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Solarwatt Brand review

SOLARWATT Panel classic AM 2.0 black - 35 mm (395 Wp variant)

395 Wp PERC
ComparePV verdict

Light for its output, no clear weak spot

Rank 11,920 of 14,005
Compare panels Datasheet PDF
Power (Wp)
395
Strong · top 12%
Efficiency (%)
20.40
Strong · top 12%
Density (Wp/m²)
203.9
Strong · top 12%
Temp (%/°C)
-0.330
Strong · top 6%
Weight (kg)
19.7
Strong · 1.7 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

579 panels in the segment PERC 350-400 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.40% 19.90% Strong · top 12% 11,598
Power density 203.9 199.0 Strong · top 12% 11,615
Temperature coefficient -0.330 -0.350 Strong · top 6% 8,545
Weight per kWp 49.9 55.8 Strong · top 4% 3,252
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

3 positive · 0 caution
Best for

Residential and commercial.

Strengths
49.9 kg per kWp

Top 4% of the PERC 350-400 W segment, against a median of 55.8. Ranked 3,252nd in the whole database.

-0.330 %/°C temperature coefficient

Top 6% of the PERC 350-400 W segment, against a median of -0.350. Ranked 8,545th in the whole database.

203.9 watts per square metre

Top 12% of the PERC 350-400 W segment, against a median of 199.0.

Notes from the database
  • Efficiency of 20.4% is 0.9pp above the PERC 0-400W median (19.4%)
  • At 203.9 W/m² power density, this panel generates 9.5 W/m² more per unit area than PERC 0-400W median (194.4 W/m²)
  • Temperature coefficient of -0.33%/°C vs median -0.36%/°C means ~1% less power loss at 65°C
  • In the top 83% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 395 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.40 % Strong Segment median 19.90%
Vmpp · Impp 30.20 V · 13.10 A Operating point at max power
Voc · Isc 37.10 V · 13.50 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 · 1.7 kg below median
Cells 108 · PERC Monocrystalline
Coefficient Pmax -0.330 %/°C Strong top 6% 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 323 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 (395 Wp variant) 395 W 20.40% -0.330 19.7 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg Cooler, +2.7 pp, +5 yr warranty
GKA210M360W 360 W 23.00% - 16.2 kg -35 W, +2.6 pp, +5 yr warranty
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg Lighter, +2.6 pp, +5 yr warranty
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg Lighter, +2.6 pp, +5 yr warranty
GKA210M400W (1/4*4*40) 400 W 23.00% - 18.0 kg Lighter, +2.6 pp, +5 yr warranty
GKA210M380W (1/2*4*19) 380 W 23.00% - 17.1 kg Lighter, +2.6 pp, +5 yr warranty
JT440SYK(B) 440 W 22.90% -0.240 23.0 kg Cooler, +2.5 pp, +5 yr warranty
LX-440M/182-108+ 440 W 22.86% -0.300 21.5 kg +45 W, cooler, +2.5 pp
SOLARWATT Panel classic AM 2.0 pure - 35 mm (405 Wp variant) 405 W 20.90% -0.330 19.7 kg +10 W, +0.5 pp
SOLARWATT Panel classic AM 2.0 pure - 35 mm (410 Wp variant) 410 W 21.20% -0.330 19.7 kg +15 W, +0.8 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +115 W, cooler, +4.6 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +100 W, cooler, +4.4 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +110 W, cooler, +4.3 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +95 W, cooler, +4.1 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +105 W, cooler, +4.1 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.
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