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620NT60-HU/BF-DG vs 675NT66-HU/BF-DG 12 of 19 identical Swap Change panels

EGing PV EG-620NT60-HU/BF-DG vs EGing PV EG-675NT66-HU/BF-DG

EGing PV
EG-620NT60-HU/BF-DG
620 Wp 21.90 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
EGing PV
EG-675NT66-HU/BF-DG
675 Wp 21.72 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

675NT66-HU/BF-DG leads on the differences that matter

The largest is rated power: 55 W more power. 12 of 19 comparable parameters are identical.

See all 7 differences
How alike are they
12 of 19 comparable
parameters are identical
identical differs
01

What actually differs

7 of 19 parameters
Parameter 620NT60-HU/BF-DG 675NT66-HU/BF-DG Difference
Rated power 620 Wp 675 Wp 55 W more power
Weight 35.0 kg 38.3 kg 3.3 kg lighter
Module area 2.830 m² 3.106 m² 0.276 m² apart
Open-circuit voltage 43.27 V 47.22 V 3.95 V apart
Cell count 120 132 12 cells apart
Voltage at max power 36.18 V 39.43 V 3.25 V apart
Dimensions 2172x1303x35 mm 2384x1303x35 mm 2172x1303x35 mm vs 2384x1303x35 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 (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
620NT60-HU/BF-DG
20,802 kWh
675NT66-HU/BF-DG
22,648 kWh
Lifetime gap
1,846 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 620NT60-HU/BF-DG 675NT66-HU/BF-DG
Standard test conditions 25 °C 100.0% of rated power 620 W 675 W
Cool, bright day 40 °C 95.5% of rated power 592 W 645 W
Typical summer roof 55 °C 91.0% of rated power 564 W 614 W
Hot roof 70 °C 86.5% of rated power 536 W 584 W
03

Full specification

Parameter 620NT60-HU/BF-DG 675NT66-HU/BF-DG Difference
Power and efficiency
Rated power 620 Wp 675 Wp +55 W for 675NT66-HU/BF-DG
Module efficiency 21.90 % 21.72 % Effectively the same
Power density 219.1 Wp/m² 217.3 Wp/m² Effectively the same
Open-circuit voltage 43.27 V 47.22 V 3.95 V apart
Voltage at max power 36.18 V 39.43 V 3.25 V apart
Short-circuit current 18.16 A 18.14 A Effectively the same
Current at max power 17.14 A 17.12 A Effectively the same
Temperature
Temperature coefficient -0.300 %/°C -0.300 %/°C Same
Mechanical
Dimensions 2172x1303x35 mm 2384x1303x35 mm 2172x1303x35 mm vs 2384x1303x35 mm
Module area 2.830 m² 3.106 m² 0.276 m² apart
Weight 35.0 kg 38.3 kg -3.3 kg for 620NT60-HU/BF-DG
Weight per kWp 56.5 kg/kWp 56.7 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 120 132 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#6,783 vs #7,399
620NT60-HU/BF-DG leads by 616 places
Power density
#6,743 vs #7,349
620NT60-HU/BF-DG leads by 606 places
Heat behaviour
#6,093 vs #6,093
Tied - the same position in the database
Weight
#10,653 vs #10,836
620NT60-HU/BF-DG leads by 183 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,837 vs #2,173
675NT66-HU/BF-DG leads by 1,664 places
05

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The same specification on paper
06

Written summary

07

Questions about this pairing

Which panel is better: EGing PV EG-620NT60-HU/BF-DG or EGing PV EG-675NT66-HU/BF-DG?
According to our database: EGing PV EG-620NT60-HU/BF-DG has higher module efficiency (21.90% vs 21.72%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of EGing PV EG-620NT60-HU/BF-DG and EGing PV EG-675NT66-HU/BF-DG?
EGing PV EG-620NT60-HU/BF-DG has a module efficiency of 21.90%, while EGing PV EG-675NT66-HU/BF-DG is 21.72%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does EGing PV EG-620NT60-HU/BF-DG use vs EGing PV EG-675NT66-HU/BF-DG?
EGing PV EG-620NT60-HU/BF-DG uses TOPCon cells; EGing PV EG-675NT66-HU/BF-DG 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 EGing PV EG-620NT60-HU/BF-DG and EGing PV EG-675NT66-HU/BF-DG?
EGing PV EG-620NT60-HU/BF-DG has a 30 years power warranty; EGing PV EG-675NT66-HU/BF-DG 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 EGing PV EG-620NT60-HU/BF-DG and EGing PV EG-675NT66-HU/BF-DG bifacial panels?
Both EGing PV EG-620NT60-HU/BF-DG and EGing PV EG-675NT66-HU/BF-DG 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.

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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.