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

# JA Solar vs Weran Solar

JA Solar has the broader catalog (504 vs 17 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | JA Solar | Weran Solar |
| --- | --- | --- |
| 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 | Weran Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 17 | +487 |
| Max Power | 740 W | 665 W | +75 W |
| Avg Power | 456 W | 571 W | +115 W |


## Efficiency


| Measure | JA Solar | Weran Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 24.60% | +0.20 pp |
| Avg Efficiency | 21.13% | 22.94% | +1.81 pp |


## Reliability & Warranty


| Measure | JA Solar | Weran Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.276%/°C | +0.046 |
| Bifacial Share | 238 (47%) | 6 (35%) | +12 pp |
| Avg Warranty | 27.9 yrs | 26.8 yrs | +1.1 yr |


## Efficiency distribution

Weran Solar skews to higher efficiency: 41% of lineup is 23%+


| Efficiency band | JA Solar | Weran Solar |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 0 |
| 21-22% | 112 (22.2%) | 2 (11.8%) |
| 22-23% | 107 (21.2%) | 8 (47.1%) |
| 23%+ | 74 (14.7%) | 7 (41.2%) |


## Power distribution

Weran Solar offers more 600W+ panels (65% of lineup)


| Power band | JA Solar | Weran Solar |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 0 |
| 400-499W | 173 (34.3%) | 5 (29.4%) |
| 500-599W | 120 (23.8%) | 1 (5.9%) |
| 600-699W | 60 (11.9%) | 11 (64.7%) |
| 700W+ | 9 (1.8%) | 0 |


## Cell technology

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


| Technology | JA Solar | Weran Solar |
| --- | --- | --- |
| PERC | 247 (49.0%) | 0 |
| TOPCon | 146 (29.0%) | 0 |
| N-type | 90 (17.9%) | 0 |
| Unknown | 16 (3.2%) | 17 (100.0%) |
| 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, Weran Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [WR7-72HVD-665M](https://comparepv.com/panel/weran-solar-wr7-72hvd-665m) | 665 | 24.6 | -0.260 | Monocrystalline |
| 2 | [WR7-72HVD-660M](https://comparepv.com/panel/weran-solar-wr7-72hvd-660m) | 660 | 24.4 | -0.260 | Monocrystalline |
| 3 | [WR7-72HVD-655M](https://comparepv.com/panel/weran-solar-wr7-72hvd-655m) | 655 | 24.2 | -0.260 | Monocrystalline |
| 4 | [WR7-72HVD-650M](https://comparepv.com/panel/weran-solar-wr7-72hvd-650m) | 650 | 24.1 | -0.260 | Monocrystalline |
| 5 | [WR7-72HVD-645M](https://comparepv.com/panel/weran-solar-wr7-72hvd-645m) | 645 | 23.9 | -0.260 | Monocrystalline |
| 6 | [WR7-72HVD-640M](https://comparepv.com/panel/weran-solar-wr7-72hvd-640m) | 640 | 23.7 | -0.260 | Monocrystalline |
| 7 | [LR7-72HTH 620M](https://comparepv.com/panel/weran-solar-lr7-72hth-620m) | 620 | 23.0 | -0.280 | Monocrystalline |
| 8 | [LR7-72HTH 615M](https://comparepv.com/panel/weran-solar-lr7-72hth-615m) | 615 | 22.8 | -0.280 | Monocrystalline |
| 9 | [LR7-72HTH 610M](https://comparepv.com/panel/weran-solar-lr7-72hth-610m) | 610 | 22.6 | -0.280 | Monocrystalline |
| 10 | [LR7-72HTH 605M](https://comparepv.com/panel/weran-solar-lr7-72hth-605m) | 605 | 22.4 | -0.280 | Monocrystalline |


## Summary

JA Solar and Weran Solar represent fundamentally different tiers of the global solar manufacturing landscape. JA Solar was founded in 2005 in China and is publicly listed on the Shenzhen Stock Exchange. With over 37,000 employees and a production capacity exceeding 100 GW, it ranks among the world's largest module manufacturers - jointly topping Wood Mackenzie's global module manufacturer ranking for H1 2025 alongside Trinasolar. The company holds Tier 1 bankable status as confirmed by both S&P Global Commodity Insights and PV Tech, with cumulative global shipments approaching 300 GW across 178 countries. Weran Solar, by contrast, is a much smaller and newer company founded around 2015 and headquartered in Shanghai, operating as an official LONGi distributor. It does not hold Tier 1 status and has a limited public track record, though it claims 600+ customers worldwide and carries international certifications including CE, IEC, UL, and ISO.

JA Solar's portfolio spans 524 panel models with a maximum output of 740 Wp and a maximum efficiency of 24.4%, with PERC technology accounting for over 52% of its lineup and bifacial products making up 44.3% of the range - well suited to utility-scale ground-mount installations with single-axis trackers, as well as large commercial C&I rooftop projects. Its average product warranty of nearly 28 years and consistent PVEL Top Performer recognition - for the tenth consecutive time in 2025 - underline long-term reliability. Weran Solar's portfolio of 17 models is narrower but skewed toward high-performance products, with an average efficiency of 22.9% and average output of 571 Wp. Its HPBC 2.0 modules reach a peak efficiency of 24.6%, and the portfolio's average temperature coefficient of -0.276%/°C is meaningfully better than JA Solar's -0.328%/°C, making Weran modules attractive for rooftop installations in warmer climates or space-constrained sites.

For international buyers, JA Solar is the lower-risk choice across virtually all project types - residential rooftop, commercial, and utility-scale - due to its bankability, global supply chain depth, and documented performance history. Weran Solar may appeal to buyers prioritizing high module efficiency and competitive pricing in a tightly scoped residential or small commercial context, but the absence of Tier 1 status creates financing hurdles for larger projects and adds counterparty risk that procurement teams and lenders will need to evaluate carefully before committing.

Written by claude-sonnet from the figures above.


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

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