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Suntech STP700S-D66-Nsh+
Suntech Brand review

STP700S-D66-Nsh+

700 Wp TOPCon Bifacial 80%
ComparePV verdict

Middle of its segment, modest efficiency

Rank 936 of 14,005
Compare panels Datasheet PDF
Power (Wp)
700
Weak · bottom 7%
Efficiency (%)
22.50
Weak · bottom 5%
Density (Wp/m²)
225.3
Weak · bottom 7%
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
37.5
Typical · median 38.0 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Suntech Ultra X Pro Plus (STPXxxS-D66-Nsh+) series is designed for installations where maximizing energy yield from every meter of construction and stable operation in demanding conditions are paramount. The application of N-type TOPCon cells helps minimize losses over time and maintain high efficiency across seasons, directly translating into predictable energy production and a better project economics. Modules in the bifacial version can utilize reflected light from the ground, genuinely increasing yields where clear surfaces or appropriate stilt geometry can be planned. Another key feature is low sensitivity to high temperatures, which supports energy production on hot days when many competitive solutions significantly lose performance. For investors, the long power warranty is also crucial, facilitating risk and financing planning. This is an excellent choice for PV farms, large industrial rooftops, and projects aimed at reducing LCOE while increasing yield without expanding the surface area.

Ranking

420 panels in the segment TOPCon 700-750 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.50% 23.00% Weak · bottom 5% 4,222
Power density 225.3 230.2 Weak · bottom 7% 3,989
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 53.6 52.9 Typical 7,586
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 · 2 caution
Best for

Utility-scale, commercial and hot-climate.

Not ideal for

Tight roof space and roofs where every square metre has to count.

Watch-outs
22.50% module efficiency

Bottom 5% of the TOPCon 700-750 W segment, against a median of 23.00%. Ranked 4,222nd in the whole database.

225.3 watts per square metre

Bottom 7% of the TOPCon 700-750 W segment, against a median of 230.2. Ranked 3,989th in the whole database.

Notes from the database
  • Efficiency of 22.5% matches the TOPCon 700-750W median
  • At 225.3 W/m², this panel generates 4.9 W/m² less per unit area than TOPCon 700-750W median (230.2 W/m²)
  • Temperature coefficient of -0.29%/°C matches the TOPCon 700-750W median
  • Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
  • Ranked #4222 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 700 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.50 % Weak Segment median 23.00%
Vmpp · Impp 39.65 V · 17.66 A Operating point at max power
Voc · Isc 47.65 V · 18.67 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2384×1303×35 mm · 3.11 m² of roof
Weight 37.5 kg Typical Typical · median 38.0 kg
Cells 132 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.250 · 0.046 %/°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 87.4 % Equals 612 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 700 Wp appear here. The rest cover the whole series.

Current-Voltage (I-V) and Power-Voltage (P-V) Curves Current-Voltage (I-V) and Power-Voltage (P-V) Curves 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
-0.290 %/°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 STP700S-D66-Nsh+ 700 W 22.50% -0.290 37.5 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg -50 W, lighter, +2.7 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, lighter, +2.7 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, lighter, +2.5 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg Cooler, lighter, +2.5 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg Cooler, lighter, +2.4 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg -30 W, lighter, +2.3 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg -30 W, lighter, +2.3 pp
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg -30 W, lighter, +2.3 pp
STP650S-D66/Pmh+ 650 W 20.90% -0.340 37.5 kg -50 W, hotter, -1.6 pp
STP655S-D66/Wmh 655 W 21.10% -0.340 33.5 kg Hotter, -1.4 pp, -5 yr warranty
STP660S-D66/Wmh 660 W 21.20% -0.340 33.5 kg Hotter, -1.3 pp, -5 yr warranty
STP665S-D66/Wmh 665 W 21.40% -0.340 33.5 kg Hotter, -1.1 pp, -5 yr warranty
STP670S-D66/Wmh 670 W 21.60% -0.340 33.5 kg Hotter, -0.9 pp, -5 yr warranty
STP675S-D66/Wmh 675 W 21.70% -0.340 33.5 kg Hotter, -0.8 pp, -5 yr warranty
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +105 W, cooler, +2.6 pp
AIKO-A800-GRH78Dw 800 W 24.90% -0.260 39.8 kg +100 W, cooler, +2.4 pp

Found 1390 panels of the same or similar size to this one, within ±10 mm. See them here Found 1400 panels of the same or similar size to this one, within ±25 mm. See them here Found 1400 panels of the same or similar size to this one, within ±50 mm. See them here Found 1432 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 X Pro Plus panel?
The Ultra X Pro Plus series (STPXXXS-D66-Nsh+) reaches up to 710 Wp. This high per-module power output reduces the number of panels needed to reach a target system capacity, lowering costs for racking, cabling, and installation labor, especially in large utility-scale and industrial installations.
How does the TOPCon cell technology in the Ultra X Pro Plus differ from standard PERC cells?
N-type TOPCon cells feature an additional passivation layer that reduces carrier recombination and energy losses. As a result, Ultra X Pro Plus modules maintain higher efficiency over time and degrade more slowly than typical P-type PERC panels, translating into greater long-term energy yield over the system's operating life.
Do the bifacial panels in the Ultra X Pro Plus series require special mounting?
No special racking is required, but to make the most of the bifacial gain, it helps to install the panels above a light-colored or reflective surface, such as white gravel, a membrane roof, or grass, and to leave adequate clearance below the module. This allows the rear side to capture reflected light, boosting total system yield.
How do Ultra X Pro Plus panels perform in high summer temperatures?
The Ultra X Pro Plus series has a low temperature coefficient, meaning less power loss on hot days compared to many competing products. For installers and investors, this results in more stable and predictable energy production during summer, when panel heating is at its peak.
What warranty comes with the Suntech Ultra X Pro Plus panels?
The manufacturer offers a 15-year product warranty and a 30-year linear power output warranty. The long power warranty makes it easier for investors to plan return on investment and assess financing risk, since it guarantees a minimum level of energy output over most of the system's operating lifetime.
Is Suntech a Tier 1 manufacturer, and where are Ultra X Pro Plus panels made?
Yes, Suntech is classified as a Tier 1 manufacturer, reflecting financial stability and extensive experience in solar module production. The company is headquartered in China. Tier 1 status matters for project financing, as banks and insurers often require components from recognized manufacturers to approve loans for PV installations.
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