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Leapton vs Longi Solar - solar panel manufacturer comparison

Leapton
Japan Founded 2012 Tier 1
Read the Leapton review
VS
Longi Solar
China Founded 2000 Tier 1
Read the Longi Solar review
At a glance

Longi Solar has the broader catalog (255 vs 119 models). Longi Solar leads on peak efficiency at 25.00%.

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
119 255
Highest power
720 Wp 670 Wp
Best efficiency
23.3% 25.0%
Average efficiency
22.2% 22.6%
Bifacial share
49% 40%
Average warranty
29 yrs 28 yrs
01

The two companies

Company facts, not datasheet figures
Leapton

Leapton Energy, headquartered in Japan, is a global leader in the solar PV industry, specializing in Tier-1 solar modules, battery energy storage systems (BESS), and inverters. With over 10 years of experience, Leapton Energy's products are now available in more than 70 countries worldwide.

Founded
2012
Headquarters
Kobe, Japan
Annual capacity
3+ GW/year
Tier 1 bankable
Yes
Longi Solar

LONGi Green Energy Technology Co., Ltd. is a world-leading solar technology company that manufactures monocrystalline silicon wafers and modules. The company is committed to providing high-efficiency and reliable clean energy solutions for large-scale power plants, various industries, and households. LONGi aims to be...

Founded
2000
Headquarters
Xi'an, Shaanxi, China
Annual capacity
85-90 GW/year
Employees
37,853
Tier 1 bankable
Yes
02

Catalogue against catalogue

Averages over every model in the database
Metric Leapton Longi Solar
Catalog & Power
Panel Models 119 255+136
Max Power 720 W+50 W 670 W
Avg Power 546 W+3 W 544 W
Efficiency
Max Efficiency 23.32% 25.00%+1.68 pp
Avg Efficiency 22.18% 22.65%+0.47 pp
Reliability & Warranty
Avg Temp Coefficient -0.307%/°C -0.291%/°C+0.016
Bifacial Share 58 (49%)+9 pp 101 (40%)
Avg Warranty 29.5 yrs+1.6 yr 27.8 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

Longi Solar skews to higher efficiency: 43% of lineup is 23%+

Power spread
Share of each catalogue in every power band

Longi Solar offers more 600W+ panels (38% of lineup)

Leapton cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>TOPCon</strong> (88%)

Longi Solar cell technology
Share of their models by cell architecture

Dominant cell tech: <strong>N-type</strong> (42%)

04

The flagships

Highest-power models from each brand
05

Written summary

Checking cache...

Leapton is a manufacturer with Japanese corporate roots - Leapton Energy was founded in Kobe, Japan in 2012 - but all module production takes place in Changshu, Jiangsu, China, where the factory was established in 2017. The company grew rapidly, reaching approximately 3 GW of annual production capacity by late 2024, and has secured BloombergNEF Tier 1 bankability status, making it eligible for institutional project financing. LONGi Solar, headquartered in Xi'an, China, operates at an entirely different scale: the company's HPBC 2.0 cell capacity alone exceeded 46 GW, and LONGi plans to ship approximately 80 GW of modules across 2026. LONGi has maintained consistent BloombergNEF Tier 1 status and, as of early 2026, also debuted on the BNEF Tier 1 energy storage list. By any measure of institutional footprint - financing access, supply security, and R&D investment - LONGi occupies a substantially larger and more established global position.

Leapton's current portfolio centers on N-type TOPCon cell technology, with bifacial models ranging from 440 W to 585 W. The company earned a Top Performer designation in Kiwa PVEL's 2025 PV Module Reliability Scorecard, which provides independent third-party validation beyond marketing materials. Its panels target residential rooftop and commercial-and-industrial (C&I) segments primarily, and a 30-year power warranty applies to bifacial and N-type products. LONGi structures its portfolio around its proprietary HPBC 2.0 back-contact cell technology. For residential rooftop use, the Hi-MO X10 EcoLife series delivers up to 510 W at up to 25% module efficiency and received a 2025 Smarter E Award. For utility-scale ground-mounted projects, the Hi-MO 9 series reaches up to 670 W output at 24.8% efficiency, also backed by a 30-year power warranty. LONGi additionally holds world cell efficiency records, including 27.81% for its HIBC cell and 34.85% for a silicon-perovskite tandem structure.

For buyers focused on residential or mid-size commercial installations, Leapton offers a credible Tier 1-rated option with competitive N-type TOPCon technology and PVEL Top Performer validation - well suited to cost-sensitive projects that still require documented bankability. LONGi is the stronger default for buyers where supply-chain security, leading-edge cell technology, and long-term institutional confidence carry the most weight, particularly in larger C&I or utility-scale projects where panel performance data and manufacturer stability are heavily scrutinized. The two brands are not interchangeable in practice: LONGi's scale and R&D depth give it a clear technology and institutional advantage, while Leapton represents a legitimate mid-tier alternative for buyers who prioritize value without sacrificing Tier 1 credentials.

Generated by Claude Sonnet · 2026-05-20

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 8 Leapton offers · See 174 Longi 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.