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

# JA Solar vs Ulica Solar

JA Solar has the broader catalog (504 vs 76 models). JA Solar leads on peak efficiency at 24.80%. Ulica Solar leans bifacial (58% of lineup).


## The two companies


| Attribute | JA Solar | Ulica Solar |
| --- | --- | --- |
| Country | China | China |
| Headquarters | Beijing | Jiaxing |
| Founded | 2005 | 2014 |
| 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.ulicasolar.com](https://www.ulicasolar.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 | Ulica Solar | Margin |
| --- | --- | --- | --- |
| Panel Models | 504 | 76 | +428 |
| Max Power | 740 W | 715 W | +25 W |
| Avg Power | 456 W | 564 W | +107 W |


## Efficiency


| Measure | JA Solar | Ulica Solar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 24.80% | 23.88% | +0.92 pp |
| Avg Efficiency | 21.13% | 22.26% | +1.13 pp |


## Reliability & Warranty


| Measure | JA Solar | Ulica Solar | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.322%/°C | -0.303%/°C | +0.019 |
| Bifacial Share | 238 (47%) | 44 (58%) | +11 pp |
| Avg Warranty | 27.9 yrs | 29.3 yrs | +1.4 yr |


## Efficiency distribution

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


| Efficiency band | JA Solar | Ulica Solar |
| --- | --- | --- |
| \<20% | 112 (22.2%) | 0 |
| 20-21% | 99 (19.6%) | 4 (5.3%) |
| 21-22% | 112 (22.2%) | 16 (21.1%) |
| 22-23% | 107 (21.2%) | 45 (59.2%) |
| 23%+ | 74 (14.7%) | 11 (14.5%) |


## Power distribution

Ulica Solar offers more 600W+ panels (43% of lineup)


| Power band | JA Solar | Ulica Solar |
| --- | --- | --- |
| \<400W | 142 (28.2%) | 1 (1.3%) |
| 400-499W | 173 (34.3%) | 22 (28.9%) |
| 500-599W | 120 (23.8%) | 20 (26.3%) |
| 600-699W | 60 (11.9%) | 29 (38.2%) |
| 700W+ | 9 (1.8%) | 4 (5.3%) |


## Cell technology

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

Dominant cell tech: **TOPCon** (95%)


| Technology | JA Solar | Ulica Solar |
| --- | --- | --- |
| PERC | 247 (49.0%) | 0 |
| TOPCon | 146 (29.0%) | 72 (94.7%) |
| N-type | 90 (17.9%) | 4 (5.3%) |
| 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, Ulica Solar


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [UL-715M-132DGN](https://comparepv.com/panel/ulica-solar-ul-715m-132dgn) | 715 | 23.0 | -0.290 | Monocrystalline |
| 2 | [UL-710M-132DGN](https://comparepv.com/panel/ulica-solar-ul-710m-132dgn) | 710 | 22.9 | -0.290 | Monocrystalline |
| 3 | [UL-705M-132DGN](https://comparepv.com/panel/ulica-solar-ul-705m-132dgn) | 705 | 22.7 | -0.290 | Monocrystalline |
| 4 | [UL-700M-132DGN](https://comparepv.com/panel/ulica-solar-ul-700m-132dgn) | 700 | 22.5 | -0.290 | Monocrystalline |
| 5 | [UL-670M-132DG](https://comparepv.com/panel/ulica-solar-ul-670m-132dg) | 670 | 21.6 | -0.340 | Monocrystalline |
| 6 | [UL-670M-132HV](https://comparepv.com/panel/ulica-solar-ul-670m-132hv) | 670 | 21.6 | -0.340 | Monocrystalline |
| 7 | [UL-665M-132HV](https://comparepv.com/panel/ulica-solar-ul-665m-132hv) | 665 | 21.4 | -0.340 | Monocrystalline |
| 8 | [UL-665M-132DG](https://comparepv.com/panel/ulica-solar-ul-665m-132dg) | 665 | 21.4 | -0.340 | Monocrystalline |
| 9 | [UL-660M-132DG](https://comparepv.com/panel/ulica-solar-ul-660m-132dg) | 660 | 21.2 | -0.340 | Monocrystalline |
| 10 | [UL-660M-132HV](https://comparepv.com/panel/ulica-solar-ul-660m-132hv) | 660 | 21.2 | -0.340 | Monocrystalline |


## Summary

JA Solar, founded in 2005 and listed on the Shenzhen Stock Exchange (SZSE), employs over 37,000 people and operates annual production capacity exceeding 100 GW, placing it among the top global solar module manufacturers. The company holds Tier 1 bankable status, which facilitates project financing across institutional, commercial, and utility-scale buyers worldwide. Wood Mackenzie ranked JA Solar jointly at the top of its global module manufacturer ranking for the first half of 2025, with the company shipping approximately 75-79 GW in 2024. Its catalogue spans 524 panel models, with peak power reaching 740 Wp and maximum efficiency of 24.4%. Ulica Solar, founded in 2014, is a considerably smaller Chinese manufacturer that does not hold Tier 1 bankable status. It offers a focused portfolio of 76 models, with the vast majority - 94.7% - based on TOPCon cell technology, yielding a noticeably higher average efficiency of 22.26% and average module power of 563.6 Wp, compared to JA Solar's averages of 20.87% and 441.7 Wp respectively.

JA Solar's broad product range - spanning PERC-dominant modules across a wide power spectrum - suits a diverse set of deployment scenarios, from residential rooftop installs to large utility-scale ground-mount projects and commercial C&I applications. Its global distribution network, financial stability, and Tier 1 standing make it a low-risk procurement choice for EPCs and developers who require bankable products backed by long-term warranty coverage (averaging 27.9 years across the portfolio). Ulica Solar's competitive edge lies in its technology-forward TOPCon concentration, which delivers higher average efficiency, a more favorable temperature coefficient (-0.303%/°C vs. -0.323% for JA Solar), and a greater share of bifacial modules (57.9% vs. 44.3%) - attributes that benefit space-constrained commercial rooftops, dual-use agrivoltaic systems, and ground-mount installations seeking maximum energy yield per panel.

For international buyers where bankability, supply chain resilience, and broad product availability are primary criteria, JA Solar is the more established and lower-risk option. Ulica Solar presents a technically compelling alternative for buyers prioritizing modern TOPCon efficiency gains and bifacial performance, though its absence from the Tier 1 bankable list may limit suitability for project-financed or institutionally funded developments where lender approval of module suppliers is required.

Written by claude-sonnet from the figures above.


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- [AIKO vs Ulica Solar](https://comparepv.com/aiko-vs-ulica-solar)
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- [ARTsolar vs Ulica Solar](https://comparepv.com/artsolar-vs-ulica-solar)


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

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