessment of 38 crystalline-silicon producers evaluated across 10 core performance dimensions. Both companies are active in major international markets and maintain broad geographic distribution networks.

On the technology side, the two manufacturers diverge meaningfully. JA Solar's catalog of 524 panels still leans on PERC cell technology as its dominant offering (over 52% of the lineup), while also expanding its TOPCon DeepBlue 4.0 Pro and 5.0 series for higher-performance segments. Trina Solar has made a more decisive pivot to TOPCon, with nearly 70% of its 305-model portfolio built on N-type architecture - a strategy reflected in its higher average module power (506 Wp vs. 442 Wp), higher average efficiency (21.51% vs. 20.87%), and a more favorable average temperature coefficient (-0.304%/°C vs. -0.323%/°C). These advantages make Trina Solar a strong fit for utility-scale ground-mount projects and commercial C&I installations where peak energy yield and thermal stability are priorities. JA Solar's broader catalog and maximum panel efficiency of 24.4% - slightly above Trina's 24.1% - give it versatility across residential rooftop installs where panel size variety and price competitiveness matter. Both brands back their products with long performance warranties averaging close to 28 years.

For international buyers choosing between the two, Trina Solar's stronger TOPCon penetration and superior average performance metrics make it the preferred option for performance-critical utility and large commercial projects. JA Solar's massive production scale, wider product range, and competitive PERC-to-TOPCon mix give it an edge in residential and mixed-portfolio procurement where installers need flexibility across price points. Either brand represents a low-risk, bankable choice for lenders and project developers worldwide.

Written by claude-sonnet from the figures above.


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

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