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Silfab Brand review

SIL-370 HC

370 Wp PERC
ComparePV verdict

Warranty pick, no clear weak spot

Rank 10,864 of 14,005
Compare panels Datasheet PDF
Power (Wp)
370
Typical for its class
Efficiency (%)
20.20
Typical · median 19.90%
Density (Wp/m²)
202.5
Strong · top 22%
Temp (%/°C)
-0.360
Typical · median -0.350
Weight (kg)
19.5
Strong · 1.9 kg below median
Warranty (yrs)
30
Strong · top 13%

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

579 panels in the segment PERC 350-400 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.20% 19.90% Typical 11,956
Power density 202.5 199.0 Strong · top 22% 11,855
Temperature coefficient -0.360 -0.350 Typical 12,345
Weight per kWp 52.7 55.8 Strong · top 20% 6,344
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

3 positive · 0 caution
Best for

Residential, cold-climate and shaded-installations.

Strengths
30 year performance warranty

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

52.7 kg per kWp

Top 20% of the PERC 350-400 W segment, against a median of 55.8.

202.5 watts per square metre

Top 22% of the PERC 350-400 W segment, against a median of 199.0.

Notes from the database
  • 20.2% module efficiency - 0.8pp better than the PERC 0-400W median of 19.4%
  • Power density of 202.5 W/m² packs 8.1 W/m² more into the same footprint vs PERC 0-400W median (194.4 W/m²)
  • At -0.36%/°C, hot weather performance is typical for PERC 0-400W panels
  • Weight of 19.5 kg is typical for PERC 0-400W panels
  • Ranked #11956 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 370 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.20 % Typical Segment median 19.90%
Vmpp · Impp 34.95 V · 10.60 A Operating point at max power
Voc · Isc 41.75 V · 11.25 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1762×1037×35 mm · 1.83 m² of roof
Weight 19.5 kg Strong Strong · 1.9 kg below median
Cells 120 · PERC Monocrystalline
Coefficient Pmax -0.360 %/°C Typical median -0.350 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 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
-0.360 %/°C against a segment median of -0.350
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Silfab SIL-370 HC 370 W 20.20% -0.360 19.5 kg You are here
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, +2.9 pp, -5 yr warranty
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, +2.9 pp, -5 yr warranty
GKA210M320W 320 W 23.00% - 16.2 kg -50 W, lighter, +2.8 pp
GKA210M340W 340 W 23.00% - 16.2 kg -30 W, lighter, +2.8 pp
GKA210M360W 360 W 23.00% - 16.2 kg -10 W, lighter, +2.8 pp
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg +10 W, lighter, +2.8 pp
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg +30 W, lighter, +2.8 pp
GKA210M400W (1/4*4*40) 400 W 23.00% - 18.0 kg +30 W, lighter, +2.8 pp
GKA210M380W (1/2*4*19) 380 W 23.00% - 17.1 kg +10 W, lighter, +2.8 pp
SPR-MAX3-400-COM 400 W 22.60% -0.270 19.0 kg Cooler, +2.4 pp, +10 yr warranty
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +140 W, cooler, +4.8 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +125 W, cooler, +4.6 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +135 W, cooler, +4.5 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +120 W, cooler, +4.3 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +130 W, cooler, +4.3 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +130 W, cooler, +4.3 pp

Found 189 panels of the same or similar size to this one, within ±10 mm. See them here Found 272 panels of the same or similar size to this one, within ±25 mm. See them here Found 319 panels of the same or similar size to this one, within ±50 mm. See them here Found 4135 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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