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

# JA Solar vs Tata Power Solar

JA Solar has the broader catalog (504 vs 38 models). JA Solar leads on peak efficiency at 24.80%. Tata Power Solar leans bifacial (100% of lineup).


## The two companies


| Attribute | JA Solar | Tata Power Solar |
| --- | --- | --- |
| Country | China | India |
| Headquarters | Beijing | Mumbai, Maharashtra |
| Founded | 2005 | 1989 |
| Employees | 37,289 | 1,245 |
| Annual capacity | 100+ GW/year | 4.3 GW/year |
| Tier 1 | yes | yes |
| Listed | SZSE: 002459 | NSE: TATAPOWER |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.tatapower.com](https://www.tatapower.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...

Tata Power Solar is India's largest integrated solar company. They operate in manufacturing solar modules, EPC services for solar power projects, and creating innovative solar products. The company is committed to providing access to energy, especially in remote, off-grid parts of India.


## Catalog & Power


| Measure | JA Solar | Tata Power Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 38 | +466 |
| Max Power | 740 W | 642 W | +98 W |
| Avg Power | 456 W | 580 W | +124 W |


## Efficiency


| Measure | JA Solar | Tata Power Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 23.05% | +1.75 pp |
| Avg Efficiency | 21.13% | 21.52% | +0.38 pp |


## Reliability & Warranty


| Measure | JA Solar | Tata Power Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.354%/°C | +0.032 |
| Bifacial Share | 238 (47%) | 38 (100%) | +53 pp |
| Avg Warranty | 27.9 yrs | 28.4 yrs | +0.5 yr |


## Efficiency distribution

JA Solar skews to higher efficiency: 15% of lineup is 23%+


| Efficiency band | JA Solar | Tata Power Solar |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 12 (31.6%) |
| 21-22% | 112 (22.2%) | 14 (36.8%) |
| 22-23% | 107 (21.2%) | 10 (26.3%) |
| 23%+ | 74 (14.7%) | 2 (5.3%) |


## Power distribution

Tata Power Solar offers more 600W+ panels (24% of lineup)


| Power band | JA Solar | Tata Power Solar |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 0 |
| 400-499W | 173 (34.3%) | 0 |
| 500-599W | 120 (23.8%) | 29 (76.3%) |
| 600-699W | 60 (11.9%) | 9 (23.7%) |
| 700W+ | 9 (1.8%) | 0 |


## Cell technology

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

Dominant cell tech: **PERC** (82%)


| Technology | JA Solar | Tata Power Solar |
| --- | --- | --- |
| PERC | 247 (49.0%) | 31 (81.6%) |
| TOPCon | 146 (29.0%) | 7 (18.4%) |
| 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, Tata Power Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [TP642LG10B](https://comparepv.com/panel/tata-power-solar-tp642lg10b) | 642 | 23.1 | -0.370 | Monocrystalline |
| 2 | [TP637LG10B](https://comparepv.com/panel/tata-power-solar-tp637lg10b) | 637 | 22.9 | -0.370 | Monocrystalline |
| 3 | [TP631LG10B](https://comparepv.com/panel/tata-power-solar-tp631lg10b) | 631 | 22.7 | -0.370 | Monocrystalline |
| 4 | [TP626LG10B](https://comparepv.com/panel/tata-power-solar-tp626lg10b) | 626 | 22.5 | -0.370 | Monocrystalline |
| 5 | [TP621LG10B](https://comparepv.com/panel/tata-power-solar-tp621lg10b) | 621 | 22.3 | -0.370 | Monocrystalline |
| 6 | [TP615LG10B](https://comparepv.com/panel/tata-power-solar-tp615lg10b) | 615 | 22.1 | -0.370 | Monocrystalline |
| 7 | [TP610LG10B](https://comparepv.com/panel/tata-power-solar-tp610lg10b) | 610 | 21.9 | -0.370 | Monocrystalline |
| 8 | [TP600LG10TB](https://comparepv.com/panel/tata-power-solar-tp600lg10tb) | 600 | 21.5 | -0.360 | Monocrystalline |
| 9 | [TP600LG10B](https://comparepv.com/panel/tata-power-solar-tp600lg10b) | 600 | 21.5 | -0.370 | Monocrystalline |
| 10 | [TP595LG10TB](https://comparepv.com/panel/tata-power-solar-tp595lg10tb) | 595 | 21.4 | -0.360 | Monocrystalline |


## Summary

JA Solar and Tata Power Solar are both Tier 1 bankable manufacturers and recognized Top Performers in the 2025 Kiwa PVEL Module Reliability Scorecard, yet they differ sharply in scale, geography, and market positioning. JA Solar, founded in 2005 in China and listed on the Shenzhen Stock Exchange, has grown into one of the largest solar module producers in the world, employing over 37,000 people with a production capacity exceeding 100 GW - ranking second globally in module shipments in 2025. Tata Power Solar, founded in 1989 in India and listed on the National Stock Exchange, brings more than three decades of manufacturing heritage but operates on a considerably smaller scale, with approximately 1,245 employees and a production capacity of 4.3 GW. Tata Power Solar is primarily a domestic Indian champion - it led India's rooftop solar installation market in 2025 with a 19.2% share - whereas JA Solar operates through a truly global supply network spanning Europe, the Americas, and Asia.

JA Solar's portfolio of 524 panel models is among the broadest in the industry, with an average output of 441.7 Wp, a maximum of 740 Wp, and peak efficiency reaching 24.4%. PERC cells account for 52.1% of its range, complemented by TOPCon and other advanced technologies, with 44.3% of models being bifacial and an average product warranty of 27.85 years. A favorable average temperature coefficient of -0.323%/°C per degree Celsius adds to its performance credentials in warm climates. This breadth makes JA Solar a versatile fit across residential rooftop installs, utility-scale ground-mount projects, and commercial C&I applications. Tata Power Solar offers a narrower but highly focused lineup of 38 models, all bifacial, with a higher average output of 579.8 Wp and a slightly higher average efficiency of 21.5%. The entirely bifacial portfolio and PERC concentration of 81.6% make these panels well suited for ground-mount and C&I projects where rear-side irradiance gain is available. Its average warranty of 28.42 years edges slightly ahead of JA Solar, though its average temperature coefficient of -0.354%/°C is somewhat less favorable.

For international buyers selecting between the two, geography and supply chain access are the deciding factors. JA Solar is the practical choice for projects in Europe, the Americas, and most export markets, given its unmatched production capacity, product breadth, established distribution, and a long track record in independent reliability testing. Tata Power Solar is a compelling option specifically for buyers operating in India, where its local manufacturing base, domestic service network, and strong government-procurement standing provide a real competitive edge - but its limited international footprint makes it difficult to recommend for projects outside South Asia.

Written by claude-sonnet from the figures above.


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Source: https://comparepv.com/ja-solar-vs-tata-power-solar

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