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

# JA Solar vs Solaria

JA Solar has the broader catalog (504 vs 27 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | JA Solar | Solaria |
| --- | --- | --- |
| Country | China | Spain |
| Headquarters | Beijing | Madrid |
| Founded | 2005 | 2002 |
| Employees | 37,289 | 235 |
| Annual capacity | 100+ GW/year | 1.658 GW/year |
| Tier 1 | yes |  |
| Listed | SZSE: 002459 | BME (Madrid Stock Exchange): SLR |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.solaria.com](https://www.solaria.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...

Solaria is a leading European company focused on developing and generating solar photovoltaic energy. The company aims to contribute to decarbonization by creating a global energy model based on clean energy. Solaria specializes in the implementation and development of solar photovoltaic technology, from manufacturing...


## Catalog & Power


| Measure | JA Solar | Solaria | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 27 | +477 |
| Max Power | 740 W | 680 W | +60 W |
| Avg Power | 456 W | 436 W | +20 W |


## Efficiency


| Measure | JA Solar | Solaria | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 21.92% | +2.88 pp |
| Avg Efficiency | 21.13% | 19.96% | +1.17 pp |


## Reliability & Warranty


| Measure | JA Solar | Solaria | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.360%/°C | +0.038 |
| Bifacial Share | 238 (47%) | 5 (19%) | +29 pp |
| Avg Warranty | 27.9 yrs | 26.5 yrs | +1.4 yr |


## Efficiency distribution

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


| Efficiency band | JA Solar | Solaria |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 13 (48.1%) |
| 20-21% | 99 (19.6%) | 9 (33.3%) |
| 21-22% | 112 (22.2%) | 5 (18.5%) |
| 22-23% | 107 (21.2%) | 0 |
| 23%+ | 74 (14.7%) | 0 |


## Power distribution

Solaria offers more 600W+ panels (19% of lineup)


| Power band | JA Solar | Solaria |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 14 (51.9%) |
| 400-499W | 173 (34.3%) | 8 (29.6%) |
| 500-599W | 120 (23.8%) | 0 |
| 600-699W | 60 (11.9%) | 5 (18.5%) |
| 700W+ | 9 (1.8%) | 0 |


## Cell technology

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

Dominant cell tech: **TOPCon** (19%)


| Technology | JA Solar | Solaria |
| --- | --- | --- |
| PERC | 247 (49.0%) | 4 (14.8%) |
| TOPCon | 146 (29.0%) | 5 (18.5%) |
| N-type | 90 (17.9%) | 0 |
| Unknown | 16 (3.2%) | 18 (66.7%) |
| 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, Solaria


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [SPV680-TG12-132BD](https://comparepv.com/panel/solaria-spv680-tg12-132bd) | 680 | 21.9 | -0.300 | Monocrystalline |
| 2 | [SPV675-TG12-132BD](https://comparepv.com/panel/solaria-spv675-tg12-132bd) | 675 | 21.8 | -0.300 | Monocrystalline |
| 3 | [SPV670-TG12-132BD](https://comparepv.com/panel/solaria-spv670-tg12-132bd) | 670 | 21.6 | -0.300 | Monocrystalline |
| 4 | [SPV665-TG12-132BD](https://comparepv.com/panel/solaria-spv665-tg12-132bd) | 665 | 21.4 | -0.300 | Monocrystalline |
| 5 | [SPV660-TG12-132BD](https://comparepv.com/panel/solaria-spv660-tg12-132bd) | 660 | 21.3 | -0.300 | Monocrystalline |
| 6 | [PowerXT 430R-PL](https://comparepv.com/panel/solaria-powerxt-430r-pl) | 430 | 20.4 | -0.390 | Monocrystalline |
| 7 | [Solaria PowerXT-430C-PD](https://comparepv.com/panel/solaria-solaria-powerxt-430c-pd) | 430 | 19.8 | -0.390 | Monocrystalline |
| 8 | [PowerXT 420R-PL](https://comparepv.com/panel/solaria-powerxt-420r-pl) | 420 | 19.9 | -0.390 | Monocrystalline |
| 9 | [Solaria PowerXT-420C-BD](https://comparepv.com/panel/solaria-solaria-powerxt-420c-bd) | 420 | 19.4 | -0.390 | Monocrystalline |
| 10 | [Solaria PowerXT-420C-PD](https://comparepv.com/panel/solaria-solaria-powerxt-420c-pd) | 420 | 19.4 | -0.390 | Monocrystalline |


## Summary

JA Solar was founded in 2005 in China and has grown into one of the world's leading solar panel manufacturers, with a production capacity exceeding 100 GW, more than 37,000 employees, and a listing on the Shenzhen Stock Exchange (SZSE). Its confirmed Tier 1 bankable status makes it a trusted partner for project financiers and large-scale developers across global markets. Solaria, founded in 2002 and headquartered in Spain, occupies a very different position - listed on the Madrid Stock Exchange (BME) with 235 employees and a production capacity of 1.658 GW, the company has historically oriented itself toward solar energy generation and project development rather than high-volume module manufacturing, which limits its direct comparability with mass-market producers. Solaria does not carry Tier 1 bankable status in the available data, a meaningful distinction for institutional procurement.

JA Solar's portfolio spans 524 models led by PERC technology (over 52% of the lineup), with a growing share of bifacial modules at 44% of the range and a maximum efficiency of 24.4% against a portfolio average of 20.9%. Its average temperature coefficient of -0.32%/°C is notably favorable, making these modules well suited for utility-scale ground-mount projects, commercial C&I rooftop systems, and residential installs in warm climates alike. Solaria offers a narrower catalog of 27 models with a maximum efficiency of 21.92% and an average of 19.96%; its temperature coefficient averages -0.36%/°C, and only 18.5% of its portfolio is bifacial. Cell technology is listed as unknown for the majority of its lineup, and the shorter average product warranty of 26.5 years versus 27.9 years for JA Solar is a marginal but measurable difference for long-horizon project underwriting.

For most international buyers - particularly those procuring modules for bankable utility-scale or commercial projects - JA Solar offers a more compelling combination of scale, certified reliability, technology breadth, and portfolio depth. Solaria could be a relevant alternative for European developers who prioritize supply chain proximity, shorter logistics lead times from a regional manufacturer, or ESG criteria tied to non-Asian sourcing, but its narrower product range and smaller production footprint make it a niche rather than a mainstream choice for large procurement volumes.

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


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

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