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VSUN Brand review

VSUN545-144BMH-DG

545 Wp PERC Bifacial 70%
ComparePV verdict

Strong in heat, heavy for its output

Rank 4,696 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)
32.7
Weak · 4.3 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The VSUN 144BMH-DG series consists of advanced modules based on bifacial technology, which redefine installation efficiency through the effective use of light reflected from the ground. Thanks to the use of an innovative Double Glass construction, these panels demonstrate extraordinary resistance to potential-induced degradation and extreme weather conditions, which directly translates into a significantly longer lifespan for the entire system. The use of 144 Half-Cut Mono PERC cells allows for the effective minimization of energy losses resulting from partial shading of rows, which is crucial in the professional design of high-density solar farms. This solution effectively eliminates the problem of rapid efficiency drops in difficult locations, offering investors exceptional stability of energy yields for decades. This series was designed primarily for the commercial sector and large-scale ground-mounted power plants, where maximizing the return on investment depends on every additional kilowatt generated thanks to high module efficiency. Compared to standard single-sided solutions, the VSUN 144BMH-DG withstands mechanical loads much better and is characterized by a low temperature coefficient, making it a reliable choice for demanding designers looking for the perfect balance between technological innovation and long-term durability of components.

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 60.0 53.0 Weak · bottom 11% 12,326
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 · 1 caution
Best for

Commercial, utility-scale and shaded-installations.

Not ideal for

Weight-limited structures.

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%.

Watch-outs
60.0 kg per kWp

Bottom 11% of the PERC 500-550 W segment, against a median of 53.0.

Notes from the database
  • At 21.1% efficiency, this panel is on par with typical PERC 500-550W modules
  • At 211.0 W/m² power density, roof space requirements are typical for PERC 500-550W panels
  • Temperature coefficient of -0.32%/°C vs median -0.35%/°C means ~1% less power loss at 65°C
  • At 32.7 kg, this panel is 4.3 kg heavier than the PERC 500-550W median (28.4 kg) - more demanding for installation crews
  • Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface

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 32.7 kg Weak Weak · 4.3 kg above median
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-DG 545 W 21.10% -0.320 32.7 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 Lighter, -0.4 pp, -5 yr warranty
VSUN540-144MH 540 W 20.90% -0.320 28.8 kg Lighter, -0.2 pp, -5 yr warranty
VSUN550-144BMH 550 W 21.29% -0.320 28.8 kg Lighter
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
Is the VSUN 144BMH-DG series still available for purchase?
No, the VSUN 144BMH-DG series has been discontinued by the manufacturer and is no longer part of the current product lineup. Availability is now limited to remaining distributor stock. If you're expanding an existing installation built on these panels, it's worth acting quickly since remaining units will keep depleting as stock sells through.
How does the bifacial technology in the VSUN 144BMH-DG differ from standard monofacial panels?
Bifacial VSUN 144BMH-DG panels generate power from both sides of the module, capturing light reflected from the ground, roof, or surrounding surfaces. Thanks to the double glass construction, the rear side of the cells also contributes to energy output, boosting total yield by up to several percentage points compared to standard monofacial panels, especially over bright surfaces like gravel or white roofing.
What is the maximum power and efficiency of the VSUN 144BMH-DG modules?
This series reaches up to 550 Wp of maximum power at a module efficiency of around 21.3%. This is achieved using 144 Half-Cut Mono PERC cells combined with MBB busbar technology, which reduces resistive losses and improves performance under partial shading conditions common in large ground-mounted arrays.
What warranty applies to the VSUN 144BMH-DG panels?
The manufacturer offers a 25-year product warranty covering material and workmanship defects, plus a 30-year power performance warranty with degradation not exceeding 2% in the first year and around 0.45% annually thereafter. Even though this series has been discontinued, warranty terms for already purchased and installed panels remain valid according to the original purchase documentation.
Is the VSUN 144BMH-DG suited for large ground-mounted solar farms or residential rooftop installations?
This series was designed primarily for commercial applications and utility-scale solar farms, where every extra kilowatt from high module efficiency and bifacial gain matters. Its double-glass construction makes it heavier than standard monofacial panels, which should be factored into mounting structure design for pitched residential roofs.
Do VSUN 144BMH-DG panels handle high temperatures and harsh weather conditions well?
Yes, the double-glass construction gives these modules a low temperature coefficient and improved resistance to potential-induced degradation (PID). This design maintains more stable energy output during hot weather and provides greater mechanical durability against snow and wind loads compared to standard single-glass panels.
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