Suntech STP675S-D66/Wmh vs Suntech STP670S-D66/Wmh
VS
The verdict
Identical on every published parameter
All 19 comparable parameters agree. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from.
How alike are they
19
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
0 of 19 parameters
What actually differs
Every comparable parameter agrees. The full specification is below.
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 (-0.340 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
STP675S-D66/Wmh
21,876 kWh
STP670S-D66/Wmh
21,714 kWh
Lifetime gap
162 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
STP675S-D66/Wmh
STP670S-D66/Wmh
Standard test conditions
25 °C
100.0% of rated power
675 W
670 W
Cool, bright day
40 °C
94.9% of rated power
641 W
636 W
Typical summer roof
55 °C
89.8% of rated power
606 W
602 W
Hot roof
70 °C
84.7% of rated power
572 W
567 W
03
Full specification
Parameter
STP675S-D66/Wmh
STP670S-D66/Wmh
Difference
Power and efficiency
Rated power
675 Wp
670 Wp
Effectively the same
Module efficiency
21.70 %
21.60 %
Effectively the same
Power density
217.3 Wp/m²
215.7 Wp/m²
Effectively the same
Open-circuit voltage
46.65 V
46.45 V
Effectively the same
Voltage at max power
38.65 V
38.45 V
Effectively the same
Short-circuit current
18.47 A
18.43 A
Effectively the same
Current at max power
17.46 A
17.43 A
Effectively the same
Temperature
Temperature coefficient
-0.340 %/°C
-0.340 %/°C
Same
Mechanical
Dimensions
2384x1303x35 mm
2384x1303x35 mm
Same
Module area
3.106 m²
3.106 m²
Same
Weight
33.5 kg
33.5 kg
Same
Weight per kWp
49.6 kg/kWp
50.0 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
25 yrs
25 yrs
Same
Annual degradation
0.55 %/yr
0.55 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
132
Same
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#7,421
vs
#7,652
STP675S-D66/Wmh leads by 231 places
Power density
#7,349
vs
#7,644
STP675S-D66/Wmh leads by 295 places
Heat behaviour
#8,778
vs
#8,778
Tied - the same position in the database
Weight
#3,176
vs
#3,317
STP675S-D66/Wmh leads by 141 places
Warranty
#9,798
vs
#9,798
Tied - the same position in the database
Overall
#3,026
vs
#3,364
STP675S-D66/Wmh leads by 338 places
05
Open the full database
More useful comparisons
Same series, other bin
Suntech STP675S-D66/Wmh vs Suntech STP700S-D66-Nsh+
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Same series, other bin
Suntech STP675S-D66/Wmh vs Suntech STP670S-D66/Pmh+
6 differences, the largest is performance warranty
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Suntech STP675S-D66/Wmh vs Suntech STP665S-D66/Wmh
3 differences, the largest is module efficiency
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Suntech STP675S-D66/Wmh vs Suntech STP665S-D66/Pmh+
9 differences, the largest is performance warranty
Same series, other bin
Suntech STP675S-D66/Wmh vs Suntech STP660S-D66/Wmh
3 differences, the largest is module efficiency
Same series, other bin
Suntech STP675S-D66/Wmh vs Suntech STP660S-D66/Pmh+
9 differences, the largest is performance warranty
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Suntech STP675S-D66/Wmh or Suntech STP670S-D66/Wmh?
According to our database: Suntech STP675S-D66/Wmh has higher module efficiency (21.70% vs 21.60%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Suntech STP675S-D66/Wmh and Suntech STP670S-D66/Wmh?
Suntech STP675S-D66/Wmh has a module efficiency of 21.70%, while Suntech STP670S-D66/Wmh is 21.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Suntech STP675S-D66/Wmh use vs Suntech STP670S-D66/Wmh?
Suntech STP675S-D66/Wmh uses TOPCon cells; Suntech STP670S-D66/Wmh 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 STP675S-D66/Wmh and Suntech STP670S-D66/Wmh?
Suntech STP675S-D66/Wmh has a 25 years power warranty; Suntech STP670S-D66/Wmh 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.
Shop prices: See 22 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.