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Silfab SIL-370 NT mono PERC
Silfab Brand review

SIL-370 NT mono PERC

370 Wp PERC
ComparePV verdict

Warranty pick, weak in heat

Rank 11,845 of 14,005
Compare panels Datasheet PDF
Power (Wp)
370
Typical for its class
Efficiency (%)
18.70
Weak · bottom 10%
Density (Wp/m²)
186.9
Weak · bottom 10%
Temp (%/°C)
-0.380
Weak · bottom 7%
Weight (kg)
21.5
Typical · median 21.4 kg
Warranty (yrs)
30
Strong · top 13%

The Silfab Prime NTC series is designed to maximize roof space utilization while maintaining an elegant appearance. The use of N-type cells in TOPCon technology results in more stable module performance over a longer period and lower energy losses due to natural degradation compared to many standard designs. This is a real benefit for investors who prioritize predictable power generation and a better self-consumption balance.

In practice, Prime NTC stands out due to improved efficiency in lower sunlight conditions and better performance at higher temperatures, which helps maintain production even when conditions are not ideal. An additional advantage is increased tolerance to partial shading, which is important on roofs with chimneys, skylights, or antennas.

This series is particularly well-suited for single-family homes and prosumer installations, where every square meter counts, and a consistent aesthetic is important - the triple-black design complements modern roofing materials.

Ranking

579 panels in the segment PERC 350-400 W
Metric This panel Median Position in segment Overall rank
Module efficiency 18.70% 19.90% Weak · bottom 10% 13,058
Power density 186.9 199.0 Weak · bottom 10% 13,048
Temperature coefficient -0.380 -0.350 Weak · bottom 7% 13,397
Weight per kWp 58.1 55.8 Typical 11,565
Performance warranty 30 yrs 25 yrs Strong · top 13% 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

1 positive · 3 caution
Best for

Residential and shaded-installations.

Not ideal for

Hot climates, tight roof space and roofs where every square metre has to count.

Strengths
30 year performance warranty

Top 13% of the PERC 350-400 W segment, against a median of 25 yrs.

Watch-outs
-0.380 %/°C temperature coefficient

Bottom 7% of the PERC 350-400 W segment, against a median of -0.350. Ranked 13,397th in the whole database.

18.70% module efficiency

Bottom 10% of the PERC 350-400 W segment, against a median of 19.90%. Ranked 13,058th in the whole database.

186.9 watts per square metre

Bottom 10% of the PERC 350-400 W segment, against a median of 199.0. Ranked 13,048th in the whole database.

Notes from the database
  • Module efficiency of 18.7% is 0.8pp below average for PERC 0-400W panels (median: 19.4%)
  • At 186.9 W/m², this panel generates 7.5 W/m² less per unit area than PERC 0-400W median (194.4 W/m²)
  • -0.38%/°C temperature coefficient - 0.02pp worse than PERC 0-400W median (-0.36%/°C), expect higher hot weather losses
  • At 21.5 kg, weight matches the PERC 0-400W median
  • #13058 for efficiency, #13397 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 370 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 18.70 % Weak Segment median 19.90%
Vmpp · Impp 38.10 V · 9.70 A Operating point at max power
Voc · Isc 47.50 V · 9.90 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1992×994×38 mm · 1.98 m² of roof
Weight 21.5 kg Typical Typical · median 21.4 kg
Cells 72 · PERC Monocrystalline
Coefficient Pmax -0.380 %/°C Weak bottom 7% of its segment
Coefficient Voc · Isc -0.300 · 0.030 %/°C
NOCT 44 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 30 years Strong top 13% · median 25 yrs
End-of-warranty output 82.6 % Equals 306 W guaranteed
Degradation 2.90 → 0.50 % First year, then annual

