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

# JA Solar vs Renewsys

JA Solar has the broader catalog (504 vs 45 models). JA Solar leads on peak efficiency at 24.80%. Renewsys leans bifacial (100% of lineup).


## The two companies


| Attribute | JA Solar | Renewsys |
| --- | --- | --- |
| Country | China | India |
| Headquarters | Beijing | Mumbai |
| Founded | 2005 | 2011 |
| Employees | 37,289 | 1,071 |
| Annual capacity | 100+ GW/year | 2.5 GW/year |
| Tier 1 | yes | yes |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [http://www.renewsysworld.com](http://www.renewsysworld.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...

RenewSys is the first integrated manufacturer of Solar PV Modules and its key components - Encapsulants, Backsheets, and Solar PV Cells. Established in 2012, RenewSys is the renewable energy arm of the ENPEE Group, a diversified global conglomerate. They have manufacturing facilities in Hyderabad and Bengaluru.


## Catalog & Power


| Measure | JA Solar | Renewsys | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 45 | +459 |
| Max Power | 740 W | 650 W | +90 W |
| Avg Power | 456 W | 542 W | +86 W |


## Efficiency


| Measure | JA Solar | Renewsys | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 23.64% | +1.16 pp |
| Avg Efficiency | 21.13% | 22.57% | +1.43 pp |


## Reliability & Warranty


| Measure | JA Solar | Renewsys | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.294%/°C | +0.028 |
| Bifacial Share | 238 (47%) | 45 (100%) | +53 pp |
| Avg Warranty | 27.9 yrs | 30.0 yrs | +2.1 yr |


## Efficiency distribution

Renewsys skews to higher efficiency: 24% of lineup is 23%+


| Efficiency band | JA Solar | Renewsys |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 0 |
| 21-22% | 112 (22.2%) | 8 (17.8%) |
| 22-23% | 107 (21.2%) | 26 (57.8%) |
| 23%+ | 74 (14.7%) | 11 (24.4%) |


## Power distribution

Renewsys offers more 600W+ panels (36% of lineup)


| Power band | JA Solar | Renewsys |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 0 |
| 400-499W | 173 (34.3%) | 17 (37.8%) |
| 500-599W | 120 (23.8%) | 12 (26.7%) |
| 600-699W | 60 (11.9%) | 16 (35.6%) |
| 700W+ | 9 (1.8%) | 0 |


## Cell technology

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

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


| Technology | JA Solar | Renewsys |
| --- | --- | --- |
| PERC | 247 (49.0%) | 0 |
| TOPCon | 146 (29.0%) | 45 (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, Renewsys


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [DESERV EXTREME 156X-650](https://comparepv.com/panel/renewsys-deserv-extreme-156x-650) | 650 | 23.3 | -0.292 | Monocrystalline |
| 2 | [DESERV EXTREME 156X-645](https://comparepv.com/panel/renewsys-deserv-extreme-156x-645) | 645 | 23.1 | -0.292 | Monocrystalline |
| 3 | [DESERV EXTREME 156X-640](https://comparepv.com/panel/renewsys-deserv-extreme-156x-640) | 640 | 22.9 | -0.292 | Monocrystalline |
| 4 | [DESERV Extreme 132X 635](https://comparepv.com/panel/renewsys-deserv-extreme-132x-635) | 635 | 23.5 | -0.300 | Monocrystalline |
| 5 | [DESERV EXTREME 156X-635](https://comparepv.com/panel/renewsys-deserv-extreme-156x-635) | 635 | 22.8 | -0.292 | Monocrystalline |
| 6 | [DESERV EXTREME 156X-630](https://comparepv.com/panel/renewsys-deserv-extreme-156x-630) | 630 | 22.6 | -0.292 | Monocrystalline |
| 7 | [DESERV Extreme 132X 630](https://comparepv.com/panel/renewsys-deserv-extreme-132x-630) | 630 | 23.4 | -0.300 | Monocrystalline |
| 8 | [DESERV EXTREME 156X-625](https://comparepv.com/panel/renewsys-deserv-extreme-156x-625) | 625 | 22.4 | -0.292 | Monocrystalline |
| 9 | [DESERV Extreme 132X 625](https://comparepv.com/panel/renewsys-deserv-extreme-132x-625) | 625 | 23.2 | -0.300 | Monocrystalline |
| 10 | [DESERV EXTREME 156X-620](https://comparepv.com/panel/renewsys-deserv-extreme-156x-620) | 620 | 22.2 | -0.292 | Monocrystalline |


## Summary

JA Solar, founded in 2005 and headquartered in China, is one of the largest solar panel manufacturers in the world, ranking second globally in module shipments and listed on the Shenzhen Stock Exchange. With over 37,000 employees and a production capacity exceeding 100 GW, the company holds Tier 1 bankable status and maintains a strong commercial presence across Europe, North America, and Asia. Renewsys, established in 2011 in Mumbai, India, is a significantly smaller but vertically integrated manufacturer with around 1,071 employees and a production capacity of 2.5 GW. Also holding Tier 1 bankable status, Renewsys has positioned itself as a leading domestic supplier in India and is expanding into select emerging markets, though its footprint in European distribution channels remains limited compared to the Chinese manufacturer.

JA Solar's portfolio of 524 modules spans PERC technology - which accounts for over 52% of its range - alongside a growing lineup of TOPCon products, with a maximum panel output of 740 Wp and peak module efficiency of 24.4%. An average module power of approximately 442 Wp, a temperature coefficient averaging -0.32%/°C, and product warranties extending to nearly 28 years make JA Solar a versatile choice for residential rooftop installs, commercial C&I projects, and large utility-scale ground-mount farms. The company earned "Top Brand PV" recognition in Poland and eight other European markets from EUPD Research and achieved PVEL Top Performer status for the tenth consecutive time in 2025. Renewsys differentiates itself through deep vertical integration - manufacturing not only modules but also encapsulants, backsheets, and solar cells domestically - and its TOPCon module range reaches efficiencies up to 23.3% with outputs up to 650 Wp. Its EcoVadis Platinum sustainability rating, the first ever awarded to an Indian solar manufacturer (May 2025), positions it as an environmentally credible supplier for ESG-focused procurement, particularly in utility-scale and C&I projects across South Asia.

For buyers outside Asia, JA Solar is the more immediately practical choice given its global distribution infrastructure, well-established European market recognition, and a comprehensive product range covering all major installation types. Renewsys represents a compelling option for projects based in India or for buyers specifically seeking a non-Chinese Tier 1 supply chain with strong sustainability credentials, but its limited European distribution and smaller production scale mean that warranty support logistics and long-term module availability require careful due diligence before committing to large-scale deployments.

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


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

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