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Bisol vs A.B. Energy - solar panel manufacturer comparison

Bisol
Slovenia Founded 2004
Read the Bisol review
VS
A.B. Energy
Germany Founded 1996
Read the A.B. Energy review
At a glance

Bisol has the broader catalog (12 vs 0 models).

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
12 0
Highest power
580 Wp 0 Wp
Best efficiency
23.5% -
Average efficiency
21.8% -
Bifacial share
8% 0%
Average warranty
30 yrs -
01

The two companies

Company facts, not datasheet figures
Bisol

BISOL Group is a European manufacturer of high-quality photovoltaic modules headquartered in Prebold, Slovenia. Founded in 2004, it is considered Europe's leading authentic solar module producer with a production capacity of 750 MW and products distributed in over 120 countries. The company operates debt-free and has...

Founded
2004
Headquarters
Prebold, Slovenia
Annual capacity
<1 GW/year
Employees
200-500
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
02

Catalogue against catalogue

Averages over every model in the database
Metric Bisol A.B. Energy
Catalog & Power
Panel Models 12+12 0
Max Power 580 W+580 W 0 W
Avg Power 475 W+475 W 0 W
Efficiency
Max Efficiency 23.50% -
Avg Efficiency 21.75% -
Reliability & Warranty
Avg Temp Coefficient -0.291%/°C -
Bifacial Share 1 (8%)+8 pp 0 (0%)
Avg Warranty 29.6 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

Bisol skews to higher efficiency: 33% of lineup is 23%+

Power spread
Share of each catalogue in every power band
Bisol cell technology
Share of their models by cell architecture

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

A.B. Energy cell technology
Share of their models by cell architecture
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...

Bisol is a Slovenian photovoltaic module manufacturer headquartered in Prebold, Slovenia, with a documented production capacity of approximately 750 MW per year at its purpose-built factory; the company has announced plans to triple that output with a second plant in Murska Sobota scheduled to open by late 2027. Bisol has been profitable continuously since founding and carries no bank debt, giving it a degree of financial independence unusual for a mid-scale European manufacturer. It is not listed on the BloombergNEF Tier 1 bankability register - a status it has publicly contested, arguing the list measures financing volume rather than product quality - though its modules carry independent certifications from TÜV, KIWA PVEL, E3, and AIT. A.B. Energy srls is an Italian company that operates as a regional distributor and energy-efficiency solutions provider, not a module manufacturer in its own right. It resells panels from established global brands and carries inverter lines from well-known suppliers. In terms of institutional footprint and manufacturing depth, Bisol is the stronger entity by a wide margin.

Bisol's product lineup is positioned squarely in the premium segment for residential and light-commercial rooftops in Europe. The company moved to G12R TOPCon cell technology in early 2025 with its BGO series, designed partly to satisfy European-origin sourcing requirements gaining traction under the EU's FER-X framework. Its flagship Supreme series targets high-aesthetic installations and includes options for custom frame engraving. A claimed field failure rate of 0.01% and a 25-year full-output-power guarantee support a durability-first narrative. A.B. Energy, as a distributor, does not develop its own cell technology or module architecture; the product offering depends entirely on what its manufacturing partners - including names such as JA Solar, Trina Solar, and LONGi - bring to market.

For a buyer seeking a directly comparable head-to-head decision, these two entities are not equivalent options. Bisol is a manufacturer with traceable production, independent quality certifications, and a defined warranty chain; A.B. Energy is a regional Italian intermediary whose value lies in local service and access to multiple brands. A buyer in Europe who prioritizes proven European-made modules with strong durability credentials would lean toward Bisol; a buyer in Italy who needs flexible brand selection, local support, and competitive pricing across multiple product tiers would find A.B. Energy more relevant as a procurement channel rather than a comparable manufacturer.

Generated by Claude Sonnet · 2026-06-09

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 12 Bisol 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.