EGing PV EG-590M60-HU/BF-DG vs EGing PV EG-670M66-HUV
VS
The verdict
670M66-HUV leads on the differences that matter
The largest is module efficiency: 0.72 pp more efficient. 6 of 19 comparable parameters are identical.
See all 13 differencesHow alike are they
6
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
13 of 19 parameters
What actually differs
Parameter
590M60-HU/BF-DG
670M66-HUV
Difference
Module efficiency
20.84 %
21.56 %
0.72 pp more efficient
Rated power
590 Wp
670 Wp
80 W more power
Performance warranty
30 yrs
25 yrs
5 yrs longer
Weight per kWp
59.3 kg/kWp
49.1 kg/kWp
10.2 kg/kWp lighter
Power density
208.5 Wp/m²
215.7 Wp/m²
7.2 Wp/m² higher
Annual degradation
0.45 %/yr
0.55 %/yr
0.10 %/yr slower
Open-circuit voltage
41.31 V
45.97 V
4.66 V apart
Module area
2.830 m²
3.106 m²
0.276 m² apart
Weight
35.0 kg
32.9 kg
2.1 kg lighter
Cell count
120
132
12 cells apart
Voltage at max power
34.21 V
38.16 V
3.95 V apart
Bifacial
Yes
No
Yes vs No
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 (-0.340 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
590M60-HU/BF-DG
19,429 kWh
670M66-HUV
21,714 kWh
Lifetime gap
2,285 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
590M60-HU/BF-DG
670M66-HUV
Standard test conditions
25 °C
100.0% of rated power
590 W
670 W
Cool, bright day
40 °C
94.9% of rated power
560 W
636 W
Typical summer roof
55 °C
89.8% of rated power
530 W
602 W
Hot roof
70 °C
84.7% of rated power
500 W
567 W
03
Full specification
Parameter
590M60-HU/BF-DG
670M66-HUV
Difference
Power and efficiency
Rated power
590 Wp
670 Wp
+80 W for 670M66-HUV
Module efficiency
20.84 %
21.56 %
+0.72 pp for 670M66-HUV
Power density
208.5 Wp/m²
215.7 Wp/m²
+7.2 Wp/m² for 670M66-HUV
Open-circuit voltage
41.31 V
45.97 V
4.66 V apart
Voltage at max power
34.21 V
38.16 V
3.95 V apart
Short-circuit current
18.30 A
18.61 A
Effectively the same
Current at max power
17.25 A
17.56 A
Effectively the same
Temperature
Temperature coefficient
-0.340 %/°C
-0.340 %/°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
32.9 kg
-2.1 kg for 670M66-HUV
Weight per kWp
59.3 kg/kWp
49.1 kg/kWp
-10.2 kg/kWp for 670M66-HUV
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
25 yrs
+5 yrs for 590M60-HU/BF-DG
Annual degradation
0.45 %/yr
0.55 %/yr
-0.10 %/yr for 590M60-HU/BF-DG
Technology
Cell technology
PERC
PERC
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
120
132
12 cells apart
Bifacial
Yes
No
Yes vs No
04
14,005 panels
Against the whole database
Efficiency
#10,421
vs
#7,774
670M66-HUV leads by 2,647 places
Power density
#10,359
vs
#7,644
670M66-HUV leads by 2,715 places
Heat behaviour
#8,778
vs
#8,778
Tied - the same position in the database
Weight
#12,099
vs
#2,745
670M66-HUV leads by 9,354 places
Warranty
#21
vs
#9,798
590M60-HU/BF-DG leads by 9,777 places
Overall
#6,044
vs
#3,378
670M66-HUV leads by 2,666 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: EGing PV EG-590M60-HU/BF-DG or EGing PV EG-670M66-HUV?
According to our database: EGing PV EG-670M66-HUV has higher module efficiency (21.56% vs 20.84%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of EGing PV EG-590M60-HU/BF-DG and EGing PV EG-670M66-HUV?
EGing PV EG-590M60-HU/BF-DG has a module efficiency of 20.84%, while EGing PV EG-670M66-HUV 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-590M60-HU/BF-DG use vs EGing PV EG-670M66-HUV?
EGing PV EG-590M60-HU/BF-DG uses PERC cells; EGing PV EG-670M66-HUV 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-590M60-HU/BF-DG and EGing PV EG-670M66-HUV?
EGing PV EG-590M60-HU/BF-DG has a 30 years power warranty; EGing PV EG-670M66-HUV 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.
Are EGing PV EG-590M60-HU/BF-DG and EGing PV EG-670M66-HUV bifacial panels?
EGing PV EG-590M60-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.