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

# Gokin vs JA Solar

JA Solar has the broader catalog (504 vs 44 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | Gokin | JA Solar |
| --- | --- | --- |
| Country |  | China |
| Headquarters |  | Beijing |
| Founded |  | 2005 |
| Employees |  | 37,289 |
| Annual capacity |  | 100+ GW/year |
| Tier 1 | no | yes |
| 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 | Gokin | JA Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 44 | 504 | +460 |
| Max Power | 780 W | 740 W | +40 W |
| Avg Power | 517 W | 456 W | +61 W |


## Efficiency


| Measure | Gokin | JA Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.50% | 24.80% | +0.30 pp |
| Avg Efficiency | 23.58% | 21.13% | +2.44 pp |


## Reliability & Warranty


| Measure | Gokin | JA Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.260%/°C | -0.322%/°C | +0.062 |
| Bifacial Share | 5 (11%) | 238 (47%) | +36 pp |
| Avg Warranty | 30.0 yrs | 27.9 yrs | +2.1 yr |


## Efficiency distribution

Gokin skews to higher efficiency: 82% of lineup is 23%+


| Efficiency band | Gokin | JA Solar |
| --- | --- | --- |
| 22-23% | 8 (18.2%) | 107 (21.2%) |
| 23%+ | 36 (81.8%) | 74 (14.7%) |
| \<20% | 0 | 112 (22.2%) |
| 20-21% | 0 | 99 (19.6%) |
| 21-22% | 0 | 112 (22.2%) |


## Power distribution

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


| Power band | Gokin | JA Solar |
| --- | --- | --- |
| 400-499W | 28 (63.6%) | 173 (34.3%) |
| 500-599W | 11 (25.0%) | 120 (23.8%) |
| 700W+ | 5 (11.4%) | 9 (1.8%) |
| \<400W | 0 | 142 (28.2%) |
| 600-699W | 0 | 60 (11.9%) |


## Cell technology

Dominant cell tech: **Back Contact** (100%)

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


| Technology | Gokin | JA Solar |
| --- | --- | --- |
| Back Contact | 44 (100.0%) | 0 |
| PERC | 0 | 247 (49.0%) |
| TOPCon | 0 | 146 (29.0%) |
| N-type | 0 | 90 (17.9%) |
| Unknown | 0 | 16 (3.2%) |
| HJT | 0 | 5 (1.0%) |


## Top panels, Gokin


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [GK-4-78HGBD-780M](https://comparepv.com/panel/gokin-gk-4-78hgbd-780m) | 780 | 24.3 | -0.260 | Monocrystalline |
| 2 | [GK-4-78HGBD-775M](https://comparepv.com/panel/gokin-gk-4-78hgbd-775m) | 775 | 24.1 | -0.260 | Monocrystalline |
| 3 | [GK-4-78HGBD-770M](https://comparepv.com/panel/gokin-gk-4-78hgbd-770m) | 770 | 24.0 | -0.260 | Monocrystalline |
| 4 | [GK-4-78HGBD-765M](https://comparepv.com/panel/gokin-gk-4-78hgbd-765m) | 765 | 23.8 | -0.260 | Monocrystalline |
| 5 | [GK-4-78HGBD-760M](https://comparepv.com/panel/gokin-gk-4-78hgbd-760m) | 760 | 23.7 | -0.260 | Monocrystalline |
| 6 | [GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 | 24.4 | -0.260 | Monocrystalline |
| 7 | [GK-5-60HG-535M](https://comparepv.com/panel/gokin-gk-5-60hg-535m) | 535 | 24.1 | -0.260 | Monocrystalline |
| 8 | [GK-5-60HG-530M](https://comparepv.com/panel/gokin-gk-5-60hg-530m) | 530 | 23.9 | -0.260 | Monocrystalline |
| 9 | [GK-5-60HG-525M](https://comparepv.com/panel/gokin-gk-5-60hg-525m) | 525 | 23.7 | -0.260 | Monocrystalline |
| 10 | [GK-5-60HG-520M](https://comparepv.com/panel/gokin-gk-5-60hg-520m) | 520 | 23.5 | -0.260 | Monocrystalline |


## 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 |


## Summary

Gokin and JA Solar represent two very different positions within the Chinese solar manufacturing landscape. JA Solar was founded in 2005, employs over 37,000 people, operates a production capacity exceeding 100 GW, and is publicly listed on the Shenzhen Stock Exchange. Critically, it holds Tier 1 bankable status, making it a standard choice for project developers who require lender acceptance. Gokin is a considerably younger company, established around 2019, with a module production capacity of 4 GW and no Tier 1 rating as of this writing. It has, however, built a focused identity around Back Contact (BC) cell technology, which accounts for nearly 80% of its 44-model portfolio. Gokin has shipped over 3 million BC modules and has been actively expanding in Europe, including a dedicated Spanish market entry in 2025. JA Solar's broader portfolio of 524 panels spans PERC and TOPCon technologies across a wide power range, reflecting decades of incremental product development and global distribution scale.

On the technology side, Gokin's BC-dominant lineup delivers a notably high average efficiency of 23.6% and a maximum of 24.5%, backed by an average temperature coefficient of -0.26%/°C - one of the most favorable figures available commercially. Maximum output reaches 780 Wp, making Gokin competitive for high-density rooftop and premium residential segments. Its average warranty stands at 30 years. JA Solar's portfolio averages 20.9% efficiency with a peak of 24.4%, and its temperature coefficient averages -0.32%/°C. Approximately 44% of JA Solar's lineup is bifacial, which suits utility-scale ground-mount and commercial C&I applications where rear-side albedo gain can meaningfully improve energy yield. JA Solar has earned PVEL Top Performer recognition for the tenth consecutive time in 2025, underscoring long-term reliability.

For international buyers choosing between the two, the decision largely hinges on project type and risk tolerance. JA Solar's Tier 1 status, global supply chain, and decade-long reliability track record make it the default choice for utility-scale and commercial projects involving project finance or long-term power purchase agreements. Gokin is a compelling option where bankability is less of a constraint and maximum power density, premium aesthetics, or best-in-class temperature performance are the primary drivers - particularly for residential premium and C&I rooftop installations in markets like Western and Central Europe where architectural integration is valued.

Written by claude-sonnet from the figures above.


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- [ARTsolar vs JA Solar](https://comparepv.com/artsolar-vs-ja-solar)


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

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