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Silfab Brand review

SIL-520 XM

520 Wp TOPCon Bifacial 80%
ComparePV verdict

Middle of its segment, needs the roof space

Rank 4,485 of 14,005
Compare panels Datasheet PDF
Power (Wp)
520
Typical for its class
Efficiency (%)
21.90
Weak · bottom 13%
Density (Wp/m²)
218.8
Weak · bottom 12%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
26.2
Typical · median 27.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Silfab Commercial NTC series is an advanced solution based on N-type TopCon cell technology, which redefines performance standards in the commercial sector. Thanks to the use of N-type monocrystalline cells, these panels effectively minimize energy losses related to light-induced degradation, which directly translates into stable and predictable electricity production for long decades. The unique design of the modules provides maximum power density on a limited roof area, allowing investors to significantly optimize installation costs while maintaining the highest possible energy yields. Products from this line were designed with harsh operating conditions in mind, offering increased mechanical resistance to wind and snow loads and excellent performance in diffused light conditions. What distinguishes the Commercial NTC series from the competition is rigorous quality control and precise matching of technical parameters to the specific needs of large industrial and office buildings. This solution effectively solves the problem of declining efficiency over time, offering modern entrepreneurs energy security and a faster return on investment. These modules are perfect where uncompromising reliability and aesthetics go hand in hand with innovation, guaranteeing a technological advantage over standard P-type panels.

Ranking

432 panels in the segment TOPCon 500-550 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.90% 22.73% Weak · bottom 13% 6,783
Power density 218.8 227.4 Weak · bottom 12% 6,837
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 50.4 52.4 Typical 3,761
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 · 2 caution
Best for

Commercial, utility-scale, shaded-installations and hot-climate.

Not ideal for

Roofs where every square metre has to count and tight roof space.

Watch-outs
218.8 watts per square metre

Bottom 12% of the TOPCon 500-550 W segment, against a median of 227.4.

21.90% module efficiency

Bottom 13% of the TOPCon 500-550 W segment, against a median of 22.73%.

Notes from the database
  • Efficiency of 21.9% is 0.8pp below the TOPCon 500-550W median (22.7%)
  • At 218.8 W/m², this panel generates 8.6 W/m² less per unit area than TOPCon 500-550W median (227.4 W/m²)
  • Temperature coefficient of -0.29%/°C matches the TOPCon 500-550W median
  • Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
  • Ranked #6783 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 520 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.90 % Weak Segment median 22.73%
Vmpp · Impp 40.48 V · 12.85 A Operating point at max power
Voc · Isc 47.52 V · 13.65 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2098×1133×35 mm · 2.38 m² of roof
Weight 26.2 kg Typical Typical · median 27.0 kg
Cells 132 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.240 · 0.040 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 89.3 % Equals 464 W guaranteed
Degradation 2.00 → 0.30 % 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
-
With bifacial gain
-

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
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Silfab SIL-520 XM 520 W 21.90% -0.290 26.2 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, lighter, +3.1 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +2.9 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +40 W, cooler, +2.9 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, lighter, +2.8 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +35 W, cooler, +2.7 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg -30 W, lighter, +2.6 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, lighter, +2.6 pp
SIL-500 HM 500 W 21.00% -0.360 26.2 kg -20 W, hotter, -0.9 pp
SIL-530 QM 530 W 22.30% -0.290 26.2 kg +10 W, +0.4 pp
SIL-540-XM-BIFACIAL 540 W 22.70% -0.290 26.2 kg +20 W, +0.8 pp
GKA120N-PRO-590W 590 W 23.82% -0.300 26.7 kg +70 W, hotter, +1.9 pp
GKA120N-PRO-585W 585 W 23.62% -0.300 26.7 kg +65 W, hotter, +1.7 pp
BGO 580 580 W 23.50% -0.290 26.0 kg +60 W, +1.6 pp
GKA120N-PRO-580W 580 W 23.42% -0.300 26.7 kg +60 W, hotter, +1.5 pp

Found 397 panels of the same or similar size to this one, within ±10 mm. See them here Found 408 panels of the same or similar size to this one, within ±25 mm. See them here Found 430 panels of the same or similar size to this one, within ±50 mm. See them here Found 884 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 Commercial NTC series come with and what does it cover?
The Silfab Commercial NTC series includes a 25-year product warranty covering material and manufacturing defects, plus a 30-year power warranty guaranteeing more than 89% of nominal power output after three decades. This is among the longest power warranties available in the commercial segment, directly improving project LCOE and providing long-term investment security for large-scale commercial and industrial facilities.
What is TOPCon technology and why do Silfab Commercial NTC panels outperform older PERC modules?
TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology featuring a thin tunnel oxide layer that minimizes charge carrier recombination. Compared to P-type PERC cells, Silfab Commercial NTC modules show up to 50% lower light-induced degradation (LID), higher efficiency reaching approximately 22%, and superior performance under high temperatures and low-irradiance conditions, resulting in more consistent annual energy yield.
Are Silfab Commercial NTC 570W panels suitable for flat rooftop installations on warehouses and industrial buildings?
Yes, the Commercial NTC series is specifically designed for such applications. The 570 Wp unit power enables higher capacity on limited roof space, reducing Balance of System (BoS) costs and labor. The modules' enhanced mechanical resistance to wind and snow loads makes them well suited for large, exposed rooftop surfaces subjected to variable weather conditions typical of commercial and logistics properties.
Is the Silfab Commercial NTC a bifacial panel and what does that mean for an investor?
Yes, the Silfab Commercial NTC is a bifacial module, meaning the rear surface also generates electricity from light reflected off the substrate or rooftop membrane. Depending on surface albedo, the rear-side energy gain ranges from a few percent up to 20-30%. For commercial installations this translates into a measurably higher annual energy yield without increasing the number of modules or the roof area used.
Is Silfab a reliable manufacturer and where are Commercial NTC panels produced?
Silfab Solar is a Tier 1 manufacturer headquartered in Canada, operating production facilities in North America (Canada and the United States). The company has over a decade of market presence and is regularly audited by independent financial institutions. Tier 1 status confirms bankability, making it easier to secure project financing for larger commercial and industrial PV installations.
How many Silfab Commercial NTC 570W modules are needed for a 100 kWp system?
At 570 Wp per module, a 100 kWp system requires approximately 176 panels (100,000 W ÷ 570 W ≈ 175.4 units). Compared to older 400-450 Wp panels, the lower module count reduces racking labor, fewer electrical connections are needed, and less Balance of System material is consumed, shortening project timelines and improving overall return on investment for commercial developers.
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