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Selfa Brand review

SV120M.5.0-330

330 Wp PERC
ComparePV verdict

Light for its output, no clear weak spot

Rank 13,064 of 14,129
Compare panels Datasheet PDF
Power (Wp)
330
Typical for its class
Efficiency (%)
19.60
Typical · median 19.00%
Density (Wp/m²)
196.0
Typical · median 190.0
Temp (%/°C)
-0.370
Typical · median -0.360
Weight (kg)
18.8
Strong · top 24%
Warranty (yrs)
25
Typical · median 25 yrs

The SV120M.5.0 series consists of monocrystalline PREMIUM modules engineered for installations expected to perform reliably for decades under variable Polish weather conditions. The panels combine half-cut cell technology with PERC cells and a 5-busbar layout, reducing power losses and improving resistance to microcracks and partial shading. The SELF-C self-cleaning surface sheds dirt and water more effectively, helping the module maintain higher yield with less frequent maintenance. The construction is PID free, protecting against potential-induced degradation, and the reinforced frame delivers strong mechanical resistance to wind, snow, and hail loads - a key factor for both rooftop and ground-mounted installations exposed to harsh conditions. The manufacturer guarantees positive power tolerance only, eliminating the risk of underdelivering against datasheet specifications. This makes the series a solid choice for investors and installers seeking a proven, Polish-made premium product backed by a nationwide service network and a long-term power warranty, which translates into a real reduction in LCOE over the system's lifetime.

Ranking

291 panels in the segment PERC 300-350 W
Metric This panel Median Position in segment Overall rank
Module efficiency 19.60% 19.00% Typical 12,677
Power density 196.0 190.0 Typical 12,677
Temperature coefficient -0.370 -0.360 Typical 13,161
Weight per kWp 57.0 60.3 Strong · top 24% 11,049
Performance warranty 25 yrs 25 yrs Typical 9,912
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

1 positive · 0 caution
Best for

Residential and commercial.

Strengths
57.0 kg per kWp

Top 24% of the PERC 300-350 W segment, against a median of 60.3.

Notes from the database
  • Efficiency of 19.6% matches the PERC 0-400W median
  • At 196.0 W/m² power density, roof space requirements are typical for PERC 0-400W panels
  • Temperature coefficient of -0.37%/°C matches the PERC 0-400W median
  • At 18.8 kg, this panel is 1.7 kg lighter than PERC 0-400W median (20.5 kg) - easier handling during installation
  • #12677 for efficiency, #13161 for temperature performance out of 14129 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 330 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 19.60 % Typical Segment median 19.00%
Vmpp · Impp 34.70 V · 9.52 A Operating point at max power
Voc · Isc 40.70 V · 10.13 A Sizes the string length
Max system voltage 1000 V Longer strings than 1000 V modules
Dimensions 1680×1002×35 mm · 1.68 m² of roof
Weight 18.8 kg Strong Strong · top 24%
Cells 120 · PERC Monocrystalline
Coefficient Pmax -0.370 %/°C Typical median -0.360 of its segment
Coefficient Voc · Isc -0.340 · 0.060 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 83.0 % Equals 299 W guaranteed
Degradation 3.00 → 0.22 % 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
-0.370 %/°C against a segment median of -0.360
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Selfa SV120M.5.0-330 330 W 19.60% -0.370 18.8 kg You are here
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +3.7 pp
NS-300MH-72 300 W 23.32% -0.290 12.5 kg Cooler, lighter, +3.7 pp
ZEUS 1.2 FullBlack 280W 280 W 23.31% -0.260 14.3 kg -50 W, cooler, +3.7 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +3.5 pp
NS-330MH-80 330 W 23.15% -0.290 15.0 kg Cooler, lighter, +3.5 pp
ZEUS 3.2 285WP FullBlack 285 W 23.14% -0.260 15.6 kg Cooler, +3.5 pp, +5 yr warranty
GKA182M285W 285 W 23.00% - 10.8 kg Lighter, +3.4 pp, +5 yr warranty
GKA182M300W 300 W 23.00% - 16.2 kg -30 W, +3.4 pp, +5 yr warranty
GKA210M320W 320 W 23.00% - 16.2 kg Lighter, +3.4 pp, +5 yr warranty
SV60M.2.1-315 315 W 18.80% -0.370 18.5 kg -15 W, -0.8 pp
SV120M.5(3)-315 315 W 19.00% -0.390 18.5 kg -15 W, hotter, -0.6 pp
SV60M.2.1-320 320 W 19.10% -0.370 18.5 kg -10 W, -0.5 pp
SV120M.2-320 320 W 19.10% -0.370 18.3 kg -10 W, -0.5 pp
SV120M.5(3)-320 320 W 19.30% -0.390 18.5 kg -10 W, hotter, -0.3 pp
SV60M.2.1-325 325 W 19.40% -0.370 18.5 kg -0.2 pp
SV120M.5(3)-330 330 W 19.50% -0.370 18.9 kg Very close match
JT440SYK(B) 440 W 22.90% -0.240 23.0 kg +110 W, cooler, +3.3 pp

