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Silfab Brand review

SIL-400 HC+

400 Wp PERC
ComparePV verdict

Warranty pick, weak in heat

Rank 10,286 of 14,005
Compare panels Datasheet PDF
Power (Wp)
400
Weak · bottom 9%
Efficiency (%)
20.20
Weak · bottom 19%
Density (Wp/m²)
201.7
Weak · bottom 19%
Temp (%/°C)
-0.360
Weak · bottom 15%
Weight (kg)
21.3
Typical · median 22.0 kg
Warranty (yrs)
30
Strong · top 17%

Silfab Prime is a solar panel series designed for single-family homes that need a reliable and visually clean rooftop solution. The panels use half-cut monocrystalline cells, which significantly reduce power losses under partial shading compared to conventional modules, keeping energy output stable even in less favorable sunlight conditions. The Prime NTC version is built on N-Type TOPCon technology, which limits cell degradation over time and improves performance in high temperatures and low-light conditions, translating into real gains in annual energy production. The distinctive, elegant triple black design blends well with modern architecture, keeping rooflines and facades visually clean. The frame construction has been reinforced for mechanical resilience, allowing the panels to withstand heavy snow and wind loads, making the series well suited to demanding climate conditions. Manufacturing takes place in North America, ensuring consistent quality control and a shorter supply chain. The manufacturer backs the panels with a long product warranty and a linear power performance warranty, giving system owners confidence in the long-term profitability of their investment.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.20% 20.60% Weak · bottom 19% 11,956
Power density 201.7 206.2 Weak · bottom 19% 12,015
Temperature coefficient -0.360 -0.350 Weak · bottom 15% 12,345
Weight per kWp 53.2 53.0 Typical 7,089
Performance warranty 30 yrs 25 yrs Strong · top 17% 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

1 positive · 3 caution
Best for

Residential, cold-climate and shaded-installations.

Not ideal for

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

Strengths
30 year performance warranty

Top 17% of the PERC 400-450 W segment, against a median of 25 yrs.

Watch-outs
-0.360 %/°C temperature coefficient

Bottom 15% of the PERC 400-450 W segment, against a median of -0.350.

201.7 watts per square metre

Bottom 19% of the PERC 400-450 W segment, against a median of 206.2.

20.20% module efficiency

Bottom 19% of the PERC 400-450 W segment, against a median of 20.60%.

Notes from the database
  • At 20.2% efficiency, this panel is on par with typical PERC 400-450W modules
  • 201.7 W/m² power density is 4.5 W/m² below PERC 400-450W median (206.2 W/m²) - requires larger installation area
  • At -0.36%/°C, hot weather performance is typical for PERC 400-450W panels
  • In the top 85% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 400 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.20 % Weak Segment median 20.60%
Vmpp · Impp 38.79 V · 10.32 A Operating point at max power
Voc · Isc 45.51 V · 10.85 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1914×1036×35 mm · 1.98 m² of roof
Weight 21.3 kg Typical Typical · median 22.0 kg
Cells 132 · PERC Monocrystalline
Coefficient Pmax -0.360 %/°C Weak bottom 15% of its segment
Coefficient Voc · Isc -0.280 · 0.064 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 30 years Strong top 17% · median 25 yrs
End-of-warranty output 82.6 % Equals 330 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
-0.360 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Silfab SIL-400 HC+ 400 W 20.20% -0.360 21.3 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg +40 W, cooler, +2.9 pp
JST-EDMH-(445-465)W-TD (450W class) 450 W 23.05% -0.300 20.5 kg +50 W, cooler, +2.9 pp
QNN182-HG450-54 450 W 23.04% -0.290 24.0 kg +50 W, cooler, +2.8 pp
HY440-N108BDD 450 W 23.04% -0.300 23.5 kg +50 W, cooler, +2.8 pp
NLBK-27-450 450 W 23.04% -0.300 22.9 kg +50 W, cooler, +2.8 pp
RS41-450NBG-E3 450 W 23.04% -0.290 24.5 kg +50 W, cooler, +2.8 pp
SIL-410 HC+ 410 W 20.70% -0.360 21.3 kg +10 W, +0.5 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +160 W, cooler, +4.6 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +155 W, cooler, +4.4 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +150 W, cooler, +4.2 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +140 W, cooler, +4.2 pp
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +140 W, cooler, +4.2 pp
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg +145 W, cooler, +4.1 pp
LR7-60HVH-545M 545 W 24.20% -0.260 25.0 kg +145 W, cooler, +4.0 pp

Found 25 panels of the same or similar size to this one, within ±10 mm. See them here Found 47 panels of the same or similar size to this one, within ±25 mm. See them here Found 238 panels of the same or similar size to this one, within ±50 mm. See them here Found 1890 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What are half-cut cells in Silfab Prime panels and what's the benefit?
Silfab Prime panels use 132 half-cut monocrystalline cells, meaning each cell is split into two smaller segments. This design significantly reduces voltage drops and power losses caused by partial shading, such as from a chimney, antenna, or fallen leaves, compared to panels with full-size cells. In practice, this results in more stable daily energy production even when part of the roof is periodically shaded.
What warranty comes with Silfab Prime panels?
Silfab Prime panels come with a 25-year product warranty and a 30-year linear power warranty, guaranteeing a gradually declining but predictable performance level over the entire period. This is one of the longer warranties available for residential solar panels, giving homeowners strong assurance about the long-term return on their investment.
Is Silfab Prime suitable for roofs exposed to heavy snow loads or strong wind?
Yes, the Silfab Prime frame is reinforced for mechanical durability and certified under IEC and UL standards, which include load-resistance testing. The panel withstands high snow loads and strong wind, making the series well suited to demanding climate conditions, similar to those found in many regions during winter.
What's the difference between Silfab Prime and the Silfab Prime NTC version?
The standard Silfab Prime is built on proven PERC cell technology, while the Prime NTC version uses newer N-Type TOPCon technology. TOPCon reduces cell degradation over time and improves performance at high temperatures and in low-light conditions, translating into higher annual energy yield. Prime NTC is the option for buyers seeking slightly higher efficiency at a higher price point.
Is Silfab Prime a bifacial (dual-sided) solar panel?
No, Silfab Prime is a monofacial panel with a maximum power output of up to 410 Wp, optimized for standard installation on a sloped residential roof. Unlike bifacial panels, it doesn't generate additional energy from the rear side of the module, making it a sufficient and more cost-effective solution for typical rooftop installations mounted close to the roof surface.
Is Silfab a Tier 1 manufacturer, and where are Prime panels made?
Yes, Silfab is a Tier 1 manufacturer, reflecting its financial stability and long-standing industry experience. All Prime panel production takes place in North America, with the company headquartered in Canada. This ensures high manufacturing consistency, tighter quality control, and a shorter, more predictable supply chain compared to panels imported from distant markets.
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