Suntech STP715S-D66-Nsh+ vs Suntech STP705S-D66-Nsh+
VS
The verdict
STP715S-D66-Nsh+ leads on the differences that matter
The largest is product warranty: 3 yrs longer. 12 of 19 comparable parameters are identical.
See all 7 differencesHow alike are they
12
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
7 of 19 parameters
What actually differs
Parameter
STP715S-D66-Nsh+
STP705S-D66-Nsh+
Difference
Product warranty
15 yrs
12 yrs
3 yrs longer
Module efficiency
23.00 %
22.70 %
0.30 pp more efficient
Temperature coefficient
-0.280 %/°C
-0.290 %/°C
0.010 %/°C better in heat
Power density
230.2 Wp/m²
227.0 Wp/m²
3.2 Wp/m² higher
Rated power
715 Wp
705 Wp
10 W more power
Weight per kWp
52.4 kg/kWp
54.6 kg/kWp
2.2 kg/kWp lighter
Weight
37.5 kg
38.5 kg
1.0 kg lighter
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
STP715S-D66-Nsh+
23,990 kWh
STP705S-D66-Nsh+
23,654 kWh
Lifetime gap
336 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
STP715S-D66-Nsh+
STP705S-D66-Nsh+
Standard test conditions
25 °C
100.0% of rated power
715 W
705 W
Cool, bright day
40 °C
95.7% of rated power
685 W
674 W
Typical summer roof
55 °C
91.3% of rated power
655 W
644 W
Hot roof
70 °C
87.0% of rated power
625 W
613 W
03
Full specification
Parameter
STP715S-D66-Nsh+
STP705S-D66-Nsh+
Difference
Power and efficiency
Rated power
715 Wp
705 Wp
+10 W for STP715S-D66-Nsh+
Module efficiency
23.00 %
22.70 %
+0.30 pp for STP715S-D66-Nsh+
Power density
230.2 Wp/m²
227.0 Wp/m²
+3.2 Wp/m² for STP715S-D66-Nsh+
Open-circuit voltage
49.06 V
48.57 V
Effectively the same
Voltage at max power
40.67 V
40.31 V
Effectively the same
Short-circuit current
18.42 A
18.43 A
Effectively the same
Current at max power
17.59 A
17.49 A
Effectively the same
Temperature
Temperature coefficient
-0.280 %/°C
-0.290 %/°C
+0.010 %/°C for STP715S-D66-Nsh+
Mechanical
Dimensions
2384x1303x33 mm
2384x1303x33 mm
Same
Module area
3.106 m²
3.106 m²
Same
Weight
37.5 kg
38.5 kg
-1.0 kg for STP715S-D66-Nsh+
Weight per kWp
52.4 kg/kWp
54.6 kg/kWp
-2.2 kg/kWp for STP715S-D66-Nsh+
Warranty and degradation
Product warranty
15 yrs
12 yrs
+3 yrs for STP715S-D66-Nsh+
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
132
Same
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#1,919
vs
#3,307
STP715S-D66-Nsh+ leads by 1,388 places
Power density
#2,018
vs
#3,361
STP715S-D66-Nsh+ leads by 1,343 places
Heat behaviour
#1,309
vs
#2,165
STP715S-D66-Nsh+ leads by 856 places
Weight
#5,979
vs
#8,959
STP715S-D66-Nsh+ leads by 2,980 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#443
vs
#1,037
STP715S-D66-Nsh+ leads by 594 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Suntech STP715S-D66-Nsh+ or Suntech STP705S-D66-Nsh+?
According to our database: Suntech STP715S-D66-Nsh+ has higher module efficiency (23.00% vs 22.70%); Suntech STP715S-D66-Nsh+ tolerates heat better (temp coeff -0.280%/°C vs -0.290%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Suntech STP715S-D66-Nsh+ and Suntech STP705S-D66-Nsh+?
Suntech STP715S-D66-Nsh+ has a module efficiency of 23.00%, while Suntech STP705S-D66-Nsh+ is 22.70%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Suntech STP715S-D66-Nsh+ use vs Suntech STP705S-D66-Nsh+?
Suntech STP715S-D66-Nsh+ uses TOPCon cells; Suntech STP705S-D66-Nsh+ uses TOPCon. 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 STP715S-D66-Nsh+ and Suntech STP705S-D66-Nsh+?
Suntech STP715S-D66-Nsh+ has a 30 years power warranty; Suntech STP705S-D66-Nsh+ has a 30 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 STP715S-D66-Nsh+ and Suntech STP705S-D66-Nsh+ bifacial panels?
Both Suntech STP715S-D66-Nsh+ and Suntech STP705S-D66-Nsh+ are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.
Shop prices: See 30 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.