Suntech STP670S-D66/Pmh+ vs Suntech STP700S-D66-Nsh+
VS
The verdict
STP700S-D66-Nsh+ leads on the differences that matter
The largest is module efficiency: 0.90 pp more efficient. 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
STP670S-D66/Pmh+
STP700S-D66-Nsh+
Difference
Module efficiency
21.60 %
22.50 %
0.90 pp more efficient
Temperature coefficient
-0.340 %/°C
-0.290 %/°C
0.050 %/°C better in heat
Power density
215.7 Wp/m²
225.3 Wp/m²
9.7 Wp/m² higher
Rated power
670 Wp
700 Wp
30 W more power
Annual degradation
0.45 %/yr
0.40 %/yr
0.05 %/yr slower
Weight per kWp
56.0 kg/kWp
53.6 kg/kWp
2.4 kg/kWp lighter
Open-circuit voltage
46.45 V
47.65 V
1.20 V apart
Voltage at max power
38.45 V
39.65 V
1.20 V apart
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
STP670S-D66/Pmh+
22,064 kWh
STP700S-D66-Nsh+
23,486 kWh
Lifetime gap
1,422 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
STP670S-D66/Pmh+
STP700S-D66-Nsh+
Standard test conditions
25 °C
100.0% of rated power
670 W
700 W
Cool, bright day
40 °C
94.9% of rated power
636 W
670 W
Typical summer roof
55 °C
89.8% of rated power
602 W
639 W
Hot roof
70 °C
84.7% of rated power
567 W
609 W
03
Full specification
Parameter
STP670S-D66/Pmh+
STP700S-D66-Nsh+
Difference
Power and efficiency
Rated power
670 Wp
700 Wp
+30 W for STP700S-D66-Nsh+
Module efficiency
21.60 %
22.50 %
+0.90 pp for STP700S-D66-Nsh+
Power density
215.7 Wp/m²
225.3 Wp/m²
+9.7 Wp/m² for STP700S-D66-Nsh+
Open-circuit voltage
46.45 V
47.65 V
1.20 V apart
Voltage at max power
38.45 V
39.65 V
1.20 V apart
Short-circuit current
18.43 A
18.67 A
Effectively the same
Current at max power
17.43 A
17.66 A
Effectively the same
Temperature
Temperature coefficient
-0.340 %/°C
-0.290 %/°C
+0.050 %/°C for STP700S-D66-Nsh+
Mechanical
Dimensions
2384x1303x35 mm
2384x1303x35 mm
Same
Module area
3.106 m²
3.106 m²
Same
Weight
37.5 kg
37.5 kg
Same
Weight per kWp
56.0 kg/kWp
53.6 kg/kWp
-2.4 kg/kWp for STP700S-D66-Nsh+
Warranty and degradation
Product warranty
15 yrs
15 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.45 %/yr
0.40 %/yr
-0.05 %/yr for STP700S-D66-Nsh+
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
#7,652
vs
#4,222
STP700S-D66-Nsh+ leads by 3,430 places
Power density
#7,644
vs
#3,989
STP700S-D66-Nsh+ leads by 3,655 places
Heat behaviour
#8,778
vs
#2,165
STP700S-D66-Nsh+ leads by 6,613 places
Weight
#10,312
vs
#7,586
STP700S-D66-Nsh+ leads by 2,726 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1,986
vs
#936
STP700S-D66-Nsh+ leads by 1,050 places
05
Open the full database
More useful comparisons
Same series, other bin
Suntech STP670S-D66/Pmh+ vs Suntech STP675S-D66/Wmh
6 differences, the largest is performance warranty
Same series, other bin
Suntech STP670S-D66/Pmh+ vs Suntech STP670S-D66/Wmh
6 differences, the largest is performance warranty
Same series, other bin
Suntech STP670S-D66/Pmh+ vs Suntech STP665S-D66/Wmh
7 differences, the largest is performance warranty
Same series, other bin
Suntech STP670S-D66/Pmh+ vs Suntech STP665S-D66/Pmh+
One difference: module efficiency
Same series, other bin
Suntech STP670S-D66/Pmh+ vs Suntech STP660S-D66/Wmh
9 differences, the largest is performance warranty
Same series, other bin
Suntech STP670S-D66/Pmh+ vs Suntech STP660S-D66/Pmh+
3 differences, the largest is module efficiency
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Suntech STP670S-D66/Pmh+ or Suntech STP700S-D66-Nsh+?
According to our database: Suntech STP700S-D66-Nsh+ has higher module efficiency (22.50% vs 21.60%); Suntech STP700S-D66-Nsh+ tolerates heat better (temp coeff -0.290%/°C vs -0.340%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Suntech STP670S-D66/Pmh+ and Suntech STP700S-D66-Nsh+?
Suntech STP670S-D66/Pmh+ has a module efficiency of 21.60%, while Suntech STP700S-D66-Nsh+ is 22.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Suntech STP670S-D66/Pmh+ use vs Suntech STP700S-D66-Nsh+?
Suntech STP670S-D66/Pmh+ uses TOPCon cells; Suntech STP700S-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 STP670S-D66/Pmh+ and Suntech STP700S-D66-Nsh+?
Suntech STP670S-D66/Pmh+ has a 30 years power warranty; Suntech STP700S-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 STP670S-D66/Pmh+ and Suntech STP700S-D66-Nsh+ bifacial panels?
Both Suntech STP670S-D66/Pmh+ and Suntech STP700S-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 29 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.