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66.675.05 vs 72.550.05 8 of 19 identical Swap Change panels

Vikram Solar PARADEA VSMDH.66.675.05 vs Vikram Solar PARADEA VSMDH.72.550.05

Vikram Solar PARADEA VSMDH.66.675.05
Vikram Solar
PARADEA VSMDH.66.675.05
675 Wp 21.73 % PERC Bifacial
Open panel page Datasheet PDF
VS
Vikram Solar
PARADEA VSMDH.72.550.05
550 Wp 21.29 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

66.675.05 leads on the differences that matter

The largest is rated power: 125 W more power. 8 of 19 comparable parameters are identical.

See all 11 differences
How alike are they
8 of 19 comparable
parameters are identical
identical differs
01

What actually differs

11 of 19 parameters
Parameter 66.675.05 72.550.05 Difference
Rated power 675 Wp 550 Wp 125 W more power
Weight 39.5 kg 32.5 kg 7.0 kg lighter
Module efficiency 21.73 % 21.29 % 0.44 pp more efficient
Short-circuit current 18.17 A 13.82 A 4.35 A apart
Module area 3.106 m² 2.583 m² 0.523 m² apart
Open-circuit voltage 46.70 V 49.70 V 3.00 V apart
Power density 217.3 Wp/m² 212.9 Wp/m² 4.4 Wp/m² higher
Current at max power 17.27 A 13.14 A 4.13 A apart
Cell count 132 144 12 cells apart
Voltage at max power 39.10 V 41.90 V 2.80 V apart
Dimensions 2384x1303x35 mm 2278x1134x30 mm 2384x1303x35 mm vs 2278x1134x30 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 (-0.350 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
66.675.05
22,052 kWh
72.550.05
17,969 kWh
Lifetime gap
4,083 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 66.675.05 72.550.05
Standard test conditions 25 °C 100.0% of rated power 675 W 550 W
Cool, bright day 40 °C 94.8% of rated power 640 W 521 W
Typical summer roof 55 °C 89.5% of rated power 604 W 492 W
Hot roof 70 °C 84.2% of rated power 569 W 463 W
03

Full specification

Parameter 66.675.05 72.550.05 Difference
Power and efficiency
Rated power 675 Wp 550 Wp +125 W for 66.675.05
Module efficiency 21.73 % 21.29 % +0.44 pp for 66.675.05
Power density 217.3 Wp/m² 212.9 Wp/m² +4.4 Wp/m² for 66.675.05
Open-circuit voltage 46.70 V 49.70 V 3.00 V apart
Voltage at max power 39.10 V 41.90 V 2.80 V apart
Short-circuit current 18.17 A 13.82 A 4.35 A apart
Current at max power 17.27 A 13.14 A 4.13 A apart
Temperature
Temperature coefficient -0.350 %/°C -0.350 %/°C Same
Mechanical
Dimensions 2384x1303x35 mm 2278x1134x30 mm 2384x1303x35 mm vs 2278x1134x30 mm
Module area 3.106 m² 2.583 m² 0.523 m² apart
Weight 39.5 kg 32.5 kg -7.0 kg for 72.550.05
Weight per kWp 58.5 kg/kWp 59.1 kg/kWp Effectively the same
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 132 144 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#7,434 vs #8,776
66.675.05 leads by 1,342 places
Power density
#7,413 vs #8,563
66.675.05 leads by 1,150 places
Heat behaviour
#10,489 vs #10,489
Tied - the same position in the database
Weight
#11,862 vs #12,099
66.675.05 leads by 237 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,222 vs #7,059
66.675.05 leads by 4,837 places
05

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06

Written summary

07

Questions about this pairing

Which panel is better: Vikram Solar PARADEA VSMDH.66.675.05 or Vikram Solar PARADEA VSMDH.72.550.05?
According to our database: Vikram Solar PARADEA VSMDH.66.675.05 has higher module efficiency (21.73% vs 21.29%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Vikram Solar PARADEA VSMDH.66.675.05 and Vikram Solar PARADEA VSMDH.72.550.05?
Vikram Solar PARADEA VSMDH.66.675.05 has a module efficiency of 21.73%, while Vikram Solar PARADEA VSMDH.72.550.05 is 21.29%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Vikram Solar PARADEA VSMDH.66.675.05 use vs Vikram Solar PARADEA VSMDH.72.550.05?
Vikram Solar PARADEA VSMDH.66.675.05 uses PERC cells; Vikram Solar PARADEA VSMDH.72.550.05 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.66.675.05 and Vikram Solar PARADEA VSMDH.72.550.05?
Vikram Solar PARADEA VSMDH.66.675.05 has a 30 years power warranty; Vikram Solar PARADEA VSMDH.72.550.05 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.66.675.05 and Vikram Solar PARADEA VSMDH.72.550.05 bifacial panels?
Both Vikram Solar PARADEA VSMDH.66.675.05 and Vikram Solar PARADEA VSMDH.72.550.05 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.