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Hounen Solar vs JA Solar - solar panel manufacturer comparison

Hounen Solar
China Founded 2010
Read the Hounen Solar review
VS
JA Solar
China Founded 2005 Tier 1
Read the JA Solar review
At a glance

JA Solar has the broader catalog (504 vs 44 models). JA Solar leads on peak efficiency at 24.80%. Hounen Solar leans bifacial (86% 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
44 504
Highest power
725 Wp 740 Wp
Best efficiency
23.3% 24.8%
Average efficiency
21.7% 21.1%
Bifacial share
86% 47%
Average warranty
29 yrs 28 yrs
01

The two companies

Company facts, not datasheet figures
Hounen Solar

Hounen Solar (Zhejiang Haoneng Optoelectronics) is a Chinese solar PV module manufacturer with its U.S. operations branded as Hounen Solar America. The company produces solar panels for residential, commercial, and utility-scale applications, and in 2023 established a 1 GW module assembly facility in Orangeburg, South...

Founded
2010
Headquarters
Haining, China
Annual capacity
1-2 GW/year
Employees
200-500
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
02

Catalogue against catalogue

Averages over every model in the database
Metric Hounen Solar JA Solar
Catalog & Power
Panel Models 44 504+460
Max Power 725 W 740 W+15 W
Avg Power 569 W+112 W 456 W
Efficiency
Max Efficiency 23.34% 24.80%+1.46 pp
Avg Efficiency 21.75%+0.61 pp 21.13%
Reliability & Warranty
Avg Temp Coefficient -0.325%/°C -0.322%/°C+0.003
Bifacial Share 38 (86%)+39 pp 238 (47%)
Avg Warranty 28.6 yrs+0.8 yr 27.9 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

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

Hounen Solar cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>N-type</strong> (48%)

JA Solar cell technology
Share of their models by cell architecture

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

04

The flagships

Highest-power models from each brand
05

Written summary

Checking cache...

Hounen Solar is a Chinese-founded PV manufacturer established in 2010, operating with 200-500 employees and a production capacity in the range of 1-2 GW annually. The company does not hold Tier 1 bankable status and is not publicly listed on any stock exchange. Its most notable strategic differentiator is its US manufacturing footprint - a 1 GW assembly facility in Orangeburg, South Carolina, serves buyers seeking IRA-compliant, locally assembled modules for the American market. JA Solar, founded in 2005, operates at an entirely different scale: over 37,000 employees, more than 100 GW of annual production capacity, Tier 1 bankable status, and a public listing on the Shenzhen Stock Exchange (SZSE). These fundamentals place JA Solar firmly among the global tier of leading PV manufacturers alongside names like LONGi and Jinko Solar, with the financial credibility and supply chain resilience that institutional buyers and project financiers require.

In terms of product portfolio and technology, JA Solar offers 524 documented panel models with a maximum module power of 740 Wp and a peak efficiency of 24.4%. PERC cell technology accounts for 52% of its lineup, complemented by a growing TOPCon offering under the Deep Blue 4.0 series. Bifacial modules represent roughly 44% of the portfolio, and the average product warranty stands at nearly 28 years. This breadth makes JA Solar well suited for residential rooftop installs requiring mid-range efficiency at competitive cost, commercial C&I projects demanding reliable bankable supply chains, and utility-scale ground-mount developments where bifacial gain and long-term degradation guarantees are critical procurement criteria. Hounen Solar, by contrast, offers a narrower product range focused on PERC modules between 400 W and 720 W, primarily targeting the US residential and light commercial segment where its domestic assembly status carries a pricing and compliance advantage under the Inflation Reduction Act.

For international buyers - including European project developers and installers - evaluating these two manufacturers, JA Solar is the substantially stronger choice across all dimensions: verified Tier 1 bankability, a far larger and more diverse module portfolio, independently confirmed reliability through PVEL Top Performer recognition, and a decades-long track record across global markets. Hounen Solar is a niche player best evaluated specifically in the context of US market IRA compliance requirements, where its local assembly status adds tangible value that JA Solar's imported modules cannot match without additional qualification.

Generated by Claude Sonnet · 2026-05-13

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 386 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.