Longi Solar LR5-54HTB-430M vs Longi Solar LR5-72HTD-585M
VS
The verdict
72HTD-585M leads on the differences that matter
The largest is rated power: 155 W more power. 5 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 13 differencesHow alike are they
5
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
13 of 18 parameters
What actually differs
Parameter
54HTB-430M
72HTD-585M
Difference
Rated power
430 Wp
585 Wp
155 W more power
Performance warranty
25 yrs
30 yrs
5 yrs longer
Module efficiency
22.00 %
22.60 %
0.60 pp more efficient
Weight
20.8 kg
31.8 kg
11.0 kg lighter
Weight per kWp
48.4 kg/kWp
54.4 kg/kWp
6.0 kg/kWp lighter
Power density
220.2 Wp/m²
226.5 Wp/m²
6.3 Wp/m² higher
Open-circuit voltage
39.43 V
52.45 V
13.02 V apart
Module area
1.953 m²
2.583 m²
0.631 m² apart
Temperature coefficient
-0.290 %/°C
-0.280 %/°C
0.010 %/°C better in heat
Voltage at max power
33.16 V
44.00 V
10.84 V apart
Cell count
108
144
36 cells apart
Bifacial
No
Yes
No vs Yes
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
54HTB-430M
14,350 kWh
72HTD-585M
19,523 kWh
Lifetime gap
5,173 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
54HTB-430M
72HTD-585M
Standard test conditions
25 °C
100.0% of rated power
430 W
585 W
Cool, bright day
40 °C
95.7% of rated power
411 W
560 W
Typical summer roof
55 °C
91.3% of rated power
393 W
536 W
Hot roof
70 °C
87.0% of rated power
374 W
511 W
03
Full specification
Parameter
54HTB-430M
72HTD-585M
Difference
Power and efficiency
Rated power
430 Wp
585 Wp
+155 W for 72HTD-585M
Module efficiency
22.00 %
22.60 %
+0.60 pp for 72HTD-585M
Power density
220.2 Wp/m²
226.5 Wp/m²
+6.3 Wp/m² for 72HTD-585M
Open-circuit voltage
39.43 V
52.45 V
13.02 V apart
Voltage at max power
33.16 V
44.00 V
10.84 V apart
Short-circuit current
14.00 A
14.19 A
Effectively the same
Current at max power
12.97 A
13.30 A
Effectively the same
Temperature
Temperature coefficient
-0.290 %/°C
-0.280 %/°C
+0.010 %/°C for 72HTD-585M
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
31.8 kg
-11.0 kg for 54HTB-430M
Weight per kWp
48.4 kg/kWp
54.4 kg/kWp
-6.0 kg/kWp for 54HTB-430M
Warranty and degradation
Product warranty
15 yrs
15 yrs
Same
Performance warranty
25 yrs
30 yrs
+5 yrs for 72HTD-585M
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
Yes
No vs Yes
04
14,129 panels
Against the whole database
Efficiency
#6,580
vs
#3,716
72HTD-585M leads by 2,864 places
Power density
#6,544
vs
#3,557
72HTD-585M leads by 2,987 places
Heat behaviour
#2,220
vs
#1,347
72HTD-585M leads by 873 places
Weight
#2,236
vs
#8,749
54HTB-430M leads by 6,513 places
Warranty
#9,912
vs
#21
72HTD-585M leads by 9,891 places
Overall
#10,323
vs
#3,633
72HTD-585M leads by 6,690 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 LR5-54HTB-430M or Longi Solar LR5-72HTD-585M?
According to our database: Longi Solar LR5-72HTD-585M has higher module efficiency (22.60% vs 22.00%); Longi Solar LR5-72HTD-585M tolerates heat better (temp coeff -0.280%/°C vs -0.290%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar LR5-54HTB-430M and Longi Solar LR5-72HTD-585M?
Longi Solar LR5-54HTB-430M has a module efficiency of 22.00%, while Longi Solar LR5-72HTD-585M is 22.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR5-54HTB-430M use vs Longi Solar LR5-72HTD-585M?
Longi Solar LR5-54HTB-430M uses Monocrystalline cells; Longi Solar LR5-72HTD-585M 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 LR5-54HTB-430M and Longi Solar LR5-72HTD-585M?
Longi Solar LR5-54HTB-430M has a 25 years power warranty; Longi Solar LR5-72HTD-585M 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 LR5-54HTB-430M and Longi Solar LR5-72HTD-585M bifacial panels?
Longi Solar LR5-72HTD-585M is bifacial (captures light from both faces); Longi Solar LR5-54HTB-430M is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
Shop prices: See 157 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.