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JA Solar vs PolyCrown Solar Tech - solar panel manufacturer comparison

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

JA Solar has the broader catalog (504 vs 75 models). JA Solar leads on peak efficiency at 24.80%. JA Solar leans bifacial (47% 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 75
Highest power
740 Wp 730 Wp
Best efficiency
24.8% 23.7%
Average efficiency
21.1% 21.8%
Bifacial share
47% 19%
Average warranty
28 yrs 26 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
PolyCrown Solar Tech

Polycrown Solar Tech Co., Ltd. is a high-tech enterprise founded in 2014, specializing in the research, development, production, and installation of solar products, including solar cells, solar panels, and solar projects. They have passed ISO9001, ISO14001, and OHSAS18001 system certifications, as well as TUV...

Founded
2014
Headquarters
Ningbo, China
Annual capacity
0.2 GW/year
Employees
101-200
02

Catalogue against catalogue

Averages over every model in the database
Metric JA Solar PolyCrown Solar Tech
Catalog & Power
Panel Models 504+429 75
Max Power 740 W+10 W 730 W
Avg Power 456 W 472 W+16 W
Efficiency
Max Efficiency 24.80%+1.11 pp 23.69%
Avg Efficiency 21.13% 21.75%+0.62 pp
Reliability & Warranty
Avg Temp Coefficient -0.322%/°C -0.294%/°C+0.028
Bifacial Share 238 (47%)+29 pp 14 (19%)
Avg Warranty 27.9 yrs+1.9 yr 25.9 yrs

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

PolyCrown Solar Tech offers more 600W+ panels (25% of lineup)

JA Solar cell technology
Share of their models by cell architecture

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

PolyCrown Solar Tech cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>N-type</strong> (47%)

04

The flagships

Highest-power models from each brand
05

Written summary

Checking cache...

JA Solar and PolyCrown Solar Tech are both Chinese photovoltaic module manufacturers, but they occupy entirely different positions in the global solar industry. JA Solar was founded in 2005, is listed on the Shenzhen Stock Exchange, employs over 37,000 people, and operates with a production capacity exceeding 100 GW per year - placing it among the top-ranked module suppliers worldwide. The company holds Tier 1 bankable status as recognized by S&P Global Commodity Insights and jointly topped Wood Mackenzie's Global Solar Module Manufacturer Ranking for the first half of 2025. PolyCrown Solar Tech, founded in 2014 and headquartered in Ningbo, is a significantly smaller operation with 101-200 employees and an annual production capacity of just 0.2 GW. It holds ISO9001, ISO14001, and IEC/TUV certifications but does not appear on any Tier 1 bankability lists. With a portfolio of 75 models compared to JA Solar's 524, PolyCrown serves a narrower segment of the market.

JA Solar's portfolio is dominated by PERC technology (52.1% of models), with a growing share of bifacial panels (44.3%) and newer TOPCon-based products reaching up to 740 Wp and 24.4% peak efficiency. The average panel efficiency across the portfolio is 20.87%, with an average temperature coefficient of -0.3226%/°C. JA Solar is well suited to residential rooftop installs, utility-scale ground-mount projects, and commercial C&I applications where bankability and long-term service infrastructure matter. PolyCrown's portfolio, while smaller, skews toward N-type cell technology (46.7% of models), resulting in a higher average efficiency of 21.75% and a better average temperature coefficient of -0.294%/°C. Its maximum rated output reaches 730 Wp with a peak efficiency of 23.69%. PolyCrown may appeal to cost-sensitive buyers pursuing smaller residential or light commercial installations where project financing requirements are minimal.

For international buyers, the choice hinges primarily on project scale and risk tolerance. JA Solar is the appropriate choice for any project requiring bankable, insurable modules with a globally recognized warranty backed by a financially stable manufacturer - this applies to most utility-scale, C&I, and financed residential projects. PolyCrown's newer N-type-focused portfolio offers competitive average efficiency figures, but the company's limited scale, absence from Tier 1 lists, and smaller workforce introduce meaningful long-term warranty and supply continuity risk that buyers should carefully weigh before committing.

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

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.