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

# JA Solar vs Selfa

JA Solar has the broader catalog (504 vs 34 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | JA Solar | Selfa |
| --- | --- | --- |
| Country | China | Poland |
| Headquarters | Beijing | Bydgoszcz |
| Founded | 2005 | 1992 |
| Employees | 37,289 |  |
| Annual capacity | 100+ GW/year |  |
| Tier 1 | yes | no |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://www.selfa-pv.com](https://www.selfa-pv.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 | Selfa | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 34 | +470 |
| Max Power | 740 W | 550 W | +190 W |
| Avg Power | 456 W | 404 W | +53 W |


## Efficiency


| Measure | JA Solar | Selfa | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 22.60% | +2.20 pp |
| Avg Efficiency | 21.13% | 20.48% | +0.65 pp |


## Reliability & Warranty


| Measure | JA Solar | Selfa | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.348%/°C | +0.026 |
| Bifacial Share | 238 (47%) | 3 (9%) | +38 pp |
| Avg Warranty | 27.9 yrs | 27.8 yrs | +0.1 yr |


## Efficiency distribution

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


| Efficiency band | JA Solar | Selfa |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 13 (38.2%) |
| 20-21% | 99 (19.6%) | 8 (23.5%) |
| 21-22% | 112 (22.2%) | 7 (20.6%) |
| 22-23% | 107 (21.2%) | 6 (17.6%) |
| 23%+ | 74 (14.7%) | 0 |


## Power distribution

JA Solar offers more 600W+ panels (14% of lineup)


| Power band | JA Solar | Selfa |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 16 (47.1%) |
| 400-499W | 173 (34.3%) | 12 (35.3%) |
| 500-599W | 120 (23.8%) | 6 (17.6%) |
| 600-699W | 60 (11.9%) | 0 |
| 700W+ | 9 (1.8%) | 0 |


## Cell technology

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

Dominant cell tech: **PERC** (74%)


| Technology | JA Solar | Selfa |
| --- | --- | --- |
| PERC | 247 (49.0%) | 25 (73.5%) |
| TOPCon | 146 (29.0%) | 0 |
| N-type | 90 (17.9%) | 9 (26.5%) |
| 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, Selfa


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [SV144M.5.3-550](https://comparepv.com/panel/selfa-sv144m-5-3-550) | 550 | 21.3 | -0.360 | Monocrystalline |
| 2 | [SV144M.5.3-545](https://comparepv.com/panel/selfa-sv144m-5-3-545) | 545 | 21.1 | -0.360 | Monocrystalline |
| 3 | [SV144M.5.3-540](https://comparepv.com/panel/selfa-sv144m-5-3-540) | 540 | 20.9 | -0.360 | Monocrystalline |
| 4 | [SV144M.5.1-540](https://comparepv.com/panel/tcl-zhonghuan-sv144m-5-1-540) | 540 | 20.9 | -0.360 | Monocrystalline |
| 5 | [SV120M.3.4-500](https://comparepv.com/panel/selfa-sv120m-3-4-500) | 500 | 22.6 | -0.300 | Monocrystalline |
| 6 | [SV120M.2.4-500](https://comparepv.com/panel/selfa-sv120m-2-4-500) | 500 | 22.6 | -0.300 | Monocrystalline |
| 7 | [SV120M.3.4-480](https://comparepv.com/panel/selfa-sv120m-3-4-480) | 480 | 21.7 | -0.300 | Monocrystalline |
| 8 | [SV108M.2.4-450](https://comparepv.com/panel/selfa-sv108m-2-4-450) | 450 | 22.5 | -0.300 | Monocrystalline |
| 9 | [SV108M.3.4-450](https://comparepv.com/panel/tcl-zhonghuan-sv108m-3-4-450) | 450 | 22.5 | -0.300 | Monocrystalline |
| 10 | [SV108M.2.4-440](https://comparepv.com/panel/selfa-sv108m-2-4-440) | 440 | 22.0 | -0.300 | Monocrystalline |


## Summary

JA Solar, founded in 2005 in China, is one of the world's largest photovoltaic module manufacturers, with production capacity exceeding 100 GW and a workforce of over 37,000 employees. The company is listed on the Shenzhen Stock Exchange (SZSE) and holds Tier 1 bankable status, confirming its creditworthiness with independent analysts and lending institutions globally. JA Solar ranked second in SolarReviews' 2025 top manufacturer rankings and achieved Top Performer status in PVEL's 2025 reliability scorecard for the tenth consecutive time, underscoring its consistent production quality at scale. Selfa, by contrast, is a Polish manufacturer headquartered in Szczecin, founded in 1992 as part of a broader industrial group, with photovoltaic module production beginning around 2012. The company currently offers 29 panel models targeted primarily at the Polish and Central European residential market. Selfa does not hold Tier 1 certification but benefits from a dense domestic service network and the financial backing of a parent company with operations across multiple industrial sectors - a factor that supports long-term warranty viability.

From a technology standpoint, both manufacturers lead their respective portfolios with PERC cell technology - JA Solar at 52.1% of its 524-panel range, Selfa at 72.4% of its 29-panel lineup. JA Solar has a substantially broader high-performance offering, with maximum panel output reaching 740 Wp and peak module efficiency of 24.4%, compared to Selfa's 550 Wp and 22.6%. JA Solar's portfolio includes bifacial modules across 44.3% of its range, well above Selfa's 6.9%, and its average temperature coefficient of -0.323%/°C is more favorable than Selfa's -0.346%/°C - an advantage in high-temperature operating conditions. JA Solar is well suited to utility-scale ground-mount projects, large commercial and industrial (C&I) rooftop installations, and any project where Tier 1 bankability is a lender requirement. Selfa is better positioned for residential rooftop installations in Poland, where buyers value local warranty enforcement, proximity of service technicians, and the option of supporting domestic manufacturing.

For buyers selecting between the two, JA Solar is the clear choice for large-scale or finance-backed projects given its global track record, superior technology breadth, and Tier 1 certification. Selfa represents a credible regional option for smaller residential or light commercial installations in Poland where local servicing, domestic origin, and straightforward warranty claims matter more than maximum power output or portfolio range.

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


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

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