Vikram Solar PARADEA VSMDH.66.AAA.05-680 vs Vikram Solar PARADEA VSMDH.66.AAA.05-655
VS
The verdict
680 leads on the differences that matter
The largest is module efficiency: 0.80 pp more efficient. 13 of 19 comparable parameters are identical.
See all 6 differencesHow alike are they
13
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
6 of 19 parameters
What actually differs
Parameter
680
655
Difference
Module efficiency
21.89 %
21.09 %
0.80 pp more efficient
Power density
218.9 Wp/m²
210.9 Wp/m²
8.0 Wp/m² higher
Rated power
680 Wp
655 Wp
25 W more power
Weight per kWp
58.1 kg/kWp
60.3 kg/kWp
2.2 kg/kWp lighter
Open-circuit voltage
46.90 V
45.90 V
1.00 V apart
Voltage at max power
39.30 V
38.30 V
1.00 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
Same temp coeff. for both panels (-0.350 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
680
22,216 kWh
655
21,399 kWh
Lifetime gap
817 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
680
655
Standard test conditions
25 °C
100.0% of rated power
680 W
655 W
Cool, bright day
40 °C
94.8% of rated power
644 W
621 W
Typical summer roof
55 °C
89.5% of rated power
609 W
586 W
Hot roof
70 °C
84.2% of rated power
573 W
552 W
03
Full specification
Parameter
680
655
Difference
Power and efficiency
Rated power
680 Wp
655 Wp
+25 W for 680
Module efficiency
21.89 %
21.09 %
+0.80 pp for 680
Power density
218.9 Wp/m²
210.9 Wp/m²
+8.0 Wp/m² for 680
Open-circuit voltage
46.90 V
45.90 V
1.00 V apart
Voltage at max power
39.30 V
38.30 V
1.00 V apart
Short-circuit current
18.23 A
17.93 A
Effectively the same
Current at max power
17.31 A
17.12 A
Effectively the same
Temperature
Temperature coefficient
-0.350 %/°C
-0.350 %/°C
Same
Mechanical
Dimensions
2384x1303x35 mm
2384x1303x35 mm
Same
Module area
3.106 m²
3.106 m²
Same
Weight
39.5 kg
39.5 kg
Same
Weight per kWp
58.1 kg/kWp
60.3 kg/kWp
-2.2 kg/kWp for 680
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.50 %/yr
0.50 %/yr
Same
Technology
Cell technology
PERC
PERC
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
132
Same
Bifacial
Yes
Yes
Same
04
14,129 panels
Against the whole database
Efficiency
#6,946
vs
#9,587
680 leads by 2,641 places
Power density
#6,868
vs
#9,527
680 leads by 2,659 places
Heat behaviour
#10,489
vs
#10,489
Tied - the same position in the database
Weight
#11,647
vs
#12,518
680 leads by 871 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1,971
vs
#3,614
680 leads by 1,643 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: Vikram Solar PARADEA VSMDH.66.AAA.05-680 or Vikram Solar PARADEA VSMDH.66.AAA.05-655?
According to our database: Vikram Solar PARADEA VSMDH.66.AAA.05-680 has higher module efficiency (21.89% vs 21.09%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Vikram Solar PARADEA VSMDH.66.AAA.05-680 and Vikram Solar PARADEA VSMDH.66.AAA.05-655?
Vikram Solar PARADEA VSMDH.66.AAA.05-680 has a module efficiency of 21.89%, while Vikram Solar PARADEA VSMDH.66.AAA.05-655 is 21.09%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Vikram Solar PARADEA VSMDH.66.AAA.05-680 use vs Vikram Solar PARADEA VSMDH.66.AAA.05-655?
Vikram Solar PARADEA VSMDH.66.AAA.05-680 uses PERC cells; Vikram Solar PARADEA VSMDH.66.AAA.05-655 uses PERC. 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 Vikram Solar PARADEA VSMDH.66.AAA.05-680 and Vikram Solar PARADEA VSMDH.66.AAA.05-655?
Vikram Solar PARADEA VSMDH.66.AAA.05-680 has a 30 years power warranty; Vikram Solar PARADEA VSMDH.66.AAA.05-655 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 Vikram Solar PARADEA VSMDH.66.AAA.05-680 and Vikram Solar PARADEA VSMDH.66.AAA.05-655 bifacial panels?
Both Vikram Solar PARADEA VSMDH.66.AAA.05-680 and Vikram Solar PARADEA VSMDH.66.AAA.05-655 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.
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.