Skip to main content
Solarwatt Brand review

SOLARWATT Panel classic AM 2.0 black - 35 mm (400 Wp variant)

400 Wp PERC
ComparePV verdict

Strong in heat, no clear weak spot

Rank 11,685 of 14,005
Compare panels Datasheet PDF
Power (Wp)
400
Weak · bottom 9%
Efficiency (%)
20.70
Typical · median 20.60%
Density (Wp/m²)
206.5
Typical · median 206.2
Temp (%/°C)
-0.330
Strong · top 10%
Weight (kg)
19.7
Strong · 2.3 kg below median
Warranty (yrs)
25
Typical · median 25 yrs

The Solarwatt SOLARWATT Panel classic AM 2.0 black - 35 mm is a refined glass-foil type module, designed for stable energy production and aesthetic appeal. It is characterized by its full black appearance - a black frame and darkened elements that make it well-suited for modern roofs and facades, without the "gap" typical of many standard panels. The use of PERC monocrystalline cells supports high efficiency even in less ideal sunlight conditions, while the construction using tempered glass with an anti-reflective coating helps to minimize light reflection losses. In practice, it is a good choice for those who want to combine aesthetics with predictable energy yield. The series also solves the common problem of power loss in difficult conditions thanks to PID protection and long-term degradation tests. The module is suitable for roofs of single-family homes, small businesses, and projects where durable and solid construction and long-term reliability are important.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.70% 20.60% Typical 10,764
Power density 206.5 206.2 Typical 10,990
Temperature coefficient -0.330 -0.350 Strong · top 10% 8,545
Weight per kWp 49.2 53.0 Strong · top 11% 2,821
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

2 positive · 0 caution
Best for

Residential and commercial.

Strengths
-0.330 %/°C temperature coefficient

Top 10% of the PERC 400-450 W segment, against a median of -0.350.

49.2 kg per kWp

Top 11% of the PERC 400-450 W segment, against a median of 53.0.

Notes from the database
  • At 20.7% efficiency, this panel is on par with typical PERC 400-450W modules
  • At 206.5 W/m² power density, roof space requirements are typical for PERC 400-450W panels
  • Temperature coefficient of -0.33%/°C matches the PERC 400-450W median
  • 19.7 kg weight - 2.3 kg lighter than PERC 400-450W median (22.0 kg), reducing installation effort
  • In the top 77% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 400 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.70 % Typical Segment median 20.60%
Vmpp · Impp 30.70 V · 13.00 A Operating point at max power
Voc · Isc 37.10 V · 13.90 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1708×1134×35 mm · 1.94 m² of roof
Weight 19.7 kg Strong Strong · 2.3 kg below median
Cells 108 · PERC Monocrystalline
Coefficient Pmax -0.330 %/°C Strong top 10% of its segment
Coefficient Voc · Isc -0.250 · 0.050 %/°C
NOCT 44 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 84.8 % Equals 327 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
-0.330 %/°C against a segment median of -0.350
-

Alternatives

All Solarwatt panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Solarwatt SOLARWATT Panel classic AM 2.0 black - 35 mm (400 Wp variant) 400 W 20.70% -0.330 19.7 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg Cooler, +2.4 pp, +5 yr warranty
JST-EDMH-(445-465)W-TD (450W class) 450 W 23.05% -0.300 20.5 kg +50 W, +2.4 pp, +5 yr warranty
QNN182-HG450-54 450 W 23.04% -0.290 24.0 kg +50 W, +2.3 pp, +5 yr warranty
HY440-N108BDD 450 W 23.04% -0.300 23.5 kg +50 W, +2.3 pp, +5 yr warranty
NLBK-27-450 450 W 23.04% -0.300 22.9 kg +50 W, +2.3 pp, +5 yr warranty
RS41-450NBG-E3 450 W 23.04% -0.290 24.5 kg +50 W, +2.3 pp, +5 yr warranty
SOLARWATT Panel classic AM 2.0 pure - 35 mm (405 Wp variant) 405 W 20.90% -0.330 19.7 kg Very close match
SOLARWATT Panel classic AM 2.0 pure - 35 mm (410 Wp variant) 410 W 21.20% -0.330 19.7 kg +10 W, +0.5 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +110 W, cooler, +4.3 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +95 W, cooler, +4.1 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +105 W, cooler, +4.0 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +90 W, cooler, +3.8 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +100 W, cooler, +3.8 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +100 W, cooler, +3.8 pp

Found 26 panels of the same or similar size to this one, within ±10 mm. See them here Found 1816 panels of the same or similar size to this one, within ±25 mm. See them here Found 2029 panels of the same or similar size to this one, within ±50 mm. See them here Found 3944 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the SOLARWATT Panel classic AM 2.0 black - 35 mm series still available for purchase?
The SOLARWATT Panel classic AM 2.0 black - 35 mm series has been discontinued and is no longer available through official distribution channels. Remaining stock may still be found with select distributors or on the secondary market. If you need similar aesthetics and performance specs, ask your installer about current Solarwatt alternatives.
What warranty does the SOLARWATT Panel classic AM 2.0 black come with?
Solarwatt provides a 15-year product warranty and a 25-year power output warranty on the classic AM 2.0 black series. The power warranty guarantees the module retains a specified percentage of its rated 405 Wp output over 25 years. This is a strong warranty level for a glass-foil module manufactured by a German company.
Do the PERC cells in the SOLARWATT Panel classic AM 2.0 black improve output in overcast conditions?
Yes. The monocrystalline PERC cells in this series deliver better efficiency under diffuse light compared to standard mono cells, translating to slightly higher output on cloudy days and at low sun angles. This matters in climates with frequent overcast skies. The low Pmax temperature coefficient (-0.33%/K) also stabilizes energy production on hot summer days.
What does PID resistance mean in the SOLARWATT Panel classic AM 2.0 black and why does it matter?
PID (Potential Induced Degradation) is the gradual power loss that occurs when high system voltage combines with moisture to cause leakage currents through the cell. The classic AM 2.0 black carries a certified PID resistance rating per 2 PfG 2387, confirming it has been tested against this failure mode. This is especially important in high-voltage string systems, protecting against unexpected output degradation after several years of operation.
Are the SOLARWATT Panel classic AM 2.0 black - 35 mm modules compatible with standard pitched-roof mounting systems?
Yes. The modules measure 1,708 x 1,134 mm with a 35 mm frame profile and weigh approximately 19.5 kg, fitting within the specs of common pitched-roof racking systems such as Schletter, K2 Systems, and Esdec. MC4 connectors and 3 bypass diodes are compatible with mainstream inverters. Confirm with your installer that the chosen racking solution supports a 35 mm frame height.
Does the full-black design of the SOLARWATT classic AM 2.0 black negatively affect module operating temperature?
The black frame and black backsheet absorb slightly more heat than lighter alternatives, which can marginally reduce efficiency on very hot days. Solarwatt designed the module for exactly this operating environment, with a rated maximum temperature of +85°C. In practice, the annual energy yield difference is negligible, and for most homeowners the aesthetic advantage of a full-black panel fully offsets this minor thermal effect.
Add to compare