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A.B. Energy vs Longi Solar - solar panel manufacturer comparison

A.B. Energy
Germany Founded 1996
Read the A.B. Energy 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 0 models). Longi Solar leans bifacial (40% 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
0 255
Highest power
0 Wp 670 Wp
Best efficiency
- 25.0%
Average efficiency
- 22.6%
Bifacial share
0% 40%
Average warranty
- 28 yrs
01

The two companies

Company facts, not datasheet figures
A.B. Energy

ABO Energy is a renewable energy company that develops and constructs renewable energy projects, focusing on wind, solar, and storage facilities. They offer turnkey solutions and have connected several gigawatts of nominal output to the grid. The company is active internationally and is committed to driving the energy...

Founded
1996
Headquarters
Wiesbaden, Germany
Employees
1,400
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 A.B. Energy Longi Solar
Catalog & Power
Panel Models 0 255+255
Max Power 0 W 670 W+670 W
Avg Power 0 W 544 W+544 W
Efficiency
Max Efficiency - 25.00%
Avg Efficiency - 22.65%
Reliability & Warranty
Avg Temp Coefficient - -0.291%/°C
Bifacial Share 0 (0%) 101 (40%)+40 pp
Avg Warranty - 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)

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

Written summary

Checking cache...

LONGi Solar is a Chinese manufacturer headquartered in Xi'an, Shaanxi Province, founded in 2000 and now one of the largest solar producers in the world. The company has been consistently ranked as a Tier 1 module manufacturer by BloombergNEF - most recently in Q1 2026 - and shipped more than 63 GW of solar cells and modules in the first nine months of 2025 alone, representing roughly 24% year-on-year growth. A.B. Energy, by contrast, is an Italian company that operates primarily as a distributor and reseller of energy efficiency and photovoltaic products, with roots in the electrical and electronics sector. No credible industry database or independent review source - including BloombergNEF's Tier 1 lists, ENF Solar, or pv-tech.org - classifies A.B. Energy as a module manufacturer in its own right. The institutional footprint between the two is not comparable: LONGi is a globally dominant vertically integrated producer; A.B. Energy is a regional intermediary.

LONGi's product catalog centers on its Hi-MO series, which spans residential, commercial, and utility-scale ground-mount applications. The company's dominant cell technology has shifted away from PERC toward its proprietary back-contact architecture - HPBC 2.0 for mainstream deployments and the newly launched HIBC for premium, high-efficiency applications. TUV Rheinland has certified HPBC 2.0 modules for superior anti-shading performance, and at SNEC 2025 LONGi officially unveiled HIBC mass-production modules with cell efficiencies above 27%. A.B. Energy, as a distributor, does not manufacture or certify its own cell technology; the brands and panels it resells vary and are not independently documented in major review outlets.

For any buyer evaluating these two side by side in 2025, LONGi is the clear default choice for projects of almost any scale - residential rooftops, commercial installations, or utility farms - where bankability, long-term warranty support, and documented technology performance matter. A.B. Energy may serve a niche role as a local sourcing channel in Italy, but it cannot be compared to LONGi as a manufacturer peer.

Generated by Claude Sonnet · 2026-06-07

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 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.