---
title: "Bisol vs A.B. Energy - Brand Comparison | ComparePV"
description: "Compare Bisol vs A.B. Energy solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background."
source: "https://comparepv.com/bisol-vs-a-b-energy"
---

# Bisol vs A.B. Energy

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


## The two companies


| Attribute | Bisol | A.B. Energy |
| --- | --- | --- |
| Country | Slovenia | Germany |
| Headquarters | Prebold | Wiesbaden |
| Founded | 2004 | 1996 |
| Employees | 200-500 | 1,400 |
| Annual capacity | \<1 GW/year |  |
| Tier 1 | no |  |
| Listed |  | Xetra, Frankfurt Stock Exchange: AB9 |
| Website | [https://www.bisol.com](https://www.bisol.com) | [https://abo-energy.com](https://abo-energy.com) |

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...

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...


## Catalog & Power


| Measure | Bisol | A.B. Energy | Margin |
| --- | --- | --- | --- |
| Panel Models | 12 | 0 | +12 |
| Max Power | 580 W | 0 W | +580 W |
| Avg Power | 475 W | 0 W | +475 W |


## Efficiency


| Measure | Bisol | A.B. Energy | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 23.50% | - |  |
| Avg Efficiency | 21.75% | - |  |


## Reliability & Warranty


| Measure | Bisol | A.B. Energy | Margin |
| --- | --- | --- | --- |
| Avg Temp Coefficient | -0.291%/°C | - |  |
| Bifacial Share | 1 (8%) | 0 (0%) | +8 pp |
| Avg Warranty | 29.6 yrs | - |  |


## Efficiency distribution

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


| Efficiency band | Bisol | A.B. Energy |
| --- | --- | --- |
| \<20% | 2 (16.7%) | 0 |
| 20-21% | 1 (8.3%) | 0 |
| 22-23% | 5 (41.7%) | 0 |
| 23%+ | 4 (33.3%) | 0 |


## Power distribution


| Power band | Bisol | A.B. Energy |
| --- | --- | --- |
| \<400W | 2 (16.7%) | 0 |
| 400-499W | 4 (33.3%) | 0 |
| 500-599W | 6 (50.0%) | 0 |


## Cell technology

Dominant cell tech: **PERC** (58%)


| Technology | Bisol | A.B. Energy |
| --- | --- | --- |
| PERC | 7 (58.3%) | 0 |
| TOPCon | 5 (41.7%) | 0 |


## Top panels, Bisol


| # | Model | Power | Efficiency | Temp. coefficient | Technology |
| --- | --- | --- | --- | --- | --- |
| 1 | [BGO 580](https://comparepv.com/panel/bisol-bgo-580) | 580 | 23.5 | -0.290 | Monocrystalline |
| 2 | [BGO 570](https://comparepv.com/panel/bisol-bgo-570) | 570 | 23.1 | -0.290 | Monocrystalline |
| 3 | [BGO 560](https://comparepv.com/panel/bisol-bgo-560) | 560 | 22.7 | -0.290 | Monocrystalline |
| 4 | [BBO 520](https://comparepv.com/panel/bisol-bbo-520) | 520 | 23.2 | -0.290 | Monocrystalline |
| 5 | [BBO 510](https://comparepv.com/panel/bisol-bbo-510) | 510 | 22.8 | -0.290 | Monocrystalline |
| 6 | [BBO 500](https://comparepv.com/panel/bisol-bbo-500) | 500 | 22.3 | -0.290 | Monocrystalline |
| 7 | [BDO 460](https://comparepv.com/panel/bisol-bdo-460) | 460 | 23.0 | -0.290 | Monocrystalline |
| 8 | [BDO 450](https://comparepv.com/panel/bisol-bdo-450) | 450 | 22.5 | -0.290 | Monocrystalline |
| 9 | [BDO 440](https://comparepv.com/panel/bisol-bdo-440) | 440 | 22.0 | -0.290 | Monocrystalline |
| 10 | [BDO 410](https://comparepv.com/panel/bisol-bdo-410) | 410 | 20.5 | -0.290 | Monocrystalline |


## Summary

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.

\---LINKS---

\- https://www.bisol.com/post/bisol-highlights-2025-technology-partnerships-and-milestones \| BISOL Highlights 2025 - Technology, Partnerships and Milestones \| article

\- https://balkangreenenergynews.com/solar-module-maker-bisol-to-triple-production-capacity-with-new-slovenian-plant/ \| Bisol to triple production capacity with new Slovenian plant \| article

\- https://www.bisol.com/post/bisol-position-statement-bloombergnef-tier-1-list-not-a-measure-of-pv-module-quality \| BISOL position statement on BloombergNEF Tier 1 list \| article

\- https://www.solarfeeds.com/biz/bisol-group-d-o-o/ \| BISOL Group company overview - production capacity and Tier 1 status \| review

\- https://www.enfsolar.com/a-b-energy \| A.B. Energy srls - ENF Solar company profile \| article

Written by claude-sonnet from the figures above.


## Other comparisons

- [Bisol vs AE Solar](https://comparepv.com/bisol-vs-ae-solar)
- [AEET vs A.B. Energy](https://comparepv.com/aeet-vs-a-b-energy)
- [Bisol vs AIKO](https://comparepv.com/bisol-vs-aiko)
- [AKCOME vs A.B. Energy](https://comparepv.com/akcome-vs-a-b-energy)
- [Bisol vs ARTsolar](https://comparepv.com/bisol-vs-artsolar)
- [ASM vs A.B. Energy](https://comparepv.com/asm-vs-a-b-energy)


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Source: https://comparepv.com/bisol-vs-a-b-energy

Not in this file, on the page: the distributions above drawn as charts.