Longi Solar LR7-54HJD-500M vs Longi Solar LR7-72HVHF-670M
VS
The verdict
14 differences, and they point both ways
The largest is rated power: 170 W more power. 5 of 19 comparable parameters are identical.
See all 14 differencesHow alike are they
5
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
14 of 19 parameters
What actually differs
Parameter
54HJD-500M
72HVHF-670M
Difference
Rated power
500 Wp
670 Wp
170 W more power
Weight
23.5 kg
28.5 kg
5.0 kg lighter
Product warranty
30 yrs
15 yrs
15 yrs longer
Temperature coefficient
-0.240 %/°C
-0.260 %/°C
0.020 %/°C better in heat
Open-circuit voltage
41.35 V
54.30 V
12.95 V apart
Module area
2.041 m²
2.701 m²
0.660 m² apart
Module efficiency
24.50 %
24.80 %
0.30 pp more efficient
Weight per kWp
47.0 kg/kWp
42.5 kg/kWp
4.5 kg/kWp lighter
Cell technology
Back Contact
N-type
Back Contact vs N-type
Power density
245.0 Wp/m²
248.0 Wp/m²
3.1 Wp/m² higher
Voltage at max power
34.17 V
44.96 V
10.79 V apart
Cell count
108
144
36 cells apart
Bifacial
Yes
No
Yes vs No
Dimensions
1800x1134x30 mm
2382x1134x30 mm
1800x1134x30 mm vs 2382x1134x30 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
54HJD-500M
16,907 kWh
72HVHF-670M
22,655 kWh
Lifetime gap
5,748 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
54HJD-500M
72HVHF-670M
Standard test conditions
25 °C
100.0% of rated power
500 W
670 W
Cool, bright day
40 °C
96.1% of rated power
482 W
644 W
Typical summer roof
55 °C
92.2% of rated power
464 W
618 W
Hot roof
70 °C
88.3% of rated power
446 W
592 W
03
Full specification
Parameter
54HJD-500M
72HVHF-670M
Difference
Power and efficiency
Rated power
500 Wp
670 Wp
+170 W for 72HVHF-670M
Module efficiency
24.50 %
24.80 %
+0.30 pp for 72HVHF-670M
Power density
245.0 Wp/m²
248.0 Wp/m²
+3.1 Wp/m² for 72HVHF-670M
Open-circuit voltage
41.35 V
54.30 V
12.95 V apart
Voltage at max power
34.17 V
44.96 V
10.79 V apart
Short-circuit current
15.30 A
15.60 A
Effectively the same
Current at max power
14.63 A
14.91 A
Effectively the same
Temperature
Temperature coefficient
-0.240 %/°C
-0.260 %/°C
+0.020 %/°C for 54HJD-500M
Mechanical
Dimensions
1800x1134x30 mm
2382x1134x30 mm
1800x1134x30 mm vs 2382x1134x30 mm
Module area
2.041 m²
2.701 m²
0.660 m² apart
Weight
23.5 kg
28.5 kg
-5.0 kg for 54HJD-500M
Weight per kWp
47.0 kg/kWp
42.5 kg/kWp
-4.5 kg/kWp for 72HVHF-670M
Warranty and degradation
Product warranty
30 yrs
15 yrs
+15 yrs for 54HJD-500M
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.35 %/yr
0.35 %/yr
Same
Technology
Cell technology
Back Contact
N-type
Back Contact vs N-type
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
108
144
36 cells apart
Bifacial
Yes
No
Yes vs No
04
14,005 panels
Against the whole database
Efficiency
#74
vs
#12
72HVHF-670M leads by 62 places
Power density
#77
vs
#14
72HVHF-670M leads by 63 places
Heat behaviour
#13
vs
#511
54HJD-500M leads by 498 places
Weight
#1,450
vs
#226
72HVHF-670M leads by 1,224 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1,611
vs
#284
72HVHF-670M leads by 1,327 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Longi Solar LR7-54HJD-500M or Longi Solar LR7-72HVHF-670M?
According to our database: Longi Solar LR7-72HVHF-670M has higher module efficiency (24.80% vs 24.50%); Longi Solar LR7-54HJD-500M tolerates heat better (temp coeff -0.240%/°C vs -0.260%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar LR7-54HJD-500M and Longi Solar LR7-72HVHF-670M?
Longi Solar LR7-54HJD-500M has a module efficiency of 24.50%, while Longi Solar LR7-72HVHF-670M is 24.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR7-54HJD-500M use vs Longi Solar LR7-72HVHF-670M?
Longi Solar LR7-54HJD-500M uses Back Contact cells; Longi Solar LR7-72HVHF-670M uses N-type. 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 Longi Solar LR7-54HJD-500M and Longi Solar LR7-72HVHF-670M?
Longi Solar LR7-54HJD-500M has a 30 years power warranty; Longi Solar LR7-72HVHF-670M 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 Longi Solar LR7-54HJD-500M and Longi Solar LR7-72HVHF-670M bifacial panels?
Longi Solar LR7-54HJD-500M is bifacial (captures light from both faces); Longi Solar LR7-72HVHF-670M is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
Shop prices: See 174 Longi Solar 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.