Suntech STP710S-D66-Nsh+ vs Suntech STP445S-B72/Vnh
VS
The verdict
STP710S-D66-Nsh+ leads on the differences that matter
The largest is module efficiency: 2.46 pp more efficient. 5 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 13 differencesHow alike are they
5
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
13 of 18 parameters
What actually differs
Parameter
STP710S-D66-Nsh+
STP445S-B72/Vnh
Difference
Module efficiency
22.86 %
20.40 %
2.46 pp more efficient
Temperature coefficient
-0.290 %/°C
-0.360 %/°C
0.070 %/°C better in heat
Rated power
710 Wp
445 Wp
265 W more power
Power density
228.6 Wp/m²
204.4 Wp/m²
24.1 Wp/m² higher
Performance warranty
30 yrs
25 yrs
5 yrs longer
Annual degradation
0.40 %/yr
0.55 %/yr
0.15 %/yr slower
Weight
38.5 kg
24.5 kg
14.0 kg lighter
Short-circuit current
18.48 A
11.54 A
6.94 A apart
Module area
3.106 m²
2.177 m²
0.930 m² apart
Current at max power
17.54 A
10.81 A
6.73 A apart
Cell count
132
144
12 cells apart
Bifacial
Yes
No
Yes vs No
Dimensions
2384x1303x33 mm
2095x1039x35 mm
2384x1303x33 mm vs 2095x1039x35 mm
02
What it means on a roof
Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
STP710S-D66-Nsh+
23,822 kWh
STP445S-B72/Vnh
14,422 kWh
Lifetime gap
9,400 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
STP710S-D66-Nsh+
STP445S-B72/Vnh
Standard test conditions
25 °C
100.0% of rated power
710 W
445 W
Cool, bright day
40 °C
94.6% of rated power
679 W
421 W
Typical summer roof
55 °C
89.2% of rated power
648 W
397 W
Hot roof
70 °C
83.8% of rated power
617 W
373 W
03
Full specification
Parameter
STP710S-D66-Nsh+
STP445S-B72/Vnh
Difference
Power and efficiency
Rated power
710 Wp
445 Wp
+265 W for STP710S-D66-Nsh+
Module efficiency
22.86 %
20.40 %
+2.46 pp for STP710S-D66-Nsh+
Power density
228.6 Wp/m²
204.4 Wp/m²
+24.1 Wp/m² for STP710S-D66-Nsh+
Open-circuit voltage
48.77 V
49.00 V
Effectively the same
Voltage at max power
40.48 V
41.20 V
Effectively the same
Short-circuit current
18.48 A
11.54 A
6.94 A apart
Current at max power
17.54 A
10.81 A
6.73 A apart
Temperature
Temperature coefficient
-0.290 %/°C
-0.360 %/°C
+0.070 %/°C for STP710S-D66-Nsh+
Mechanical
Dimensions
2384x1303x33 mm
2095x1039x35 mm
2384x1303x33 mm vs 2095x1039x35 mm
Module area
3.106 m²
2.177 m²
0.930 m² apart
Weight
38.5 kg
24.5 kg
-14.0 kg for STP445S-B72/Vnh
Weight per kWp
54.2 kg/kWp
55.1 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
25 yrs
+5 yrs for STP710S-D66-Nsh+
Annual degradation
0.40 %/yr
0.55 %/yr
-0.15 %/yr for STP710S-D66-Nsh+
Technology
Cell technology
TOPCon
-
Not published by Suntech
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
144
12 cells apart
Bifacial
Yes
No
Yes vs No
04
14,129 panels
Against the whole database
Efficiency
#2,591
vs
#11,680
STP710S-D66-Nsh+ leads by 9,089 places
Power density
#2,529
vs
#11,609
STP710S-D66-Nsh+ leads by 9,080 places
Heat behaviour
#2,220
vs
#12,425
STP710S-D66-Nsh+ leads by 10,205 places
Weight
#8,537
vs
#9,519
STP710S-D66-Nsh+ leads by 982 places
Warranty
#21
vs
#9,912
STP710S-D66-Nsh+ leads by 9,891 places
Overall
#883
vs
#11,533
STP710S-D66-Nsh+ leads by 10,650 places
05
Open the full database
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The same specification on paper
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Suntech STP710S-D66-Nsh+ or Suntech STP445S-B72/Vnh?
According to our database: Suntech STP710S-D66-Nsh+ has higher module efficiency (22.86% vs 20.40%); Suntech STP710S-D66-Nsh+ tolerates heat better (temp coeff -0.290%/°C vs -0.360%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Suntech STP710S-D66-Nsh+ and Suntech STP445S-B72/Vnh?
Suntech STP710S-D66-Nsh+ has a module efficiency of 22.86%, while Suntech STP445S-B72/Vnh is 20.40%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Suntech STP710S-D66-Nsh+ use vs Suntech STP445S-B72/Vnh?
Suntech STP710S-D66-Nsh+ uses TOPCon cells; Suntech STP445S-B72/Vnh uses Monocrystalline. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.
What is the warranty on Suntech STP710S-D66-Nsh+ and Suntech STP445S-B72/Vnh?
Suntech STP710S-D66-Nsh+ has a 30 years power warranty; Suntech STP445S-B72/Vnh has a 25 years power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80-87%). Product (materials) warranties are usually shorter.
Are Suntech STP710S-D66-Nsh+ and Suntech STP445S-B72/Vnh bifacial panels?
Suntech STP710S-D66-Nsh+ is bifacial (captures light from both faces); Suntech STP445S-B72/Vnh is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
Shop prices: See 16 Suntech offers
Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate. The thirty-year projection and the temperature scenarios are calculations from those figures, and each states its assumption above.