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Manufacturer review

Bisol panels, read off the datasheets

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...

Everything below is computed from those 12 datasheets: no score out of ten, no ranking of brands against each other, and nothing a manufacturer can pay to change. Where Bisol does not publish a figure, it is left out of the average rather than assumed.

Panels
12
models in the database
Average efficiency
21.8%
across the catalogue
Best efficiency
23.5%
their strongest module
Power range
340-580 Wp
smallest to largest
Bifacial share
8%
1 dual-sided models
Average warranty
30 years
guaranteed output term
01

The top of the range

The leaders of Bisol's own catalogue on the two figures a specification sheet leads with. Neither is a verdict: the most efficient module in a range is rarely the one that suits a given roof.

Most efficient module efficiency
1 BGO 580 Monocrystalline 580 Wp 23.5% 2 BBO 520 Monocrystalline 520 Wp 23.2% 3 BGO 570 Monocrystalline 570 Wp 23.1% 4 BDO 460 Monocrystalline 460 Wp 23.0% 5 BBO 510 Monocrystalline 510 Wp 22.8%
Sort the whole catalogue by efficiency
Highest power nameplate output
1 BGO 580 Monocrystalline 23.5% 580 Wp 2 BGO 570 Monocrystalline 23.1% 570 Wp 3 BGO 560 Monocrystalline 22.7% 560 Wp 4 BBO 520 Monocrystalline 23.2% 520 Wp 5 BBO 510 Monocrystalline 22.8% 510 Wp
Sort the whole catalogue by power
02

By what the array is for

Three cuts of the same catalogue, each ordered by efficiency inside its band. An empty column means the brand does not build for that case.

For a house roof 380-460 Wp
1 BDO 460 Monocrystalline 460 Wp 23.0% 2 BDO 450 Monocrystalline 450 Wp 22.5% 3 BDO 440 Monocrystalline 440 Wp 22.0% 4 BDO 410 Monocrystalline 410 Wp 20.5%
For a commercial array 500 Wp and up
1 BGO 580 Monocrystalline 580 Wp 23.5% 2 BGO 570 Monocrystalline 570 Wp 23.1% 3 BGO 560 Monocrystalline 560 Wp 22.7% 4 BBO 520 Monocrystalline 520 Wp 23.2% 5 BBO 510 Monocrystalline 510 Wp 22.8%
For a ground mount dual-sided
1 BDO 340 Monocrystalline bifacial 340 Wp 17.4%
03

What the catalogue is made of

Cell technology across the market

Shares are of the 12 modules in the database, counted once each. A power ladder of one module counts as its rungs, which is why a large catalogue is not the same as a wide one.

Cell technology share of the catalogue
PERC 58.3% 7 TOPCon 41.7% 5
PERC accounts for 58.3% of the catalogue - 7 of 12 modules.
Efficiency spread share of the catalogue
<20% 16.7% 2 20-21% 8.3% 1 22-23% 41.7% 5 23%+ 33.3% 4
04

Strengths and gaps

Both lists are derived from the figures above rather than written about the brand. A gap here is a gap in what is published, which is not always a gap in what is built.

What this catalogue is good at
  • High-efficiency panels available (up to 23.5%)
  • Strong warranty coverage averaging 30 years
  • Established manufacturer with 22+ years of experience
  • Large-scale production capacity of <1 GW
Where it is thin
  • Limited bifacial panel options
05

In short

Bisol: Bisol is an industry leader in efficiency, offering 12 panels suitable for both residential and commercial buyers. With an average efficiency of 21.8% and top models reaching 23.5%, their panels deliver competitive performance.
Common questions
Is Bisol a good solar panel manufacturer?
Bisol offers 12 solar panel models with an average efficiency of 21.8%. Check their full panel lineup on ComparePV to find the best model for your needs.
What types of solar panels does Bisol make?
Bisol manufactures panels ranging from 340W to 580W, covering both residential and commercial applications. Their portfolio includes PERC (58%), TOPCon (42%) cell technologies.
How efficient are Bisol solar panels?
Bisol panels have an average efficiency of 21.8%, with their most efficient model reaching 23.5%. This puts them among the industry leaders in the current market.
Does Bisol make bifacial solar panels?
Yes, Bisol offers 1 bifacial panels, representing 8% of their portfolio. Bifacial panels can generate additional energy from the rear side, making them ideal for ground-mounted systems.
What warranty does Bisol offer on their solar panels?
Bisol panels come with an average performance warranty of 30 years. This warranty guarantees that the panels will maintain a specified level of power output over time, protecting your investment against degradation beyond normal levels.
Are Bisol panels good for residential use?
Bisol offers panels in the residential-friendly 380-460W range. For home installations, look for models with high efficiency and compact dimensions to maximize power from limited roof space. Browse their full lineup on ComparePV to filter by power range and specifications.
Does Bisol use TOPCon technology?
Yes, Bisol has adopted TOPCon (Tunnel Oxide Passivated Contact) cell technology in part of their portfolio. TOPCon cells offer higher efficiency and better temperature performance compared to older PERC technology, making them a strong choice for maximizing energy production.
06

Compared with

Build your own

A brand comparison weighs the two catalogues against each other - what each builds, at what efficiency, and how deep the range goes.

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