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Silfab Brand review

SIL-310 ML

310 Wp PERC
ComparePV verdict

Warranty pick, no clear weak spot

Rank 12,678 of 14,005
Compare panels Datasheet PDF
Power (Wp)
310
Weak · bottom 17%
Efficiency (%)
18.20
Typical · median 19.00%
Density (Wp/m²)
182.4
Typical · median 190.0
Temp (%/°C)
-0.360
Typical · median -0.360
Weight (kg)
18.6
Typical · median 19.0 kg
Warranty (yrs)
30
Strong · top 15%

The Silfab SIL ML series consists of monocrystalline PERC modules designed for residential and commercial installations where predictable performance and long-term durability matter most. The panels are manufactured in automated production facilities in North America, ensuring rigorous quality control at every stage and compliance with Buy American Act and ARRA requirements, a significant advantage for public and commercial projects across North America. The PERC technology combined with high-quality monocrystalline cells delivers stable energy output even under low-irradiance conditions and elevated operating temperatures. A robust, reinforced frame construction ensures resistance to snow and wind loads, making the ML series a solid choice for installers working in demanding climate conditions. A low power temperature coefficient limits summer performance losses, while the extensive quality control system results in consistent electrical parameters across the entire module batch. The SIL ML series is particularly well suited for projects where investors expect not only high efficiency but also documented domestic manufacturing origin and a stable manufacturer warranty.

Ranking

286 panels in the segment PERC 300-350 W
Metric This panel Median Position in segment Overall rank
Module efficiency 18.20% 19.00% Typical 13,178
Power density 182.4 190.0 Typical 13,151
Temperature coefficient -0.360 -0.360 Typical 12,345
Weight per kWp 60.0 60.0 Typical 12,365
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

1 positive · 0 caution
Best for

Residential, commercial and cold-climate.

Strengths
30 year performance warranty

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

Notes from the database
  • Efficiency of 18.2% is 1.2pp below the PERC 0-400W median (19.4%)
  • Power density of 182.3 W/m² is 12.1 W/m² below PERC 0-400W median (194.4 W/m²) - needs more roof space
  • Temperature coefficient of -0.36%/°C matches the PERC 0-400W median
  • At 18.6 kg, this panel is 1.9 kg lighter than PERC 0-400W median (20.5 kg) - easier handling during installation
  • In the top 94% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 310 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 18.20 % Typical Segment median 19.00%
Vmpp · Impp 33.05 V · 9.38 A Operating point at max power
Voc · Isc 40.25 V · 9.93 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 Typical Typical · median 19.0 kg
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 45 °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 256 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 -0.360
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Silfab SIL-310 ML 310 W 18.20% -0.360 18.6 kg You are here
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +5.1 pp
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +5.1 pp
ZEUS 1.2 FullBlack 280W 280 W 23.31% -0.260 14.3 kg Cooler, lighter, +5.1 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, +4.9 pp, -5 yr warranty
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, +4.9 pp, -5 yr warranty
GKA182M285W 285 W 23.00% - 10.8 kg -25 W, lighter, +4.8 pp
GKA182M260W 260 W 23.00% - 10.8 kg -50 W, lighter, +4.8 pp
GKA182M270W 270 W 23.00% - 10.8 kg -40 W, lighter, +4.8 pp
GKA182M300W 300 W 23.00% - 16.2 kg -10 W, lighter, +4.8 pp
SIL-300 ML 300 W 17.60% -0.360 18.6 kg -10 W, -0.6 pp
SIL-320 BL 320 W 18.84% -0.377 18.2 kg +10 W, hotter, +0.6 pp
SIL-330 NL 330 W 19.40% -0.360 18.6 kg +20 W, +1.2 pp
JT440SYK(B) 440 W 22.90% -0.240 23.0 kg +130 W, cooler, +4.7 pp
JT435SYk(B) 435 W 22.70% -0.240 23.0 kg +125 W, cooler, +4.5 pp
SPR-MAX3-400-COM 400 W 22.60% -0.270 19.0 kg +90 W, +4.4 pp, +10 yr warranty
JT430SYk(B) 430 W 22.40% -0.240 23.0 kg +120 W, cooler, +4.2 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 ML 310W series still available for purchase?
No, production of the SIL ML series, including the 310 Wp model, has been discontinued and these panels are no longer manufactured by Silfab. Units may still be found in distributor stock or as surplus offers, but new orders can no longer be placed directly with the manufacturer. Anyone expanding an existing array should expect limited availability of identical modules and consider comparable replacement panels instead.
What warranty comes with Silfab SIL ML panels?
The SIL ML series carries a 25-year product warranty and a 30-year linear power output warranty. Despite the end of production, these warranties remain valid for already installed systems, since Silfab, a Canada-based tier 1 manufacturer, continues to support service claims for its earlier discontinued series.
How does the PERC technology in SIL ML differ from standard monocrystalline panels?
PERC technology adds a passivation layer on the back of the cell that reflects unused photons back into the silicon instead of losing them as heat. This gives SIL ML panels higher conversion efficiency than standard mono modules, particularly in low-light conditions, and helps maintain more stable energy output at elevated roof operating temperatures.
Do Silfab SIL ML panels meet Buy American Act requirements for public projects?
Yes, the SIL ML series is manufactured in automated North American facilities and complies with Buy American Act and ARRA requirements. This is a key advantage for public tenders, federal projects, and commercial installations in the US and Canada, where documented manufacturing origin is often a prerequisite for funding eligibility.
Can SIL ML 310W panels handle heavy snow loads?
Yes, the SIL ML series features a reinforced frame construction designed for demanding climates, giving it higher resistance to snow and wind loads than standard frames. This made it a popular choice among installers working in regions with harsh winters, such as the northern United States and Canada.
Are Silfab SIL ML modules bifacial panels?
No, the SIL ML series consists of monofacial panels that generate power only from the front surface. Customers interested in bifacial technology, which also captures light reflected off the ground, should look at Silfab's newer bifacial series instead, as SIL ML does not offer this feature.
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