Longi Solar LR5-54HTH-425M vs JA Solar JAM72S20-450/MR
VS
The verdict
LR5-54HTH-425M leads on the differences that matter
The largest is module efficiency: 1.50 pp more efficient. 3 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 15 differencesHow alike are they
3
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
15 of 18 parameters
What actually differs
Parameter
LR5-54HTH-425M
JAM72S20-450/MR
Difference
Module efficiency
21.80 %
20.30 %
1.50 pp more efficient
Temperature coefficient
-0.290 %/°C
-0.350 %/°C
0.060 %/°C better in heat
Power density
217.6 Wp/m²
202.5 Wp/m²
15.1 Wp/m² higher
Annual degradation
0.40 %/yr
0.55 %/yr
0.15 %/yr slower
Weight
20.8 kg
24.5 kg
3.7 kg lighter
Rated power
425 Wp
450 Wp
25 W more power
Product warranty
15 yrs
12 yrs
3 yrs longer
Weight per kWp
48.9 kg/kWp
54.4 kg/kWp
5.5 kg/kWp lighter
Open-circuit voltage
38.93 V
49.70 V
10.77 V apart
Short-circuit current
14.07 A
11.36 A
2.71 A apart
Module area
1.953 m²
2.222 m²
0.269 m² apart
Voltage at max power
32.64 V
41.52 V
8.88 V apart
Current at max power
13.03 A
10.84 A
2.19 A apart
Cell count
108
144
36 cells apart
Dimensions
1722x1134x30 mm
2112x1052x35 mm
1722x1134x30 mm vs 2112x1052x35 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
LR5-54HTH-425M
14,183 kWh
JAM72S20-450/MR
14,584 kWh
Lifetime gap
401 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
LR5-54HTH-425M
JAM72S20-450/MR
Standard test conditions
25 °C
100.0% of rated power
425 W
450 W
Cool, bright day
40 °C
94.8% of rated power
407 W
426 W
Typical summer roof
55 °C
89.5% of rated power
388 W
403 W
Hot roof
70 °C
84.2% of rated power
370 W
379 W
03
Full specification
Parameter
LR5-54HTH-425M
JAM72S20-450/MR
Difference
Power and efficiency
Rated power
425 Wp
450 Wp
+25 W for JAM72S20-450/MR
Module efficiency
21.80 %
20.30 %
+1.50 pp for LR5-54HTH-425M
Power density
217.6 Wp/m²
202.5 Wp/m²
+15.1 Wp/m² for LR5-54HTH-425M
Open-circuit voltage
38.93 V
49.70 V
10.77 V apart
Voltage at max power
32.64 V
41.52 V
8.88 V apart
Short-circuit current
14.07 A
11.36 A
2.71 A apart
Current at max power
13.03 A
10.84 A
2.19 A apart
Temperature
Temperature coefficient
-0.290 %/°C
-0.350 %/°C
+0.060 %/°C for LR5-54HTH-425M
Mechanical
Dimensions
1722x1134x30 mm
2112x1052x35 mm
1722x1134x30 mm vs 2112x1052x35 mm
Module area
1.953 m²
2.222 m²
0.269 m² apart
Weight
20.8 kg
24.5 kg
-3.7 kg for LR5-54HTH-425M
Weight per kWp
48.9 kg/kWp
54.4 kg/kWp
-5.5 kg/kWp for LR5-54HTH-425M
Warranty and degradation
Product warranty
15 yrs
12 yrs
+3 yrs for LR5-54HTH-425M
Performance warranty
25 yrs
25 yrs
Same
Annual degradation
0.40 %/yr
0.55 %/yr
-0.15 %/yr for LR5-54HTH-425M
Technology
Cell technology
-
PERC
Not published by Longi Solar
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
#11,851
LR5-54HTH-425M leads by 4,766 places
Power density
#7,235
vs
#11,930
LR5-54HTH-425M leads by 4,695 places
Heat behaviour
#2,220
vs
#10,489
LR5-54HTH-425M leads by 8,269 places
Weight
#2,630
vs
#8,835
LR5-54HTH-425M leads by 6,205 places
Warranty
#9,912
vs
#9,912
Tied - the same position in the database
Overall
#10,559
vs
#11,505
LR5-54HTH-425M leads by 946 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 JA Solar JAM72S20-450/MR?
According to our database: Longi Solar LR5-54HTH-425M has higher module efficiency (21.80% vs 20.30%); Longi Solar LR5-54HTH-425M tolerates heat better (temp coeff -0.290%/°C vs -0.350%/°C). 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 JA Solar JAM72S20-450/MR?
Longi Solar LR5-54HTH-425M has a module efficiency of 21.80%, while JA Solar JAM72S20-450/MR is 20.30%. 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 JA Solar JAM72S20-450/MR?
Longi Solar LR5-54HTH-425M uses Monocrystalline cells; JA Solar JAM72S20-450/MR 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 Longi Solar LR5-54HTH-425M and JA Solar JAM72S20-450/MR?
Longi Solar LR5-54HTH-425M has a 25 years power warranty; JA Solar JAM72S20-450/MR 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 · See 330 JA 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.