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

# JA Solar vs VOLT Polska

JA Solar has the broader catalog (504 vs 0 models). JA Solar leans bifacial (47% of lineup).


## The two companies


| Attribute | JA Solar | VOLT Polska |
| --- | --- | --- |
| Country | China | Poland |
| Headquarters | Beijing | Sopot |
| Founded | 2005 | 2010 |
| Employees | 37,289 | 51-100 |
| Annual capacity | 100+ GW/year |  |
| Tier 1 | yes |  |
| Listed | SZSE: 002459 |  |
| Website | [https://www.jasolar.com](https://www.jasolar.com) | [https://voltpolska.pl](https://voltpolska.pl) |

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...

VOLT Polska is a Polish manufacturer and distributor of power electronics and energy equipment, including inverters, voltage converters, emergency power supplies, and solar panels. The company serves residential and commercial markets with a broad product range covering photovoltaic components, battery chargers, and...


## Catalog & Power


| Measure | JA Solar | VOLT Polska | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 0 | +504 |
| Max Power | 740 W | 0 W | +740 W |
| Avg Power | 456 W | 0 W | +456 W |


## Efficiency


| Measure | JA Solar | VOLT Polska | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | - |  |
| Avg Efficiency | 21.13% | - |  |


## Reliability & Warranty


| Measure | JA Solar | VOLT Polska | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | - |  |
| Bifacial Share | 238 (47%) | 0 (0%) | +47 pp |
| Avg Warranty | 27.9 yrs | - |  |


## Efficiency distribution

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


| Efficiency band | JA Solar | VOLT Polska |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 0 |
| 21-22% | 112 (22.2%) | 0 |
| 22-23% | 107 (21.2%) | 0 |
| 23%+ | 74 (14.7%) | 0 |


## Power distribution

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


| Power band | JA Solar | VOLT Polska |
| --- | --- | --- |
| \<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%) | 0 |


## Cell technology

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


| Technology | JA Solar | VOLT Polska |
| --- | --- | --- |
| PERC | 247 (49.0%) | 0 |
| TOPCon | 146 (29.0%) | 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 |


## Summary

JA Solar and VOLT Polska represent fundamentally different tiers of the solar PV market. JA Solar, founded in 2005 and headquartered in China, is one of the world's largest solar panel manufacturers, with over 37,000 employees and a verified production capacity exceeding 100 GW. It holds Tier 1 bankable status from S&P Global Commodity Insights and ranked first globally in Wood Mackenzie's Solar Module Manufacturer ranking for the first half of 2025 - jointly with Trinasolar. The company's portfolio spans 524 panel models, reaching a maximum output of 740 Wp and a peak efficiency of 24.4%, with an average portfolio efficiency of approximately 20.9%. PERC technology leads the portfolio at over 52% of models, with TOPCon gaining ground in newer product lines. VOLT Polska, founded in 2010 and based in Poland, is primarily a manufacturer of UPS systems, voltage converters, rectifiers, and battery chargers, employing between 51 and 100 people. Its solar offering consists of small monocrystalline and polycrystalline panels - primarily in the sub-200 W range - designed as accessories for off-grid and emergency backup systems rather than grid-connected installations. The company does not appear on any recognized Tier 1 ranking and provides no certified panel portfolio data in the prosumer or utility segment.

For practical applications, JA Solar addresses a broad spectrum of solar project types. Its high-wattage modules, bifacial share of 44% across the portfolio, and a average temperature coefficient of Pmax around -0.32%/°C make it suitable for residential rooftop installs, commercial and industrial (C&I) rooftops, and utility-scale ground-mount projects worldwide. Its near-28-year average warranty profile and bankability status simplify project financing. VOLT Polska's solar products serve a much narrower niche - standalone off-grid setups, backup power for heating systems, and small autonomous installations where integration with their broader ecosystem of MPPT regulators and sinusPRO inverters adds practical value. The company is a recognizable brand among Polish DIY installers and small integrators working outside the grid-connected prosumer market.

For international buyers or Polish installers selecting between these two for any grid-tied project, JA Solar is the clear choice - it offers independently verified performance data, global supply chain reliability, broad distributor availability across Europe, and the bankability required for bank financing and subsidy programs. VOLT Polska is not a meaningful competitor in that space and should be evaluated only for off-grid or backup power applications where its complementary product lineup is the primary draw.

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


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Source: https://comparepv.com/ja-solar-vs-volt-polska

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