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Silfab Brand review

SIL-330 NL

330 Wp PERC
ComparePV verdict

Warranty pick, no clear weak spot

Rank 12,064 of 14,005
Compare panels Datasheet PDF
Power (Wp)
330
Typical for its class
Efficiency (%)
19.40
Typical · median 19.00%
Density (Wp/m²)
194.1
Typical · median 190.0
Temp (%/°C)
-0.360
Typical · median -0.360
Weight (kg)
18.6
Strong · top 17%
Warranty (yrs)
30
Strong · top 15%

The SIL-330 NL series is a premium photovoltaic module built on monocrystalline PERC silicon cells that, thanks to 5-busbar technology, deliver stable current flow and reduce losses caused by microcracks and partial shading. The panel stands out with its sleek, all-black design, making it an excellent match for modern architecture in both residential and commercial installations where roof aesthetics matter just as much as performance. The module's construction is optimized for demanding operating conditions - a lightweight, anodized aluminum frame withstands high wind and snow loads, while tempered glass with an anti-reflective coating protects against mechanical damage, including hail. The materials and manufacturing processes used ensure PID resistance, translating into stable performance throughout the module's service life. The SIL-330 NL is produced in automated North American factories compliant with BAA/ARRA requirements, making it a natural choice for investors working on publicly funded projects in the US and for installers who value short supply chains. The manufacturer backs the module with a 25-year product warranty and a 30-year power warranty, giving investors long-term confidence in their return on investment.

Ranking

286 panels in the segment PERC 300-350 W
Metric This panel Median Position in segment Overall rank
Module efficiency 19.40% 19.00% Typical 12,735
Power density 194.1 190.0 Typical 12,721
Temperature coefficient -0.360 -0.360 Typical 12,345
Weight per kWp 56.4 60.0 Strong · top 17% 10,611
Performance warranty 30 yrs 25 yrs Strong · top 15% 21
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
30 year performance warranty

Top 15% of the PERC 300-350 W segment, against a median of 25 yrs.

56.4 kg per kWp

Top 17% of the PERC 300-350 W segment, against a median of 60.0.

Notes from the database
  • Efficiency of 19.4% matches the PERC 0-400W median
  • Power density of 194.1 W/m² matches the PERC 0-400W median
  • At -0.36%/°C, hot weather performance is typical for PERC 0-400W panels
  • Weight of 18.6 kg (1.9 kg below PERC 0-400W median of 20.5 kg) allows easier transport and roof mounting
  • In the top 91% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 330 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 19.40 % Typical Segment median 19.00%
Vmpp · Impp 33.30 V · 9.92 A Operating point at max power
Voc · Isc 40.50 V · 10.42 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1700×1000×38 mm · 1.70 m² of roof
Weight 18.6 kg Strong Strong · top 17%
Cells 60 · PERC Monocrystalline
Coefficient Pmax -0.360 %/°C Typical median -0.360 of its segment
Coefficient Voc · Isc -0.280 · 0.064 %/°C
NOCT 46 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 30 years Strong top 15% · median 25 yrs
End-of-warranty output 82.6 % Equals 273 W guaranteed
Degradation 2.90 % First year

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
-0.360 %/°C against a segment median of -0.360
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Silfab SIL-330 NL 330 W 19.40% -0.360 18.6 kg You are here
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +3.9 pp
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +3.9 pp
ZEUS 1.2 FullBlack 280W 280 W 23.31% -0.260 14.3 kg -50 W, cooler, +3.9 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, +3.8 pp, -5 yr warranty
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, +3.8 pp, -5 yr warranty
GKA182M285W 285 W 23.00% - 10.8 kg -45 W, lighter, +3.6 pp
GKA182M300W 300 W 23.00% - 16.2 kg -30 W, lighter, +3.6 pp
GKA210M320W 320 W 23.00% - 16.2 kg -10 W, lighter, +3.6 pp
GKA210M340W 340 W 23.00% - 16.2 kg +10 W, lighter, +3.6 pp
SIL-300 ML 300 W 17.60% -0.360 18.6 kg -30 W, -1.8 pp
SIL-310 ML 310 W 18.20% -0.360 18.6 kg -20 W, -1.2 pp
SIL-320 BL 320 W 18.84% -0.377 18.2 kg -10 W, hotter, -0.6 pp
JT440SYK(B) 440 W 22.90% -0.240 23.0 kg +110 W, cooler, +3.5 pp
JT435SYk(B) 435 W 22.70% -0.240 23.0 kg +105 W, cooler, +3.3 pp
SPR-MAX3-400-COM 400 W 22.60% -0.270 19.0 kg Cooler, +3.2 pp, +10 yr warranty
JT430SYk(B) 430 W 22.40% -0.240 23.0 kg +100 W, cooler, +3.0 pp

Found 41 panels of the same or similar size to this one, within ±10 mm. See them here Found 161 panels of the same or similar size to this one, within ±25 mm. See them here Found 289 panels of the same or similar size to this one, within ±50 mm. See them here Found 812 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the Silfab SIL-330 NL series still available for purchase?
The SIL-330 NL series has been discontinued from Silfab's current production lineup and replaced by newer, higher-wattage models. Units may still be available through distributors with remaining inventory, but buyers should confirm the manufacturing date and current warranty status directly with the seller, since the manufacturer no longer provides full after-sales support for phased-out models.
What warranty comes with the SIL-330 NL panels and what does it cover?
Silfab provides a 25-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. This means the panel should still deliver a guaranteed percentage of its original output after 30 years. For discontinued models, it's worth verifying with the distributor whether the warranty remains fully honored and who handles claims after the series ends production.
How does PERC cell technology in the SIL-330 NL differ from standard mono cells?
The PERC cells used in the SIL-330 NL feature an additional passivation layer on the cell's rear side that reflects unused photons back into the silicon structure, increasing their absorption. In practice, this results in higher energy conversion efficiency compared to standard mono cells, especially in low-light conditions like early morning or overcast days, without increasing the panel's footprint.
Do the SIL-330 NL panels meet BAA/ARRA requirements for publicly funded US projects?
Yes, SIL-330 NL panels are manufactured in Silfab's automated North American factories, which comply with Buy American Act (BAA) and American Recovery and Reinvestment Act (ARRA) requirements. This makes the modules eligible for public and government-funded projects in the US requiring documented component origin, which is important for investors on federally subsidized installations.
What roof types are best suited for the all-black SIL-330 NL panel?
The fully black design of the SIL-330 NL, including frame, backsheet, and cells, blends well with dark roof tiles and modern architecture, suiting both sloped residential roofs and commercial installations. The lightweight, anodized aluminum frame also simplifies installation and withstands high wind and snow loads, conditions common in Polish climate.
Does the 5-busbar technology in the SIL-330 NL affect panel durability?
Yes, five busbars distribute current within the cell across more parallel paths, so microcracks or partial shading have less impact on overall module performance. This design reduces the risk of hot-spot formation and improves the panel's mechanical resistance to thermal stress, resulting in more stable performance throughout its service life.
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