Longi Solar LR5-54HTH-425M vs Longi Solar LR5-72HTH-580M
VS
The verdict
72HTH-580M leads on the differences that matter
The largest is module efficiency: 0.70 pp more efficient. 8 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 10 differencesHow alike are they
8
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
10 of 18 parameters
What actually differs
Parameter
54HTH-425M
72HTH-580M
Difference
Module efficiency
21.80 %
22.50 %
0.70 pp more efficient
Rated power
425 Wp
580 Wp
155 W more power
Weight
20.8 kg
27.2 kg
6.4 kg lighter
Power density
217.6 Wp/m²
224.5 Wp/m²
6.9 Wp/m² higher
Open-circuit voltage
38.93 V
52.21 V
13.28 V apart
Module area
1.953 m²
2.583 m²
0.631 m² apart
Voltage at max power
32.64 V
44.06 V
11.42 V apart
Cell count
108
144
36 cells apart
Weight per kWp
48.9 kg/kWp
46.9 kg/kWp
2.0 kg/kWp lighter
Dimensions
1722x1134x30 mm
2278x1134x30 mm
1722x1134x30 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 (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
54HTH-425M
14,183 kWh
72HTH-580M
19,356 kWh
Lifetime gap
5,173 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
54HTH-425M
72HTH-580M
Standard test conditions
25 °C
100.0% of rated power
425 W
580 W
Cool, bright day
40 °C
95.7% of rated power
407 W
555 W
Typical summer roof
55 °C
91.3% of rated power
388 W
530 W
Hot roof
70 °C
87.0% of rated power
370 W
504 W
03
Full specification
Parameter
54HTH-425M
72HTH-580M
Difference
Power and efficiency
Rated power
425 Wp
580 Wp
+155 W for 72HTH-580M
Module efficiency
21.80 %
22.50 %
+0.70 pp for 72HTH-580M
Power density
217.6 Wp/m²
224.5 Wp/m²
+6.9 Wp/m² for 72HTH-580M
Open-circuit voltage
38.93 V
52.21 V
13.28 V apart
Voltage at max power
32.64 V
44.06 V
11.42 V apart
Short-circuit current
14.07 A
14.20 A
Effectively the same
Current at max power
13.03 A
13.17 A
Effectively the same
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
1722x1134x30 mm
2278x1134x30 mm
1722x1134x30 mm vs 2278x1134x30 mm
Module area
1.953 m²
2.583 m²
0.631 m² apart
Weight
20.8 kg
27.2 kg
-6.4 kg for 54HTH-425M
Weight per kWp
48.9 kg/kWp
46.9 kg/kWp
-2.0 kg/kWp for 72HTH-580M
Warranty and degradation
Product warranty
15 yrs
15 yrs
Same
Performance warranty
25 yrs
25 yrs
Same
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
-
-
Neither datasheet publishes this
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
108
144
36 cells apart
Bifacial
No
No
Same
04
14,129 panels
Against the whole database
Efficiency
#7,085
vs
#4,281
72HTH-580M leads by 2,804 places
Power density
#7,235
vs
#4,607
72HTH-580M leads by 2,628 places
Heat behaviour
#2,220
vs
#2,220
Tied - the same position in the database
Weight
#2,630
vs
#1,393
72HTH-580M leads by 1,237 places
Warranty
#9,912
vs
#9,912
Tied - the same position in the database
Overall
#10,559
vs
#4,852
72HTH-580M leads by 5,707 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Longi Solar LR5-54HTH-425M or Longi Solar LR5-72HTH-580M?
According to our database: Longi Solar LR5-72HTH-580M has higher module efficiency (22.50% vs 21.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar LR5-54HTH-425M and Longi Solar LR5-72HTH-580M?
Longi Solar LR5-54HTH-425M has a module efficiency of 21.80%, while Longi Solar LR5-72HTH-580M is 22.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR5-54HTH-425M use vs Longi Solar LR5-72HTH-580M?
Longi Solar LR5-54HTH-425M uses Monocrystalline cells; Longi Solar LR5-72HTH-580M uses Monocrystalline. 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 LR5-54HTH-425M and Longi Solar LR5-72HTH-580M?
Longi Solar LR5-54HTH-425M has a 25 years power warranty; Longi Solar LR5-72HTH-580M 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.
Shop prices: See 152 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.