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Suntech STP545S-C72/Pmh+
Suntech Brand review

STP545S-C72/Pmh+

545 Wp TOPCon Bifacial 70%
ComparePV verdict

Middle of its segment, weak in heat

Rank 6,854 of 14,129
Compare panels Datasheet PDF
Power (Wp)
545
Strong · top 2%
Efficiency (%)
21.10
Weak · bottom 6%
Density (Wp/m²)
211.0
Weak · bottom 6%
Temp (%/°C)
-0.340
Weak · bottom 5%
Weight (kg)
32.0
Weak · 5.0 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The Suntech Ultra V series redefines performance standards through the use of large-scale M10 silicon wafers and advanced Half-Cut technology. This design effectively solves the problem of power losses resulting from internal resistance, which translates into higher yields even in difficult lighting conditions. A key differentiator is the innovative high-density cell interconnect, which minimizes gaps between them, maximizing the module's active area without drastically increasing its dimensions. Thanks to the use of Multi-Busbar technology, the panels show less susceptibility to micro-cracks and conduct current more efficiently. This series was designed for commercial investments and photovoltaic farms, where low LCOE cost of energy and operational stability at high temperatures are of key importance. Solid construction and optimized mechanical stress distribution make the Ultra V outperform the competition in terms of resistance to extreme weather events. Choosing this line is a guarantee of safety for projects requiring the highest reliability and fast return on investment, while maintaining excellent aesthetics.

Ranking

435 panels in the segment TOPCon 500-550 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.10% 22.74% Weak · bottom 6% 9,365
Power density 211.0 227.4 Weak · bottom 6% 9,380
Temperature coefficient -0.340 -0.290 Weak · bottom 5% 8,846
Weight per kWp 58.7 52.4 Weak · bottom 5% 11,933
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Commercial, utility-scale and shaded-installations.

Not ideal for

Hot climates, weight-limited structures and tight roof space.

Watch-outs
-0.340 %/°C temperature coefficient

Bottom 5% of the TOPCon 500-550 W segment, against a median of -0.290. Ranked 8,846th in the whole database.

58.7 kg per kWp

Bottom 5% of the TOPCon 500-550 W segment, against a median of 52.4. Ranked 11,933rd in the whole database.

21.10% module efficiency

Bottom 6% of the TOPCon 500-550 W segment, against a median of 22.74%. Ranked 9,365th in the whole database.

Notes from the database
  • At 21.1% efficiency, this panel is 1.6pp below the TOPCon 500-550W median of 22.7%
  • At 211.0 W/m², this panel generates 16.4 W/m² less per unit area than TOPCon 500-550W median (227.4 W/m²)
  • At -0.34%/°C, loses 0.05pp more power per degree than TOPCon 500-550W median (-0.29%/°C)
  • At 32.0 kg, this panel is 5.0 kg heavier than the TOPCon 500-550W median (27.0 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 % Weak Segment median 22.74%
Vmpp · Impp 41.87 V · 13.02 A Operating point at max power
Voc · Isc 49.69 V · 13.96 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2278×1134×30 mm · 2.58 m² of roof
Weight 32.0 kg Weak Weak · 5.0 kg above median
Cells 144 · TOPCon Monocrystalline
Bifaciality 70 % Rear output as a share of front
Coefficient Pmax -0.340 %/°C Weak bottom 5% of its segment
Coefficient Voc · Isc -0.260 · 0.050 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 15 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

Datasheet charts

Open datasheet PDF

Measured curves published by Suntech in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 545 Wp appear here. The rest cover the whole series.

Current-Voltage and Power-Voltage Curves at Varying Irradiance Current-Voltage and Power-Voltage Curves at Varying Irradiance Whole series

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
-0.340 %/°C against a segment median of -0.290
-
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
Suntech STP545S-C72/Pmh+ 545 W 21.10% -0.340 32.0 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
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 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
STP530S-C72/Pmh+ 530 W 20.50% -0.340 32.0 kg -15 W, -0.6 pp
STP535S-C72/Pmh+ 535 W 20.70% -0.340 32.0 kg -10 W, -0.4 pp
STP540S-C72/Pmh+ 540 W 20.90% -0.340 32.0 kg -0.2 pp
STP545S-C72/Nmh+ 545 W 21.10% -0.320 32.8 kg Cooler
STP550S-C72/Pmh+ 550 W 21.30% -0.340 32.0 kg Very close match
STP550S-C72/Nmh+ 550 W 21.30% -0.320 32.8 kg Cooler
STP555S-C72/Pmh+ 555 W 21.50% -0.340 32.0 kg +10 W, +0.4 pp
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

Found 2327 panels of the same or similar size to this one, within ±10 mm. See them here Found 2369 panels of the same or similar size to this one, within ±25 mm. See them here Found 2383 panels of the same or similar size to this one, within ±50 mm. See them here Found 2548 panels of the same or similar size to this one, within ±100 mm. See them here

About the Ultra V series

6 answered

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

How does the TOPCon technology used in Suntech Ultra V differ from older PERC cells?
TOPCon (Tunnel Oxide Passivated Contact) uses an additional ultra-thin passivating oxide layer that reduces carrier recombination on the rear side of the cell. In practice, this means higher conversion efficiency, a smaller power drop at high temperatures, and slower degradation over time compared to conventional PERC cells used in older series.
Do bifacial Suntech Ultra V panels actually generate more energy than standard modules?
Yes, the bifacial design of Ultra V captures light reflected off the ground, roof, or surrounding surfaces, which with a bright mounting surface (e.g., white gravel, light-colored roof) can yield an additional energy gain of several to over ten percent compared to monofacial panels. The effect depends on mounting height, ground albedo, and installation tilt angle.
What warranty comes with Suntech Ultra V panels and what does it cover?
The Ultra V series comes with a 12-year product warranty covering material and workmanship defects, plus a 30-year linear power warranty guaranteeing the declared energy output level over time. This is one of the longer coverage periods currently available on the market for this type of panel, reducing investment risk.
Are Ultra V 550 Wp panels suitable for large commercial installations or solar farms?
Yes, the series was designed specifically for commercial projects and utility-scale solar farms. The high unit power of 550 Wp reduces the number of modules needed for a given system capacity, lowering costs for racking, wiring, and labor, which directly contributes to a lower LCOE.
Does Suntech, as a manufacturer, provide reliability and investment security for Ultra V panels?
Suntech is a tier 1 manufacturer, meaning it appears on the list of reputable suppliers with documented financial stability, production scale, and a proven delivery track record for institutions financing renewable energy projects. This status makes it easier to secure bank financing and insurance for installations, since manufacturer-related risk is low.
Do Suntech Ultra V panels perform well in summer, under high roof temperatures?
Yes, thanks to TOPCon technology and the optimized Half-Cut cell structure, Ultra V panels have a lower power temperature coefficient than traditional PERC modules. This means a smaller efficiency drop as modules heat up during hot days, which is especially important on roofs with poor ventilation.
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