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JA Solar vs Ulica Solar - solar panel manufacturer comparison

JA Solar
China Founded 2005 Tier 1
Read the JA Solar review
VS
Ulica Solar
China Founded 2014
Read the Ulica Solar review
At a glance

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).

Both catalogues are read from the manufacturers' own datasheets. A brand is not scored against the market here, only against the other brand on this page.

Panel models
504 76
Highest power
740 Wp 715 Wp
Best efficiency
24.8% 23.9%
Average efficiency
21.1% 22.3%
Bifacial share
47% 58%
Average warranty
28 yrs 29 yrs
01

The two companies

Company facts, not datasheet figures
JA Solar

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...

Founded
2005
Headquarters
Beijing, China
Annual capacity
100+ GW/year
Employees
37,289
Tier 1 bankable
Yes
Ulica Solar
Founded
2014
Headquarters
Jiaxing, China
02

Catalogue against catalogue

Averages over every model in the database
Metric JA Solar Ulica Solar
Catalog & Power
Panel Models 504+428 76
Max Power 740 W+25 W 715 W
Avg Power 456 W 564 W+107 W
Efficiency
Max Efficiency 24.80%+0.92 pp 23.88%
Avg Efficiency 21.13% 22.26%+1.13 pp
Reliability & Warranty
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

An average over a catalogue describes the range a manufacturer publishes, not the module you would buy. A brand with two flagship panels and eighty older ones averages worse than one that has retired its back catalogue.

03

What each of them builds

Cell technology across the market
Efficiency spread
Share of each catalogue in every efficiency band

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

Power spread
Share of each catalogue in every power band

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

JA Solar cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>PERC</strong> (49%)

Ulica Solar cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>TOPCon</strong> (95%)

04

The flagships

Highest-power models from each brand
05

Written summary

Checking cache...

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.

Generated by Claude Sonnet · 2026-05-12

06

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Something missing from a catalogue? Both lists are built from the datasheets in the database. If a model is absent, it has not been ingested yet.

Shop prices: See 393 JA Solar offers · See 7 Ulica Solar offers

Comparisons are computed from manufacturer datasheets held in the ComparePV database and may not reflect a brand's complete current lineup. Nothing on this page is paid placement.