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

# Bisol vs ARTsolar

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


## The two companies


| Attribute | Bisol | ARTsolar |
| --- | --- | --- |
| Country | Slovenia | South Africa |
| Headquarters | Prebold | Durban |
| Founded | 2004 | 2010 |
| Employees | 200-500 |  |
| Annual capacity | \<1 GW/year |  |
| Tier 1 | no | no |
| Listed |  |  |
| Website | [https://www.bisol.com](https://www.bisol.com) | [https://www.artsolar.co.za](https://www.artsolar.co.za) |

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...


## Catalog & Power


| Measure | Bisol | ARTsolar | 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 | ARTsolar | Margin |
| --- | --- | --- | --- |
| Max Efficiency | 23.50% | - |  |
| Avg Efficiency | 21.75% | - |  |


## Reliability & Warranty


| Measure | Bisol | ARTsolar | 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 | ARTsolar |
| --- | --- | --- |
| \<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 | ARTsolar |
| --- | --- | --- |
| \<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 | ARTsolar |
| --- | --- | --- |
| 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 solar module manufacturer headquartered in Prebold, Slovenia, and is widely recognized as one of the few genuinely European-made panel brands, producing its entire output at a domestic facility rather than contracting to Asian factories. The company reports a production capacity of approximately 750 MW per year, with plans to expand significantly through a new plant in Murska Sobota expected to come online around 2027. Bisol is not on the BloombergNEF Tier 1 list - a status the company itself disputes, arguing that the list measures volume financing rather than product quality - though its modules carry independent certifications from TÜV, KIWA PVEL, and AIT. ARTsolar, trading as African Renewable Technologies, is a Durban-based brand founded in 2010 and marketed as South Africa's only locally owned solar panel producer, targeting both residential and commercial buyers across southern Africa. The company's institutional footprint, however, has been significantly clouded by ongoing legal disputes: a 2025 High Court case brought by ARTsolar itself against government entities and independent power producers revealed allegations that the company imported roughly 99% of its panels from China between 2019 and 2023, raising serious questions about its local-manufacturing claims. On institutional credibility and supply-chain transparency, Bisol holds the stronger position.

In terms of product families and technology, Bisol's confirmed lineup includes TOPCon modules, and the brand is primarily positioned at quality-conscious residential and commercial rooftop buyers in Europe who are willing to pay a premium for verified European provenance and unusually tight performance sorting - a system the company says eliminates the majority of mismatch losses in multi-panel arrays. Bisol also offers a claimed 25-year 100% output power guarantee, which is atypical in the industry. ARTsolar's catalog includes monocrystalline PERC and TOPCon-based modules in the 360 W to 500 W range, aimed at both off-grid residential installs and grid-tied commercial rooftops across the South African and sub-Saharan market. The brand's value proposition leans on local availability, support infrastructure, and qualifying buyers for South African local-content incentive programs, though the validity of those local-content claims is now subject to court scrutiny.

For a buyer outside southern Africa, Bisol is the more defensible default choice given its fully traceable European manufacturing, third-party quality testing, and long-standing profitability. For a buyer based in South Africa, ARTsolar's supply chain and legal controversies warrant due diligence before committing to a large installation - the outcome of the ongoing High Court proceedings could materially affect the company's ability to fulfill warranties and continue operations.

\---LINKS---

\- 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 - BloombergNEF Tier 1 list not a quality measure \| article

\- https://groundup.org.za/article/local-manufacturer-actually-imports-99-its-product-court-told/ \| Local solar panel manufacturer imports 99% of its product, court told \| article

\- https://oxpeckers.org/2025/11/solar-court-case/ \| Court case tackles not-so-proudly-South African solar power \| article

\- https://theconversation.com/whats-stopping-sunny-south-africas-solar-industry-court-case-sheds-light-on-the-wider-problem-273783 \| What's stopping South Africa's solar industry - court case sheds light \| article

Sources:

\- \[Bisol to triple production capacity with new Slovenian plant\](https://balkangreenenergynews.com/solar-module-maker-bisol-to-triple-production-capacity-with-new-slovenian-plant/)

\- \[Bisol Position Statement on BloombergNEF Tier 1 List\](https://www.bisol.com/post/bisol-position-statement-bloombergnef-tier-1-list-not-a-measure-of-pv-module-quality)

\- \[Local solar panel manufacturer imports 99% of its product, court told - GroundUp\](https://groundup.org.za/article/local-manufacturer-actually-imports-99-its-product-court-told/)

\- \[Court case tackles not-so-proudly-South African solar power - Oxpeckers\](https://oxpeckers.org/2025/11/solar-court-case/)

\- \[What's stopping South Africa's solar industry - The Conversation\](https://theconversation.com/whats-stopping-sunny-south-africas-solar-industry-court-case-sheds-light-on-the-wider-problem-273783)

Written by claude-sonnet from the figures above.


## Other comparisons

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


---

Source: https://comparepv.com/bisol-vs-artsolar

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