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Suntech STP505S-H54-Nfb+
Suntech Brand review

STP505S-H54-Nfb+

505 Wp TOPCon
ComparePV verdict

Strong in heat, no clear weak spot

Rank 4,015 of 14,005
Compare panels Datasheet PDF
Power (Wp)
505
Typical for its class
Efficiency (%)
22.70
Typical · median 22.73%
Density (Wp/m²)
227.1
Typical · median 227.4
Temp (%/°C)
-0.280
Strong · top 10%
Weight (kg)
23.5
Strong · 3.5 kg below median
Warranty (yrs)
30
Typical · median 30 yrs

Ultra T 2.0 is a PV module series built for investors who care about more than just efficiency, valuing the visual appeal of an installation on a roof or facade just as much. The N-type TOPCon technology in a half-cell layout reduces resistive losses and keeps energy output stable even under elevated module operating temperatures. The distinctive, uniformly black appearance of the components allows the panels to blend harmoniously into building architecture, making this series a natural choice for residential projects where aesthetics matter as much as technical parameters. A double-glass construction with an anti-reflective coated front glass, combined with multi-busbar technology, improves light utilization and current collection, translating into greater long-term reliability. The series also stands out for its resistance to demanding environmental conditions, backed by certifications for salt mist, ammonia, and dust and sand resistance, making it a solid choice for agricultural and coastal sites. A durable anodized aluminum frame together with certified load-bearing capability ensures mechanical stability even in regions with heavy snow and wind loads, while the long-term power warranty provides confidence in the investment for decades to come.

Ranking

432 panels in the segment TOPCon 500-550 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.70% 22.73% Typical 3,307
Power density 227.1 227.4 Typical 3,312
Temperature coefficient -0.280 -0.290 Strong · top 10% 1,309
Weight per kWp 46.5 52.4 Strong · top 16% 1,199
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

2 positive · 0 caution
Best for

Commercial and utility-scale.

Strengths
-0.280 %/°C temperature coefficient

Top 10% of the TOPCon 500-550 W segment, against a median of -0.290. Ranked 1,309th in the whole database.

46.5 kg per kWp

Top 16% of the TOPCon 500-550 W segment, against a median of 52.4.

Notes from the database
  • Efficiency of 22.7% matches the TOPCon 500-550W median
  • Power density of 227.1 W/m² matches the TOPCon 500-550W median
  • At -0.28%/°C, hot weather performance is typical for TOPCon 500-550W panels
  • Weight of 23.5 kg (3.5 kg below TOPCon 500-550W median of 27.0 kg) allows easier transport and roof mounting
  • Ranked #3307 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 505 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.70 % Typical Segment median 22.73%
Vmpp · Impp 34.17 V · 14.78 A Operating point at max power
Voc · Isc 40.55 V · 15.68 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1961×1134×30 mm · 2.22 m² of roof
Weight 23.5 kg Strong Strong · 3.5 kg below median
Cells 108 · TOPCon Monocrystalline
Coefficient Pmax -0.280 %/°C Strong top 10% of its segment
Coefficient Voc · Isc -0.240 · 0.043 %/°C
NOCT 42 °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 87.4 % Equals 441 W guaranteed
Degradation 1.00 → 0.40 % 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
-0.280 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Suntech STP505S-H54-Nfb+ 505 W 22.70% -0.280 23.5 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, +2.3 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +2.1 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, +2.0 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +50 W, cooler, +1.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, lighter, +1.8 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, +1.8 pp
STP490S-H54-Nfb+ 490 W 22.00% -0.290 23.5 kg -15 W, -0.7 pp
STP495S-H54-Nfb+ 495 W 22.30% -0.280 23.5 kg -10 W, -0.4 pp
STP500S-H54-Nfb+ 500 W 22.50% -0.280 23.5 kg Very close match
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +55 W, cooler, +2.1 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg +45 W, lighter, +1.7 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg +35 W, cooler, +1.7 pp
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg +35 W, cooler, +1.7 pp
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg +40 W, heavier, +1.6 pp
LR7-60HVH-545M 545 W 24.20% -0.260 25.0 kg +40 W, cooler, +1.5 pp

Found 471 panels of the same or similar size to this one, within ±10 mm. See them here Found 508 panels of the same or similar size to this one, within ±25 mm. See them here Found 662 panels of the same or similar size to this one, within ±50 mm. See them here Found 1471 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is the maximum power output of the Suntech Ultra T 2.0 panel?
The Ultra T 2.0 series reaches a maximum power output of up to 735 Wp, placing it among the highest-output monocrystalline modules currently available. This high output comes from large-format half-cut TOPCon cells combined with multi-busbar technology, which reduce current losses and improve energy harvesting across the panel surface. As a result, fewer modules are needed to reach a given system size, lowering mounting and racking costs.
How does the N-type TOPCon technology in the Ultra T 2.0 differ from older PERC panels?
TOPCon is an N-type cell technology that, unlike common PERC cells, is not boron-doped, so Ultra T 2.0 panels experience virtually no LID-related power loss in the first months of operation. A lower temperature coefficient (around -0.29%/°C) means smaller output drops on hot days compared to standard PERC modules. In practice, this results in higher and more stable annual energy yield.
Do Ultra T 2.0 panels perform well in summer, at high roof temperatures?
Yes, thanks to TOPCon technology, Ultra T 2.0 panels have a low power temperature coefficient (around -0.29%/°C), meaning they lose less output than standard PERC panels as module temperature rises above 25°C. This matters especially in summer, when roof surface temperatures can exceed 60-70°C. As a result, the system maintains higher energy output on the hottest days, when demand for electricity is typically highest.
What warranty comes with the Suntech Ultra T 2.0 panels?
The manufacturer provides a 25-year product warranty along with a 30-year linear power output warranty. This means that after 30 years of operation, the panel should still generate no less than about 87% of its original rated power, with less than 1% degradation in the first year alone. This long warranty period makes the Ultra T 2.0 a solid choice for investors planning installations designed to last for decades without module replacement.
Are Ultra T 2.0 panels suitable for coastal installations or agricultural buildings?
Yes, the Ultra T 2.0 series holds certifications for salt mist, ammonia, and dust/sand resistance, confirming its durability under harsh environmental conditions. Salt mist resistance is essential for coastal installations, where salty air accelerates component corrosion, while ammonia resistance matters for installations on livestock buildings and other agricultural sites. This makes the panels a safe choice for both types of applications.
Can Ultra T 2.0 panels withstand heavy snow and strong wind loads?
Yes, Ultra T 2.0 modules feature a sturdy anodized aluminum frame with certified load ratings, confirming their mechanical stability under strong wind and heavy snow loads. The double-glass construction further increases panel rigidity and resistance to deflection compared to standard backsheet modules. These parameters matter when designing installations in mountainous regions or areas with high snow load standards, where choosing the right mounting structure is critical.
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