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Epever vs JA Solar - solar panel manufacturer comparison

Epever
China Founded 2007
Read the Epever 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 0 models). 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
0 504
Highest power
0 Wp 740 Wp
Best efficiency
- 24.8%
Average efficiency
- 21.1%
Bifacial share
0% 47%
Average warranty
- 28 yrs
01

The two companies

Company facts, not datasheet figures
Epever

Epever (Beijing Epsolar Technology Co., Ltd.) is a Chinese manufacturer specializing in solar charge controllers, off-grid inverters, and inverter-chargers for solar power systems. Founded in 2007, the company has grown to serve customers globally through a network of over 120 distribution partners. Epever is not a...

Founded
2007
Headquarters
Beijing, China
Employees
100-500
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 Epever JA Solar
Catalog & Power
Panel Models 0 504+504
Max Power 0 W 740 W+740 W
Avg Power 0 W 456 W+456 W
Efficiency
Max Efficiency - 24.80%
Avg Efficiency - 21.13%
Reliability & Warranty
Avg Temp Coefficient - -0.322%/°C
Bifacial Share 0 (0%) 238 (47%)+47 pp
Avg Warranty - 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

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

Epever cell technology
Share of their models by cell architecture
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
Epever all models
No panels from this manufacturer are in the database yet.
05

Written summary

Checking cache...

Epever, the brand of Beijing Epsolar Technology Co., Ltd., is a Chinese company founded in 2007 and headquartered in Beijing. It specializes in solar power electronics - specifically MPPT solar charge controllers, off-grid and hybrid inverters, and energy storage systems. A critical distinction must be made upfront: Epever is not a solar panel (PV module) manufacturer; it produces balance-of-system (BOS) components and solar accessories. The company holds ISO9001, ISO14001, and ISO45001 certifications, and its products carry CE, RoHS, FCC, and ETL marks. It works with over 120 distribution partners globally, primarily serving the off-grid and DIY solar segments. JA Solar (JA Solar Technology Co., Ltd.) was founded in 2005 in Hebei Province, China, and is now headquartered in Beijing. It consistently ranks among the world's largest solar module manufacturers, holding Tier 1 status from both Bloomberg NEF and S&P Global Commodity Insights. The company reported manufacturing capacity exceeding 100 GW and cumulative global module shipments surpassing 200 GW as of end-2023. In terms of institutional footprint, JA Solar operates on an entirely different scale.

Epever's product range targets off-grid residential systems, mobile or remote installations, and backup power setups where a quality charge controller or inverter is the critical component. Its products complement PV installations but do not constitute the panels themselves. JA Solar, by contrast, supplies PV modules across the full spectrum of applications - residential rooftop installs, commercial and industrial (C&I) projects, and large-scale utility-scale ground-mount plants. Its DeepBlue 4.0 Pro and DeepBlue 5.0 series are based on n-type TOPCon cell technology, with the DeepBlue 5.0 reaching module efficiencies above 24%. JA Solar maintains offices and distribution networks across Europe, including Poland.

A direct comparison of these two brands as competing solar panel manufacturers is not meaningful - Epever does not make PV modules. For any buyer selecting solar panels, JA Solar is the relevant choice here, offering a well-documented Tier 1 track record, broad product range, and established European presence. Epever is a separate category of supplier - relevant when sourcing charge controllers or off-grid inverters, not when sourcing panels.

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 333 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.