Found 143 panels of the same or similar size to this one, within ±10 mm. See them here Found 230 panels of the same or similar size to this one, within ±25 mm. See them here Found 470 panels of the same or similar size to this one, within ±50 mm. See them here Found 813 panels of the same or similar size to this one, within ±100 mm. See them here

About the SV120M.5.0 series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

Is the Selfa SV120M.5.0-330 panel still available for purchase?
No, the SV120M.5.0-330 series has been discontinued and replaced by newer, higher-power Selfa models. Some units may still be found at distributors as leftover stock, but availability is limited. The manufacturer's warranty (12 years product, 25 years power) remains valid for panels already purchased and installed, regardless of the series being discontinued.
What warranty does the Selfa SV120M.5.0 come with and what does it cover?
The manufacturer provides a 12-year product warranty against material and workmanship defects, plus a 25-year power output warranty. Additionally, Selfa guarantees a positive-only power tolerance (0/+5W), so the purchased panel never underperforms its rated datasheet output. This is a key advantage when comparing offers, as it eliminates the risk of an underperforming installation.
How does the half-cut technology with 5 busbars in the SV120M.5.0 differ from standard PERC panels?
Half-cut means standard cells are split in half, reducing current losses and improving shading tolerance from obstacles like chimneys or antennas. Combined with 5 busbars (instead of the typical 3-4), current has more paths to flow through, lowering resistance and increasing resistance to microcracks. The result is higher efficiency (19.6%) and lower power degradation over time compared to older cell designs.
Can SV120M.5.0 panels withstand strong wind, snow, and hail on a roof?
Yes, the module features a reinforced anodized aluminum frame and 3.2mm tempered glass, providing the mechanical durability needed for demanding roof and ground-mount conditions typical in Poland. The construction meets snow and wind load standards expected of premium-class modules, making it suitable for both sloped roofs and free-standing installations exposed to variable weather.
What is PID-free technology and why does it matter when choosing solar panels?
PID (Potential Induced Degradation) is a power loss effect caused by a voltage difference between the cells and the frame, especially in high-system-voltage installations. SV120M.5.0 panels are designed to be PID-free, protecting them from this degradation and maintaining stable performance throughout their service life. This matters most in large series-connected arrays where string voltage can be high.
Does the SELF-C surface really reduce the need to clean the SV120M.5.0 panels?
SELF-C is a special glass surface coating that helps water run off along with accumulated dirt and dust, creating a self-cleaning effect. In practice this reduces how often manual cleaning is needed, especially when panels are tilted to allow natural rainwater runoff. However, in very dusty environments (e.g., farmland or unpaved roads), periodic cleaning is still recommended to maintain peak output.
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