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
-0.380 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Silfab SIL-370 NT mono PERC 370 W 18.70% -0.380 21.5 kg You are here
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +4.4 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +4.4 pp
GKA210M320W 320 W 23.00% - 16.2 kg -50 W, lighter, +4.3 pp
GKA210M340W 340 W 23.00% - 16.2 kg -30 W, lighter, +4.3 pp
GKA210M360W 360 W 23.00% - 16.2 kg -10 W, lighter, +4.3 pp
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg +10 W, lighter, +4.3 pp
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg +30 W, lighter, +4.3 pp
GKA210M400W (1/4*4*40) 400 W 23.00% - 18.0 kg +30 W, lighter, +4.3 pp
GKA210M380W (1/2*4*19) 380 W 23.00% - 17.1 kg +10 W, lighter, +4.3 pp
SPR-MAX3-400-COM 400 W 22.60% -0.270 19.0 kg Cooler, +3.9 pp, +10 yr warranty
SIL-380 NT 380 W 19.20% -0.380 21.5 kg +10 W, +0.5 pp
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg +105 W, cooler, +5.3 pp
SPR-MAX7-470 470 W 23.70% -0.270 21.1 kg +100 W, cooler, +5.0 pp
SPR-MAX7-465 465 W 23.50% -0.270 21.1 kg Cooler, +4.8 pp, +10 yr warranty
LEPV 132 ULTRA PREMIUM BLACK 440Wp (LEPV 440) 440 W 22.37% -0.290 21.0 kg +70 W, cooler, +3.7 pp
NS-420MH-80 420 W 22.28% -0.290 20.0 kg +50 W, cooler, +3.6 pp

Found 73 panels of the same or similar size to this one, within ±10 mm. See them here Found 264 panels of the same or similar size to this one, within ±25 mm. See them here Found 455 panels of the same or similar size to this one, within ±50 mm. See them here Found 531 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty does the Silfab Prime NTC come with?
The Silfab Prime NTC includes a 25-year product warranty and a 30-year linear power output warranty — one of the longest coverage packages in the premium residential segment. Silfab guarantees the module will retain at least 87.4% of its rated output after 30 years. This reflects the manufacturer's confidence in N-type TOPCon cell durability and is a strong argument when calculating long-term ROI.
How do TOPCon cells in the Silfab Prime NTC differ from standard PERC cells?
N-type TOPCon cells feature a thin tunnel oxide passivation layer that reduces charge carrier recombination. The result is higher efficiency (up to ~22.2%), a lower annual degradation rate (~0.4%/year vs. ~0.55% for typical PERC), and a superior temperature coefficient of -0.29%/°C. Over a 30-year system lifetime, this translates to meaningfully more energy yield compared to conventional P-type PERC modules.
Is the Silfab Prime NTC a good fit for rooftops with chimneys or dormers that cause partial shading?
Yes. The Prime NTC is built with 108 half-cut N-type cells, which significantly minimize the impact of partial shading on overall module output. The series is specifically designed for residential rooftop installations where chimneys, dormers, or antennas may create intermittent shading — a common scenario on single-family homes. Its shading tolerance is a key advantage over older P-type solutions.
How does the Silfab Prime NTC perform during heat waves and overcast days?
The Prime NTC carries a temperature coefficient of -0.29%/°C, among the best in the premium residential segment, limiting power loss on hot days compared to many PERC modules. In diffuse light conditions typical of overcast weather, N-type TOPCon cells deliver better low-irradiance performance than P-type technology, contributing to higher annual energy yield in variable, temperate climates.
Does the all-black design of the Silfab Prime NTC affect its performance or longevity?
The triple-black design (black frame, black backsheet, black cells) is primarily an aesthetic choice that pairs well with modern dark roofing materials. The black frame may marginally raise operating temperature, but this is offset by the excellent -0.29%/°C temperature coefficient of the N-type cells. Silfab backs the full module with a 25-year product warranty regardless of color variant.
How many 440 W Silfab Prime NTC modules are needed for a typical 10 kWp system, and will they fit on an average roof?
With the 440 W variant (SIL-440 QD), just 23 modules deliver 10.12 kWp of nameplate capacity — several panels fewer than with older 350–380 W modules. Fewer modules for the same output means a simpler installation and less roof area consumed, which is especially valuable on rooftops with limited usable surface area.
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