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

# JA Solar vs Ocean Solar

JA Solar has the broader catalog (504 vs 36 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | JA Solar | Ocean Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Beijing | Changzhou City, Jiangsu Province |
| Founded | 2005 | 2012 |
| Employees | 37,289 | 200+ |
| Annual capacity | 100+ GW/year | 1 GW/year |
| Tier 1 | yes |  |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [http://www.oceansolar.cn](http://www.oceansolar.cn) |

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...

Ocean Solar is a high-tech enterprise specializing in the production of high-efficiency monocrystalline and polycrystalline solar modules. They serve domestic and overseas installers, distributors, and factories engaged in off-grid and on-grid solar energy systems. The company is committed to providing customers with...


## Catalog & Power


| Measure | JA Solar | Ocean Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 36 | +468 |
| Max Power | 740 W | 750 W | +10 W |
| Avg Power | 456 W | 596 W | +140 W |


## Efficiency


| Measure | JA Solar | Ocean Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 24.20% | +0.60 pp |
| Avg Efficiency | 21.13% | 23.06% | +1.92 pp |


## Reliability & Warranty


| Measure | JA Solar | Ocean Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.300%/°C | +0.022 |
| Bifacial Share | 238 (47%) | 0 (0%) | +47 pp |
| Avg Warranty | 27.9 yrs | 30.0 yrs | +2.1 yr |


## Efficiency distribution

Ocean Solar skews to higher efficiency: 58% of lineup is 23%+


| Efficiency band | JA Solar | Ocean Solar |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 0 |
| 21-22% | 112 (22.2%) | 2 (5.6%) |
| 22-23% | 107 (21.2%) | 13 (36.1%) |
| 23%+ | 74 (14.7%) | 21 (58.3%) |


## Power distribution

Ocean Solar offers more 600W+ panels (58% of lineup)


| Power band | JA Solar | Ocean Solar |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 0 |
| 400-499W | 173 (34.3%) | 7 (19.4%) |
| 500-599W | 120 (23.8%) | 8 (22.2%) |
| 600-699W | 60 (11.9%) | 15 (41.7%) |
| 700W+ | 9 (1.8%) | 6 (16.7%) |


## Cell technology

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

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


| Technology | JA Solar | Ocean Solar |
| --- | --- | --- |
| PERC | 247 (49.0%) | 0 |
| TOPCon | 146 (29.0%) | 36 (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, Ocean Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [AOX-132G12HC750W](https://comparepv.com/panel/ocean-solar-aox-132g12hc750w) | 750 | 24.2 | -0.300 | Monocrystalline |
| 2 | [AOX-132G12HC740W](https://comparepv.com/panel/ocean-solar-aox-132g12hc740w) | 740 | 23.8 | -0.300 | Monocrystalline |
| 3 | [AOX-132G12HC730W](https://comparepv.com/panel/ocean-solar-aox-132g12hc730w) | 730 | 23.5 | -0.300 | Monocrystalline |
| 4 | [AOX-132G12HC720W](https://comparepv.com/panel/ocean-solar-aox-132g12hc720w) | 720 | 23.2 | -0.300 | Monocrystalline |
| 5 | [AOX-132G12HC710W](https://comparepv.com/panel/ocean-solar-aox-132g12hc710w) | 710 | 22.9 | -0.300 | Monocrystalline |
| 6 | [AOX-132G12HC700W](https://comparepv.com/panel/ocean-solar-aox-132g12hc700w) | 700 | 22.5 | -0.300 | Monocrystalline |
| 7 | [AOX-132G12RHC650W](https://comparepv.com/panel/ocean-solar-aox-132g12rhc650w) | 650 | 24.1 | -0.300 | Monocrystalline |
| 8 | [AOX-132G12RHC645W](https://comparepv.com/panel/ocean-solar-aox-132g12rhc645w) | 645 | 23.9 | -0.300 | Monocrystalline |
| 9 | [AOX-132G12RHC640W](https://comparepv.com/panel/ocean-solar-aox-132g12rhc640w) | 640 | 23.7 | -0.300 | Monocrystalline |
| 10 | [AOX-132G12RHC635W](https://comparepv.com/panel/ocean-solar-aox-132g12rhc635w) | 635 | 23.5 | -0.300 | Monocrystalline |


## Summary

JA Solar, founded in 2005 and headquartered in China, ranks among the world's largest solar module manufacturers, with annual production capacity exceeding 100 GW and a workforce of over 37,000 employees. Listed on the Shenzhen Stock Exchange, the company holds Tier 1 bankable status recognized by both S&P Global Commodity Insights and BloombergNEF, and jointly topped Wood Mackenzie's global module manufacturer ranking for the first half of 2025 - underscoring its position as one of the two leading suppliers globally. Ocean Solar, established in 2012 and also China-based, operates at a fundamentally different scale: roughly 200 employees, 1 GW of annual production capacity, and no Tier 1 designation. The company positions itself as a specialist manufacturer of high-efficiency modules, with exports reportedly exceeding 1 GW cumulative across markets including Australia, Germany, Spain, and Ukraine.

JA Solar's portfolio of 524 panels spans PERC (52% of offerings) and TOPCon technologies, with an average panel efficiency of 20.9% and a maximum of 24.4%. Approximately 44% of the portfolio is bifacial, making JA Solar a natural fit for utility-scale ground-mount projects where rear-side albedo gains are achievable, as well as large commercial C&I installations where supply reliability and project finance acceptance are critical. Ocean Solar has taken a more concentrated approach, building its entire 36-panel catalogue exclusively around TOPCon technology, which delivers a meaningfully higher average efficiency of 23.1% and an average rated power of 596 Wp. Its superior average temperature coefficient of Pmax (-0.30%/°C versus -0.32%/°C for JA Solar) and a uniform 30-year product warranty - compared to JA Solar's portfolio average of 27.9 years - strengthen its case for residential rooftop and small commercial installations where roof area is constrained and long-term performance guarantees matter.

For buyers involved in project-financed utility-scale or large C&I developments, JA Solar is the clear choice given its Tier 1 bankability, global supply chain depth, and broad bifacial product range. Ocean Solar presents a compelling proposition for residential and small commercial procurement where cutting-edge TOPCon efficiency and a strong warranty take priority - though its limited production scale and absence from Tier 1 lists will constrain its appeal wherever lender or investor approval of the module supplier is a requirement.

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


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

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