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Solar-Fabrik S4-DG400-96APV
Solar-Fabrik Brand review

S4-DG400-96APV

400 Wp TOPCon Bifacial
ComparePV verdict

Middle of its segment, modest efficiency

Rank 13,120 of 14,005
Compare panels Datasheet PDF
Power (Wp)
400
Weak · bottom 1%
Efficiency (%)
15.48
Weak · bottom 1%
Density (Wp/m²)
154.8
Weak · bottom 1%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
31.5
Weak · 9.5 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The Solar-Fabrik Mono S4 Halfcut series | Transparency Project are specialized photovoltaic modules designed specifically for agrivoltaics - the innovative combination of solar energy production with agricultural cultivation on the same land area. A key distinguishing feature of this series is a partial transparency of 33% or 37%, which provides an optimal balance between shading and access to sunlight for crops, without negatively impacting yields. Thanks to the double-glass construction and half-cut cell technology, the modules offer increased reliability and mechanical resistance in challenging field conditions. Partial shading of crops reduces water evaporation from the soil, reducing the plants' water needs and improving irrigation efficiency. At the same time, the design protects crops from extreme weather conditions - hail, intense sunlight, and heavy rain. The series has fire protection class A and TÜV-certified mechanical strength of up to 8,100 Pa with hail resistance class 3-4. This solution is dedicated to agricultural-energy farms that want to simultaneously generate renewable energy and conduct productive cultivation - without sacrificing valuable land area.

Ranking

1,218 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 15.48% 22.00% Weak · bottom 1% 13,723
Power density 154.8 220.2 Weak · bottom 1% 13,707
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 78.8 51.4 Weak · bottom 1% 13,703
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Agrivoltaic and shaded-installations.

Not ideal for

Tight roof space, roofs where every square metre has to count and weight-limited structures.

Watch-outs
15.48% module efficiency

Bottom 1% of the TOPCon 400-450 W segment, against a median of 22.00%. Ranked 13,723rd in the whole database.

154.8 watts per square metre

Bottom 1% of the TOPCon 400-450 W segment, against a median of 220.2. Ranked 13,707th in the whole database.

78.8 kg per kWp

Bottom 1% of the TOPCon 400-450 W segment, against a median of 51.4. Ranked 13,703rd in the whole database.

Notes from the database
  • At 15.5% efficiency, this panel is 6.5pp below the TOPCon 400-450W median of 22.0%
  • 154.8 W/m² power density is 65.4 W/m² below TOPCon 400-450W median (220.2 W/m²) - requires larger installation area
  • At -0.29%/°C, hot weather performance is typical for TOPCon 400-450W panels
  • At 31.5 kg (9.5 kg above TOPCon 400-450W median of 22.0 kg), requires checking roof load capacity
  • #13723 for efficiency, #2165 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 400 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 15.48 % Weak Segment median 22.00%
Vmpp · Impp 29.88 V · 13.38 A Operating point at max power
Voc · Isc 35.56 V · 14.11 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2278×1134×30 mm · 2.58 m² of roof
Weight 31.5 kg Weak Weak · 9.5 kg above median
Cells 96 · TOPCon Monocrystalline
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.048 %/°C
NOCT 43 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 350 W guaranteed

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.290 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Solar-Fabrik S4-DG400-96APV 400 W 15.48% -0.290 31.5 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg Cooler, lighter, +7.6 pp
JST-EDMH-(445-465)W-TD (450W class) 450 W 23.05% -0.300 20.5 kg +50 W, lighter, +7.6 pp
QNN182-HG450-54 450 W 23.04% -0.290 24.0 kg +50 W, lighter, +7.6 pp
HY440-N108BDD 450 W 23.04% -0.300 23.5 kg +50 W, lighter, +7.6 pp
NLBK-27-450 450 W 23.04% -0.300 22.9 kg +50 W, lighter, +7.6 pp
RS41-450NBG-E3 450 W 23.04% -0.290 24.5 kg +50 W, lighter, +7.6 pp
S4-DG390-96APV 390 W 15.10% -0.290 31.5 kg -10 W, -0.4 pp
S4-DG395-96APV 395 W 15.29% -0.290 31.5 kg Very close match
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +250 W, lighter, +9.7 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +245 W, lighter, +9.5 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +240 W, lighter, +9.3 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +235 W, lighter, +9.1 pp
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg +230 W, cooler, +8.9 pp

Found 2326 panels of the same or similar size to this one, within ±10 mm. See them here Found 2368 panels of the same or similar size to this one, within ±25 mm. See them here Found 2382 panels of the same or similar size to this one, within ±50 mm. See them here Found 2547 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What transparency level do Solar-Fabrik Mono S4 Halfcut Transparency Project panels offer, and what does it mean for crops?
The Mono S4 Halfcut Transparency Project series is available in 33% or 37% transparency variants. This means that fraction of sunlight passes directly through the module to plants growing below. The agrivoltaic installation therefore does not cause excessive shading — crops receive enough light for photosynthesis while the panel simultaneously generates electricity.
What warranty does Solar-Fabrik provide on the Mono S4 Halfcut Transparency Project series?
Solar-Fabrik provides a 15-year product warranty and a 30-year power output warranty on this series. The power warranty guarantees that over three decades the panel will maintain the minimum efficiency level specified in the datasheet — which is especially relevant for long-term agrivoltaic investments where modules operate through entire growing seasons.
Is the Solar-Fabrik Mono S4 Halfcut Transparency Project bifacial, and does that make sense in an agrivoltaic setup?
Yes, the series features a bifacial glass-glass construction. In agrivoltaic conditions the rear side of the module can capture diffuse and reflected light from the soil or vegetation, boosting overall energy yield. The glass-glass design also provides greater mechanical strength and long-term weatherproofing — critical for multi-year outdoor field exposure.
How does the Solar-Fabrik Mono S4 Halfcut Transparency Project handle hail and high wind loads in open-field installations?
The module holds TÜV-certified mechanical resistance up to 8,100 Pa, covering extreme snow and wind loads. Hail resistance is rated at class 3–4, meaning the module withstands ice ball impacts exceeding 35 mm in diameter. These are especially important specifications for field installations where panels are exposed to severe weather events.
Does TOPCon cell technology in the Mono S4 Halfcut Transparency Project deliver higher efficiency than older PERC modules?
Yes. TOPCon (Tunnel Oxide Passivated Contact) cells achieve higher efficiencies than standard PERC cells due to improved surface passivation and lower recombination losses. In practice this translates to more kilowatt-hours from the same roof or ground area. The half-cut cell layout further reduces resistive losses and improves module performance under partial shading.
Are Solar-Fabrik Mono S4 Halfcut Transparency Project panels limited to agrivoltaic farms, or can they be used in standard ground-mount installations?
The partial transparency and glass-glass construction were primarily engineered for agrivoltaic applications, but the modules are fully suitable for any ground-mount installation. Fire protection class A and high mechanical strength make them a reliable choice wherever longevity and durability are priorities — including commercial PV farms on non-agricultural land.
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