Skip to main content
Suntech STP430S-C54/Umh
Suntech Brand review

STP430S-C54/Umh

430 Wp TOPCon
ComparePV verdict

Middle of its segment, weak in heat

Rank 10,742 of 14,129
Compare panels Datasheet PDF
Power (Wp)
430
Typical for its class
Efficiency (%)
22.00
Typical · median 22.00%
Density (Wp/m²)
219.9
Typical · median 220.2
Temp (%/°C)
-0.320
Weak · bottom 7%
Weight (kg)
22.1
Typical · median 22.0 kg
Warranty (yrs)
25
Weak · bottom 7%

Suntech Ultra V Pro mini photovoltaic panels represent a breakthrough in the category of compact modules, utilizing advanced N-type TOPCon cell technology to achieve maximum efficiency on limited surfaces. This series was designed with prosumer installations in mind, where the optimal utilization of challenging roof areas while maintaining an aesthetic appearance is of key importance. Thanks to the use of high-density cell packing technology, these modules offer a significantly higher energy yield per square meter than standard competing solutions. This solves the problem of limited installation space, allowing for the construction of an efficient system even on small or complex roofs. The innovative design based on MBB multi-busbar connections minimizes resistive losses and improves current flow, which translates into stable operation across a wide range of weather conditions. Suntech Ultra V Pro mini stands out in the market with its exceptional resistance to degradation and an excellent temperature coefficient, guaranteeing the long-term profitability of the investment. It is an ideal choice for homeowners seeking maximum reliability and high efficiency enclosed in a lightweight, handy form that facilitates installation and reduces the load on the roof structure while maintaining excellent performance in low light.

Ranking

1,220 panels in the segment TOPCon 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.00% 22.00% Typical 6,580
Power density 219.9 220.2 Typical 6,751
Temperature coefficient -0.320 -0.290 Weak · bottom 7% 8,376
Weight per kWp 51.4 51.5 Typical 4,813
Performance warranty 25 yrs 30 yrs Weak · bottom 7% 9,912
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 2 caution
Best for

Residential.

Not ideal for

Hot climates and owners who want a long output guarantee.

Watch-outs
-0.320 %/°C temperature coefficient

Bottom 7% of the TOPCon 400-450 W segment, against a median of -0.290. Ranked 8,376th in the whole database.

25 year performance warranty

Bottom 7% of the TOPCon 400-450 W segment, against a median of 30 yrs. Ranked 9,912th in the whole database.

Notes from the database
  • Efficiency of 22.0% matches the TOPCon 400-450W median
  • Power density of 219.9 W/m² matches the TOPCon 400-450W median
  • Temperature coefficient of -0.32%/°C is 0.03pp worse than TOPCon 400-450W median (-0.29%/°C) - higher losses in summer heat
  • #6580 for efficiency, #8376 for temperature performance out of 14129 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 430 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.00 % Typical Segment median 22.00%
Vmpp · Impp 32.43 V · 13.26 A Operating point at max power
Voc · Isc 38.26 V · 14.17 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1724×1134×30 mm · 1.96 m² of roof
Weight 22.1 kg Typical Typical · median 22.0 kg
Cells 108 · TOPCon Monocrystalline
Coefficient Pmax -0.320 %/°C Weak bottom 7% of its segment
Coefficient Voc · Isc -0.260 · 0.046 %/°C
NOCT 42 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 25 years Weak bottom 7% · median 30 yrs
End-of-warranty output 89.4 % Equals 376 W guaranteed
Degradation 1.00 → 0.40 % 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 430 Wp appear here. The rest cover the whole series.

Current-Voltage & Power-Voltage Curve Current-Voltage & Power-Voltage Curve 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
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.320 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Suntech STP430S-C54/Umh 430 W 22.00% -0.320 22.1 kg You are here
AIKO-A480-MAH54Mw 480 W 24.10% -0.260 21.5 kg +50 W, cooler, +2.1 pp
GK-5-54HG-480M 480 W 24.10% -0.260 21.0 kg +50 W, cooler, +2.1 pp
JKM480N-48QL6-DB-F2-EU 480 W 24.02% -0.260 24.4 kg +50 W, cooler, +2.0 pp
GKA96N-PRO-480W 480 W 24.02% -0.300 21.0 kg +50 W, +2.0 pp, +5 yr warranty
STP390S-C54/Umh 390 W 19.90% -0.360 22.1 kg -40 W, hotter, -2.1 pp
STP395S-C54/Umhm 395 W 20.20% -0.340 21.0 kg -35 W, hotter, -1.8 pp
STP395S-C54/Umh 395 W 20.20% -0.360 22.1 kg -35 W, hotter, -1.8 pp
STP400S-C54/Umhm 400 W 20.50% -0.340 21.0 kg -30 W, hotter, -1.5 pp
STP400S-C54/Umh 400 W 20.50% -0.360 22.1 kg -30 W, hotter, -1.5 pp
STP405S-C54/Umhm 405 W 20.70% -0.340 21.0 kg -25 W, hotter, -1.3 pp
STP405S-C54/Umh 405 W 20.70% -0.360 22.1 kg -25 W, hotter, -1.3 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +80 W, cooler, +3.0 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +65 W, cooler, +2.8 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +75 W, cooler, +2.7 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg +75 W, cooler, +2.7 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +60 W, cooler, +2.5 pp

Found 1797 panels of the same or similar size to this one, within ±10 mm. See them here Found 1931 panels of the same or similar size to this one, within ±25 mm. See them here Found 3413 panels of the same or similar size to this one, within ±50 mm. See them here Found 4007 panels of the same or similar size to this one, within ±100 mm. See them here

About the Ultra V Pro mini series

6 answered

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

What is the maximum power output of the Suntech Ultra V Pro mini panels?
The Ultra V Pro mini series reaches a maximum power output of up to 430 Wp. This is achieved through N-type TOPCon cells and high-density cell packing technology, allowing a compact module to generate more energy per square meter than traditional PERC panels of similar dimensions.
Are the Suntech Ultra V Pro mini panels suitable for small or complex roofs?
Yes, the mini series is specifically designed for limited or irregular roof surfaces. High-density cell packing maximizes energy yield from a small footprint, making it a strong fit for roofs with dormers, chimneys, or complex geometry where standard large-format modules are difficult to fit.
What warranty comes with the Suntech Ultra V Pro mini panels?
The manufacturer provides a 12-year product warranty and a 25-year power performance warranty. This means the modules are covered long-term against manufacturing defects as well as excessive power output degradation, which is standard for Tier 1 solar panels.
How does the TOPCon technology in the Ultra V Pro mini differ from standard PERC panels?
N-type TOPCon cells feature an additional passivation layer that reduces carrier recombination and increases efficiency compared to older P-type PERC cells. In practice, this results in higher energy yield, a better temperature coefficient, and slower degradation over the module's lifetime.
Are the Suntech Ultra V Pro mini panels bifacial?
No, the Ultra V Pro mini series uses monofacial panels. The module generates energy only from the front side, which is a typical solution for rooftop installations where the rear side lacks sufficient reflected light exposure to justify bifacial technology.
How does MBB (multi-busbar) technology affect performance in low-light conditions?
MBB technology increases the number of current-carrying paths between cells, reducing resistive losses and improving current collection even at lower irradiance levels. As a result, Ultra V Pro mini panels maintain more stable energy production during early morning, late afternoon, and overcast days.
Add to compare