Suntech STP720S-D66-Nsh+ vs Suntech STP615S-H66-Nsh+
VS
The verdict
STP720S-D66-Nsh+ leads on the differences that matter
The largest is rated power: 105 W more power. 11 of 19 comparable parameters are identical.
See all 8 differencesHow alike are they
11
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
8 of 19 parameters
What actually differs
Parameter
STP720S-D66-Nsh+
STP615S-H66-Nsh+
Difference
Rated power
720 Wp
615 Wp
105 W more power
Weight
37.5 kg
33.1 kg
4.4 kg lighter
Module efficiency
23.20 %
22.80 %
0.40 pp more efficient
Short-circuit current
18.46 A
15.92 A
2.54 A apart
Module area
3.106 m²
2.701 m²
0.405 m² apart
Power density
231.8 Wp/m²
227.7 Wp/m²
4.1 Wp/m² higher
Current at max power
17.62 A
15.12 A
2.50 A apart
Dimensions
2384x1303x33 mm
2382x1134x30 mm
2384x1303x33 mm vs 2382x1134x30 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
Same temp coeff. for both panels (-0.280 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
STP720S-D66-Nsh+
24,157 kWh
STP615S-H66-Nsh+
20,634 kWh
Lifetime gap
3,523 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
STP720S-D66-Nsh+
STP615S-H66-Nsh+
Standard test conditions
25 °C
100.0% of rated power
720 W
615 W
Cool, bright day
40 °C
95.8% of rated power
690 W
589 W
Typical summer roof
55 °C
91.6% of rated power
660 W
563 W
Hot roof
70 °C
87.4% of rated power
629 W
538 W
03
Full specification
Parameter
STP720S-D66-Nsh+
STP615S-H66-Nsh+
Difference
Power and efficiency
Rated power
720 Wp
615 Wp
+105 W for STP720S-D66-Nsh+
Module efficiency
23.20 %
22.80 %
+0.40 pp for STP720S-D66-Nsh+
Power density
231.8 Wp/m²
227.7 Wp/m²
+4.1 Wp/m² for STP720S-D66-Nsh+
Open-circuit voltage
49.26 V
48.70 V
Effectively the same
Voltage at max power
40.87 V
40.70 V
Effectively the same
Short-circuit current
18.46 A
15.92 A
2.54 A apart
Current at max power
17.62 A
15.12 A
2.50 A apart
Temperature
Temperature coefficient
-0.280 %/°C
-0.280 %/°C
Same
Mechanical
Dimensions
2384x1303x33 mm
2382x1134x30 mm
2384x1303x33 mm vs 2382x1134x30 mm
Module area
3.106 m²
2.701 m²
0.405 m² apart
Weight
37.5 kg
33.1 kg
-4.4 kg for STP615S-H66-Nsh+
Weight per kWp
52.1 kg/kWp
53.8 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
15 yrs
15 yrs
Same
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
#1,306
vs
#2,714
STP720S-D66-Nsh+ leads by 1,408 places
Power density
#1,347
vs
#3,077
STP720S-D66-Nsh+ leads by 1,730 places
Heat behaviour
#1,309
vs
#1,309
Tied - the same position in the database
Weight
#5,516
vs
#7,888
STP720S-D66-Nsh+ leads by 2,372 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#330
vs
#2,350
STP720S-D66-Nsh+ leads by 2,020 places
05
Open the full database
More useful comparisons
Same series, other bin
Suntech STP720S-D66-Nsh+ vs Suntech STP735S-D66-Nsh+
3 differences, the largest is module efficiency
Same series, other bin
Suntech STP720S-D66-Nsh+ vs Suntech STP730S-D66-Nsh+
3 differences, the largest is module efficiency
Same series, other bin
Suntech STP720S-D66-Nsh+ vs Suntech STP725S-D66-Nsh+
The same specification on paper
Same series, other bin
Suntech STP720S-D66-Nsh+ vs Suntech STP715S-D66-Nsh+
One difference: module efficiency
Same series, other bin
Suntech STP720S-D66-Nsh+ vs Suntech STP710S-D66-Nsh+
7 differences, the largest is product warranty
Same series, other bin
Suntech STP720S-D66-Nsh+ vs Suntech STP705S-D66-Nsh+
7 differences, the largest is module efficiency
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Suntech STP720S-D66-Nsh+ or Suntech STP615S-H66-Nsh+?
According to our database: Suntech STP720S-D66-Nsh+ has higher module efficiency (23.20% vs 22.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Suntech STP720S-D66-Nsh+ and Suntech STP615S-H66-Nsh+?
Suntech STP720S-D66-Nsh+ has a module efficiency of 23.20%, while Suntech STP615S-H66-Nsh+ is 22.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Suntech STP720S-D66-Nsh+ use vs Suntech STP615S-H66-Nsh+?
Suntech STP720S-D66-Nsh+ uses TOPCon cells; Suntech STP615S-H66-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 STP720S-D66-Nsh+ and Suntech STP615S-H66-Nsh+?
Suntech STP720S-D66-Nsh+ has a 30 years power warranty; Suntech STP615S-H66-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 STP720S-D66-Nsh+ and Suntech STP615S-H66-Nsh+ bifacial panels?
Both Suntech STP720S-D66-Nsh+ and Suntech STP615S-H66-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.