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JS Solar vs MY Solar - solar panel manufacturer comparison

JS Solar
China Founded 2011
Read the JS Solar review
VS
MY Solar
Headquarters not published
Read the MY Solar review
At a glance

MY Solar has the broader catalog (140 vs 137 models). MY Solar leads on peak efficiency at 23.82%. MY Solar leans bifacial (39% 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
137 140
Highest power
670 Wp 740 Wp
Best efficiency
22.4% 23.8%
Average efficiency
20.0% 19.9%
Bifacial share
9% 39%
Average warranty
25 yrs 27 yrs
01

The two companies

Company facts, not datasheet figures
JS Solar
Founded
2011
Headquarters
Jinhua, China
02

Catalogue against catalogue

Averages over every model in the database
Metric JS Solar MY Solar
Catalog & Power
Panel Models 137 140+3
Max Power 670 W 740 W+70 W
Avg Power 430 W+12 W 418 W
Efficiency
Max Efficiency 22.45% 23.82%+1.37 pp
Avg Efficiency 20.03%+0.16 pp 19.87%
Reliability & Warranty
Avg Temp Coefficient -0.335%/°C -0.333%/°C+0.002
Bifacial Share 12 (9%) 54 (39%)+30 pp
Avg Warranty 25.1 yrs 27.1 yrs+1.9 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

MY Solar skews to higher efficiency: 4% of lineup is 23%+

Power spread
Share of each catalogue in every power band

MY Solar offers more 600W+ panels (21% of lineup)

JS Solar cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>PERC</strong> (39%)

MY Solar cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>PERC</strong> (58%)

04

The flagships

Highest-power models from each brand
05

Written summary

Checking cache...

JS Solar is a Chinese photovoltaic manufacturer established in 2007 and headquartered in Wuxi City, Jiangsu Province. The company produces solar cells, modules, inverters, and mounting systems, with a catalog spanning residential and commercial wattage classes. Search results did not surface JS Solar on any BloombergNEF Tier 1 list, suggesting it operates as a smaller-scale supplier rather than a top-tier bankable manufacturer. MY Solar - appearing under the brand identity MY Solar Technology and related to the mypvtech.com domain - is also based in Wuxi and was founded around 2010, with roughly 80 percent of its output reportedly exported globally. Neither brand carries the institutional footprint of the dominant Chinese players such as Jinko, Trina, or JA Solar, making them broadly comparable in market standing.

JS Solar's confirmed product lines include PERC and TOPCon modules covering a wide power range from roughly 360 W to 580 W, suited to residential rooftops, small commercial installations, and mid-scale ground mounts. Efficiency across its catalog averages around 20 percent, with higher-end TOPCon models pushing toward the low-to-mid 22 percent range. MY Solar Technology has positioned its brand around HJT and shingled cell technologies, with HJT modules reaching outputs up to 720 W and claimed efficiencies of approximately 23.8 percent - numbers that, if independently verified, would place it in the premium efficiency tier. Shingled double-glass bifacial panels round out the MY Solar portfolio, targeting applications where rear-side gain and low degradation rates matter.

For a typical buyer in 2025, MY Solar's focus on HJT and shingled technology is technically differentiated, but limited third-party review coverage and the absence of confirmed Tier 1 bankability make project financing harder to secure. JS Solar's broader PERC and TOPCon catalog is more mainstream but similarly lacks bankability credentials. Buyers needing financed utility-scale projects should look to confirmed Tier 1 brands; for smaller self-funded or commercial installations where price and availability dominate, the two brands are broadly interchangeable.

Generated by Claude Sonnet · 2026-06-24

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.

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.