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VSUN Brand review

VSUN545-144BMH

545 Wp PERC Bifacial 70%
ComparePV verdict

Strong in heat, no clear weak spot

Rank 4,619 of 14,005
Compare panels Datasheet PDF
Power (Wp)
545
Strong · top 12%
Efficiency (%)
21.10
Strong · top 20%
Density (Wp/m²)
211.0
Strong · top 18%
Temp (%/°C)
-0.320
Strong · top 3%
Weight (kg)
28.8
Typical · median 28.4 kg
Warranty (yrs)
30
Typical · median 30 yrs

VSUN 144BMH panels are advanced modules based on half-cut cell technology, which significantly reduces energy losses resulting from internal resistance and improves efficiency during partial shading. Thanks to the use of a multi-busbar design, this series guarantees better current flow and higher resistance to micro-cracks, which directly translates into the longevity of the entire installation. The use of PERC technology allows for more efficient operation in low-light conditions, effectively solving the problem of low performance on cloudy days, so characteristic of the Polish climate. These solutions make VSUN 144BMH an ideal choice for large-scale solar farms and large commercial installations, where a quick return on investment and maximizing yields from every square meter of area are key. Importantly, this series stands out for its increased resistance to potential-induced degradation (PID), which ensures the stability of power parameters over many years of operation. Compared to standard modules, VSUN offers a more favorable temperature coefficient, allowing high efficiency to be maintained even during summer heat. It is a solid foundation for projects requiring uncompromising reliability and the highest mechanical resistance to harsh weather conditions.

Ranking

706 panels in the segment PERC 500-550 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.10% 20.90% Strong · top 20% 9,297
Power density 211.0 209.0 Strong · top 18% 9,312
Temperature coefficient -0.320 -0.350 Strong · top 3% 8,312
Weight per kWp 52.8 53.0 Typical 6,543
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

3 positive · 0 caution
Best for

Commercial, utility-scale and shaded-installations.

Strengths
-0.320 %/°C temperature coefficient

Top 3% of the PERC 500-550 W segment, against a median of -0.350. Ranked 8,312th in the whole database.

211.0 watts per square metre

Top 18% of the PERC 500-550 W segment, against a median of 209.0.

21.10% module efficiency

Top 20% of the PERC 500-550 W segment, against a median of 20.90%.

Notes from the database
  • At 21.1% efficiency, this panel is on par with typical PERC 500-550W modules
  • Power density of 211.0 W/m² matches the PERC 500-550W median
  • Temperature coefficient of -0.32%/°C vs median -0.35%/°C means ~1% less power loss at 65°C
  • Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface
  • #9297 for efficiency, #8312 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 545 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.10 % Strong Segment median 20.90%
Vmpp · Impp 41.80 V · 13.04 A Operating point at max power
Voc · Isc 49.81 V · 13.92 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2278×1134×35 mm · 2.58 m² of roof
Weight 28.8 kg Typical Typical · median 28.4 kg
Cells 144 · PERC Monocrystalline
Bifaciality 70 % Rear output as a share of front
Coefficient Pmax -0.320 %/°C Strong top 3% of its segment
Coefficient Voc · Isc -0.270 · 0.048 %/°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 85.0 % Equals 463 W guaranteed
Degradation 2.00 → 0.45 % 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
-0.320 %/°C against a segment median of -0.350
-
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
VSUN VSUN545-144BMH 545 W 21.10% -0.320 28.8 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, lighter, +3.9 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +3.7 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg Cooler, lighter, +3.7 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, lighter, +3.6 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, lighter, +3.5 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, lighter, +3.4 pp
VSUN535-144MH 535 W 20.71% -0.320 28.8 kg -10 W, -0.4 pp, -5 yr warranty
VSUN540-144MH 540 W 20.90% -0.320 28.8 kg -0.2 pp, -5 yr warranty
VSUN550-144BMH 550 W 21.29% -0.320 28.8 kg Very close match
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +105 W, cooler, +4.1 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +100 W, cooler, +3.9 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +95 W, cooler, +3.7 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +90 W, cooler, +3.5 pp
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg +85 W, cooler, +3.3 pp

Found 2326 panels of the same or similar size to this one, within ±10 mm. See them here Found 2368 panels of the same or similar size to this one, within ±25 mm. See them here Found 2382 panels of the same or similar size to this one, within ±50 mm. See them here Found 2547 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is half-cut cell technology used in the VSUN 144BMH panels?
Half-cut technology splits standard cells in half, so the current flowing through each half is lower, reducing resistive losses and heat buildup within the module. In the VSUN 144BMH series this is combined with a multi-busbar design that improves current flow and increases resistance to microcracks. The result is higher efficiency, better performance under partial shading, and longer panel lifespan in demanding operating conditions.
Are VSUN 144BMH panels bifacial, and how much extra energy can they generate?
Yes, the 144BMH series uses bifacial PERC cells with a bifaciality factor of around 70%, allowing the rear side to capture light reflected off the ground. Depending on the surrounding surface — white roofing membrane, gravel, snow, or light-colored ground — the extra yield from the back side can reach 4 to 10% of nominal power, making these panels an attractive choice for ground-mount installations and utility-scale farms.
What warranty does VSUN offer on the 144BMH series panels?
VSUN 144BMH panels come with a 25-year product warranty covering materials and workmanship, plus a 30-year linear power warranty guaranteeing that a high percentage of the initial output is maintained throughout the panel's lifetime. This is a long coverage period compared to many competing modules, translating into greater investment security and a more stable return from the PV installation.
What type of installations are VSUN 144BMH panels best suited for — residential or commercial?
With power output up to 550 Wp, PERC technology, half-cut cells, and enhanced PID resistance, VSUN 144BMH panels are primarily designed for utility-scale solar farms and large commercial installations, where maximizing energy yield per square meter and achieving a fast return on investment are key priorities. They can also work in larger residential systems, though their size and power output make them best suited for professional-scale projects.
How do VSUN 144BMH panels perform in high summer temperatures?
VSUN 144BMH panels have a favorable power temperature coefficient of around -0.32%/°C, meaning less output loss as temperatures rise compared to standard modules. PERC technology further supports stable cell performance at higher temperatures, so the panel maintains high efficiency even on hot summer days when module temperature on a roof can exceed 60°C (140°F).
Is VSUN a Tier 1 manufacturer, and are its panels a reliable choice despite not having that status?
VSUN does not currently hold Tier 1 status under the BNEF ranking, which mainly reflects a manufacturer's financial stability relevant to banks funding large projects rather than technical quality. The company is headquartered in Germany and backs its panels with a 25-year product warranty and a 30-year power warranty, which in practice signals confidence in the durability of its modules despite lacking formal Tier 1 classification.
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