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Manufacturer review

Solar-Fabrik panels, read off the datasheets

Solar Fabrik is a German family-owned manufacturer of photovoltaic modules, specializing in high-quality glass-glass panels with N-TYPE/TOPCon technology and a 30-year product and performance warranty. Originally founded in Freiburg in 1996 as Solar-Fabrik AG, the brand was revived in 2016 after insolvency...

Everything below is computed from those 43 datasheets: no score out of ten, no ranking of brands against each other, and nothing a manufacturer can pay to change. Where Solar-Fabrik does not publish a figure, it is left out of the average rather than assumed.

Panels
43
models in the database
Average efficiency
22.0%
across the catalogue
Best efficiency
24.3%
their strongest module
Power range
290-625 Wp
smallest to largest
Bifacial share
100%
43 dual-sided models
Average warranty
30 years
guaranteed output term
01

The top of the range

The leaders of Solar-Fabrik'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 Mono S4 Quartercut Premium DE Series 485W Monocrystalline bifacial 485 Wp 24.3% 2 Mono S4 Quartercut Premium DE Series 480W Monocrystalline bifacial 480 Wp 24.0% 3 Mono S4 Halfcut BC White 490 Monocrystalline bifacial 490 Wp 24.0% 4 Mono S4 Halfcut BC Series White 490W Monocrystalline bifacial 490 Wp 24.0% 5 Mono S4 Halfcut BC Series White 485W Monocrystalline bifacial 485 Wp 23.8%
Sort the whole catalogue by efficiency
Highest power nameplate output
1 S4-DG625-132TMax Monocrystalline bifacial 23.1% 625 Wp 2 S4-DG620-132TMax Monocrystalline bifacial 22.9% 620 Wp 3 Mono S4 Halfcut BC White 490 Monocrystalline bifacial 24.0% 490 Wp 4 Mono S4 Halfcut BC Series White 490W Monocrystalline bifacial 24.0% 490 Wp 5 Mono S4 Halfcut BC White 485 Monocrystalline bifacial 23.8% 485 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 Mono S4 Halfcut Trend White 460W Monocrystalline bifacial 460 Wp 23.0% 2 S4-DG460-96TMax (White) Monocrystalline bifacial 460 Wp 23.0% 3 Mono S4 Halfcut Trend Full Black 460W Monocrystalline bifacial 460 Wp 23.0% 4 S4-DG460-96TMax (Full Black) Monocrystalline bifacial 460 Wp 23.0% 5 Mono S4 Halfcut Trend White 455W Monocrystalline bifacial 455 Wp 22.8%
For a commercial array 500 Wp and up
1 S4-DG625-132TMax Monocrystalline bifacial 625 Wp 23.1% 2 S4-DG620-132TMax Monocrystalline bifacial 620 Wp 22.9%
For a ground mount dual-sided
1 Mono S4 Quartercut Premium DE Series 485W Monocrystalline bifacial 485 Wp 24.3% 2 Mono S4 Quartercut Premium DE Series 480W Monocrystalline bifacial 480 Wp 24.0% 3 Mono S4 Halfcut BC White 490 Monocrystalline bifacial 490 Wp 24.0% 4 Mono S4 Halfcut BC Series White 490W Monocrystalline bifacial 490 Wp 24.0% 5 Mono S4 Halfcut BC Series White 485W Monocrystalline bifacial 485 Wp 23.8%
03

What the catalogue is made of

Cell technology across the market

Shares are of the 43 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
TOPCon 62.8% 27 Back Contact 30.2% 13 N-type 4.7% 2 PERC 2.3% 1
TOPCon accounts for 62.8% of the catalogue - 27 of 43 modules.
Efficiency spread share of the catalogue
<20% 11.6% 5 20-21% 7.0% 3 21-22% 7.0% 3 22-23% 25.6% 11 23%+ 48.8% 21
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 24.3%)
  • Strong bifacial lineup - 100% of portfolio supports dual-sided generation
  • Strong warranty coverage averaging 30 years
  • High-power panels available (up to 625W) for commercial applications
  • Established manufacturer with 30+ years of experience
  • Large-scale production capacity of <1 GW
05

In short

Solar-Fabrik: Solar-Fabrik is an industry leader in efficiency, offering 43 panels suitable for both residential and commercial buyers. With an average efficiency of 22.0% and top models reaching 24.3%, their panels deliver competitive performance.
Common questions
Is Solar-Fabrik a good solar panel manufacturer?
Solar-Fabrik offers 43 solar panel models with an average efficiency of 22.0%. Check their full panel lineup on ComparePV to find the best model for your needs.
What types of solar panels does Solar-Fabrik make?
Solar-Fabrik manufactures panels ranging from 290W to 625W, covering both residential and commercial applications. Their portfolio includes TOPCon (63%), Back Contact (30%), N-type (5%) cell technologies.
How efficient are Solar-Fabrik solar panels?
Solar-Fabrik panels have an average efficiency of 22.0%, with their most efficient model reaching 24.3%. This puts them among the industry leaders in the current market.
Does Solar-Fabrik make bifacial solar panels?
Yes, Solar-Fabrik offers 43 bifacial panels, representing 100% of their portfolio. Bifacial panels can generate additional energy from the rear side, making them ideal for ground-mounted systems.
What warranty does Solar-Fabrik offer on their solar panels?
Solar-Fabrik 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 Solar-Fabrik panels good for residential use?
Solar-Fabrik 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 Solar-Fabrik use TOPCon technology?
Yes, Solar-Fabrik 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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