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

# JA Solar vs Runda Solar

JA Solar has the broader catalog (504 vs 6 models). JA Solar leads on peak efficiency at 24.80%. Runda Solar leans bifacial (100% of lineup).


## The two companies


| Attribute | JA Solar | Runda Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Beijing | Yancheng, Jiangsu Province |
| Founded | 2005 | 2009 |
| Employees | 37,289 | 800+ |
| Annual capacity | 100+ GW/year | 4GW (modules), 8GW (cells), 1GWh (energy storage) GW/year |
| Tier 1 | yes |  |
| Listed | SZSE: 002459 | NEEQ (National Equities Exchange and Quotations): 832391 |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | http://www.rundaenergy.com/ (redirects to https://www.rundapv.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...

Runda Solar (Jiangsu Runda PV Co., Ltd.) is a high-tech company dedicated to manufacturing world-class solar photovoltaic modules. The company's business covers the entire photovoltaic industry chain, including R&D, production, and sales of PV modules, as well as energy storage and smart grid solutions. Runda Solar...


## Catalog & Power


| Measure | JA Solar | Runda Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 6 | +498 |
| Max Power | 740 W | 730 W | +10 W |
| Avg Power | 456 W | 718 W | +261 W |


## Efficiency


| Measure | JA Solar | Runda Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 23.50% | +1.30 pp |
| Avg Efficiency | 21.13% | 23.10% | +1.97 pp |


## Reliability & Warranty


| Measure | JA Solar | Runda Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.310%/°C | +0.012 |
| Bifacial Share | 238 (47%) | 6 (100%) | +53 pp |
| Avg Warranty | 27.9 yrs | 30.0 yrs | +2.1 yr |


## Efficiency distribution

Runda Solar skews to higher efficiency: 67% of lineup is 23%+


| Efficiency band | JA Solar | Runda Solar |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 0 |
| 21-22% | 112 (22.2%) | 0 |
| 22-23% | 107 (21.2%) | 2 (33.3%) |
| 23%+ | 74 (14.7%) | 4 (66.7%) |


## Power distribution

Runda Solar offers more 600W+ panels (100% of lineup)


| Power band | JA Solar | Runda Solar |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 0 |
| 400-499W | 173 (34.3%) | 0 |
| 500-599W | 120 (23.8%) | 0 |
| 600-699W | 60 (11.9%) | 0 |
| 700W+ | 9 (1.8%) | 6 (100.0%) |


## Cell technology

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

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


| Technology | JA Solar | Runda Solar |
| --- | --- | --- |
| PERC | 247 (49.0%) | 0 |
| TOPCon | 146 (29.0%) | 6 (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, Runda Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [RS730S9-132GANT](https://comparepv.com/panel/runda-solar-rs730s9-132gant) | 730 | 23.5 | -0.310 | Monocrystalline |
| 2 | [RS725S9-132GANT](https://comparepv.com/panel/runda-solar-rs725s9-132gant) | 725 | 23.3 | -0.310 | Monocrystalline |
| 3 | [RS720S9-132GANT](https://comparepv.com/panel/runda-solar-rs720s9-132gant) | 720 | 23.2 | -0.310 | Monocrystalline |
| 4 | [RS715S9-132GANT](https://comparepv.com/panel/runda-solar-rs715s9-132gant) | 715 | 23.0 | -0.310 | Monocrystalline |
| 5 | [RS710S9-132GANT](https://comparepv.com/panel/runda-solar-rs710s9-132gant) | 710 | 22.9 | -0.310 | Monocrystalline |
| 6 | [RS705S9-132GANT](https://comparepv.com/panel/runda-solar-rs705s9-132gant) | 705 | 22.7 | -0.310 | Monocrystalline |


## Summary

JA Solar, founded in 2005 and listed on the Shenzhen Stock Exchange, is one of the largest solar panel manufacturers in the world, with over 37,000 employees and a production capacity exceeding 100 GW. The company holds Tier 1 bankable status from both S&P Global Commodity Insights and BloombergNEF, and according to Wood Mackenzie's global module manufacturer ranking jointly claimed the top position for H1 2025. Runda Solar (Jiangsu Runda PV Co., Ltd.), founded in 2009 and listed on China's NEEQ exchange, is a considerably smaller manufacturer with over 800 employees, 4 GW of module capacity, and 8 GW of cell capacity. While Runda has built a European distribution network - including offices in Poland, Germany, Bulgaria, and Spain - it does not carry the same Tier 1 bankable status or global procurement footprint as JA Solar.

In terms of technology, the two manufacturers take distinctly different approaches. JA Solar maintains a broad portfolio of 524 panel models, with PERC technology still dominant at roughly 52% of offerings, complemented by a growing TOPCon lineup reaching up to 24.4% efficiency and 740 Wp. Its average portfolio efficiency sits at 20.87%, reflecting the wide range of product tiers from entry-level to premium. Runda Solar, by contrast, offers a tightly focused range of just 6 models, all built on TOPCon cell technology with 100% bifacial construction, delivering an average efficiency of 23.1% and a 30-year warranty - the longest figure in this comparison. For residential rooftop installs where space is constrained and per-panel output matters, Runda's high-efficiency TOPCon bifacial modules are technically compelling. JA Solar's deep and varied catalog makes it a natural fit for utility-scale ground-mount projects and commercial C&I installations, where supply chain reliability and bankability for project financing are non-negotiable requirements.

For international buyers choosing between the two, the decision hinges on project scale and risk profile. JA Solar delivers the assurance of a globally recognized Tier 1 brand with extensive installation references and financial resilience - critical for large-scale procurement and project finance. Runda Solar represents a technically focused alternative centered on modern TOPCon bifacial modules with strong efficiency credentials and a long warranty, suited for buyers prioritizing energy yield per square meter and comfortable working with a smaller, regionally active supplier. JA Solar's scale and bankable status give it a clear structural advantage in large-scale and institutionally financed projects.

Written by claude-sonnet from the figures above.


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

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