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HUV vs HU/BF-DG 14 of 19 identical Swap Change panels

EGing PV EG-670M66-HUV vs EGing PV EG-670M66-HU/BF-DG

EGing PV EG-670M66-HUV
EGing PV
EG-670M66-HUV
670 Wp 21.56 % PERC
Open panel page Datasheet PDF
VS
EGing PV
EG-670M66-HU/BF-DG
670 Wp 21.56 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

5 differences, and they point both ways

The largest is performance warranty: 5 yrs longer. 14 of 19 comparable parameters are identical.

See all 5 differences
How alike are they
14 of 19 comparable
parameters are identical
identical differs
01

What actually differs

5 of 19 parameters
Parameter HUV HU/BF-DG Difference
Performance warranty 25 yrs 30 yrs 5 yrs longer
Weight 32.9 kg 38.3 kg 5.4 kg lighter
Weight per kWp 49.1 kg/kWp 57.2 kg/kWp 8.1 kg/kWp lighter
Annual degradation 0.55 %/yr 0.45 %/yr 0.10 %/yr slower
Bifacial No Yes No vs Yes
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.
HUV
21,714 kWh
HU/BF-DG
22,064 kWh
Lifetime gap
350 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario HUV HU/BF-DG
Standard test conditions 25 °C 100.0% of rated power 670 W 670 W
Cool, bright day 40 °C 94.9% of rated power 636 W 636 W
Typical summer roof 55 °C 89.8% of rated power 602 W 602 W
Hot roof 70 °C 84.7% of rated power 567 W 567 W
03

Full specification

Parameter HUV HU/BF-DG Difference
Power and efficiency
Rated power 670 Wp 670 Wp Same
Module efficiency 21.56 % 21.56 % Same
Power density 215.7 Wp/m² 215.7 Wp/m² Same
Open-circuit voltage 45.97 V 46.20 V Effectively the same
Voltage at max power 38.16 V 38.38 V Effectively the same
Short-circuit current 18.61 A 18.51 A Effectively the same
Current at max power 17.56 A 17.46 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 32.9 kg 38.3 kg -5.4 kg for HUV
Weight per kWp 49.1 kg/kWp 57.2 kg/kWp -8.1 kg/kWp for HUV
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 25 yrs 30 yrs +5 yrs for HU/BF-DG
Annual degradation 0.55 %/yr 0.45 %/yr -0.10 %/yr for HU/BF-DG
Technology
Cell technology PERC PERC Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial No Yes No vs Yes
04

Against the whole database

14,005 panels
Efficiency
#7,774 vs #7,774
Tied - the same position in the database
Power density
#7,644 vs #7,644
Tied - the same position in the database
Heat behaviour
#8,778 vs #8,778
Tied - the same position in the database
Weight
#2,745 vs #11,112
HUV leads by 8,367 places
Warranty
#9,798 vs #21
HU/BF-DG leads by 9,777 places
Overall
#3,378 vs #2,497
HU/BF-DG leads by 881 places
05

More useful comparisons

Open the full database
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06

Written summary

07

Questions about this pairing

Which panel is better: EGing PV EG-670M66-HUV or EGing PV EG-670M66-HU/BF-DG?
According to our database: both panels are closely matched on key specs - the decision often comes down to price and local availability. See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of EGing PV EG-670M66-HUV and EGing PV EG-670M66-HU/BF-DG?
EGing PV EG-670M66-HUV has a module efficiency of 21.56%, while EGing PV EG-670M66-HU/BF-DG is 21.56%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does EGing PV EG-670M66-HUV use vs EGing PV EG-670M66-HU/BF-DG?
EGing PV EG-670M66-HUV uses PERC cells; EGing PV EG-670M66-HU/BF-DG 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 EGing PV EG-670M66-HUV and EGing PV EG-670M66-HU/BF-DG?
EGing PV EG-670M66-HUV has a 25 years power warranty; EGing PV EG-670M66-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-670M66-HUV and EGing PV EG-670M66-HU/BF-DG bifacial panels?
EGing PV EG-670M66-HU/BF-DG is bifacial (captures light from both faces); EGing PV EG-670M66-HUV is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Shop prices: See 3 EGing PV 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.