JA Solar JAM72S20-450/MR vs Longi Solar LR5-54HTH-425M
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
JAM72S20-450/MR
LR5-54HTH-425M
Difference
Module efficiency
20.30 %
21.80 %
1.50 pp more efficient
Temperature coefficient
-0.350 %/°C
-0.290 %/°C
0.060 %/°C better in heat
Power density
202.5 Wp/m²
217.6 Wp/m²
15.1 Wp/m² higher
Annual degradation
0.55 %/yr
0.40 %/yr
0.15 %/yr slower
Weight
24.5 kg
20.8 kg
3.7 kg lighter
Rated power
450 Wp
425 Wp
25 W more power
Product warranty
12 yrs
15 yrs
3 yrs longer
Weight per kWp
54.4 kg/kWp
48.9 kg/kWp
5.5 kg/kWp lighter
Open-circuit voltage
49.70 V
38.93 V
10.77 V apart
Short-circuit current
11.36 A
14.07 A
2.71 A apart
Module area
2.222 m²
1.953 m²
0.269 m² apart
Voltage at max power
41.52 V
32.64 V
8.88 V apart
Current at max power
10.84 A
13.03 A
2.19 A apart
Cell count
144
108
36 cells apart
Dimensions
2112x1052x35 mm
1722x1134x30 mm
2112x1052x35 mm vs 1722x1134x30 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
JAM72S20-450/MR
14,584 kWh
LR5-54HTH-425M
14,183 kWh
Lifetime gap
401 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
JAM72S20-450/MR
LR5-54HTH-425M
Standard test conditions
25 °C
100.0% of rated power
450 W
425 W
Cool, bright day
40 °C
94.8% of rated power
426 W
407 W
Typical summer roof
55 °C
89.5% of rated power
403 W
388 W
Hot roof
70 °C
84.2% of rated power
379 W
370 W
03
Full specification
Parameter
JAM72S20-450/MR
LR5-54HTH-425M
Difference
Power and efficiency
Rated power
450 Wp
425 Wp
+25 W for JAM72S20-450/MR
Module efficiency
20.30 %
21.80 %
+1.50 pp for LR5-54HTH-425M
Power density
202.5 Wp/m²
217.6 Wp/m²
+15.1 Wp/m² for LR5-54HTH-425M
Open-circuit voltage
49.70 V
38.93 V
10.77 V apart
Voltage at max power
41.52 V
32.64 V
8.88 V apart
Short-circuit current
11.36 A
14.07 A
2.71 A apart
Current at max power
10.84 A
13.03 A
2.19 A apart
Temperature
Temperature coefficient
-0.350 %/°C
-0.290 %/°C
+0.060 %/°C for LR5-54HTH-425M
Mechanical
Dimensions
2112x1052x35 mm
1722x1134x30 mm
2112x1052x35 mm vs 1722x1134x30 mm
Module area
2.222 m²
1.953 m²
0.269 m² apart
Weight
24.5 kg
20.8 kg
-3.7 kg for LR5-54HTH-425M
Weight per kWp
54.4 kg/kWp
48.9 kg/kWp
-5.5 kg/kWp for LR5-54HTH-425M
Warranty and degradation
Product warranty
12 yrs
15 yrs
+3 yrs for LR5-54HTH-425M
Performance warranty
25 yrs
25 yrs
Same
Annual degradation
0.55 %/yr
0.40 %/yr
-0.15 %/yr for LR5-54HTH-425M
Technology
Cell technology
PERC
-
Not published by Longi Solar
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
144
108
36 cells apart
Bifacial
No
No
Same
04
14,129 panels
Against the whole database
Efficiency
#11,851
vs
#7,085
LR5-54HTH-425M leads by 4,766 places
Power density
#11,930
vs
#7,235
LR5-54HTH-425M leads by 4,695 places
Heat behaviour
#10,489
vs
#2,220
LR5-54HTH-425M leads by 8,269 places
Weight
#8,835
vs
#2,630
LR5-54HTH-425M leads by 6,205 places
Warranty
#9,912
vs
#9,912
Tied - the same position in the database
Overall
#11,505
vs
#10,559
LR5-54HTH-425M leads by 946 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: JA Solar JAM72S20-450/MR or Longi Solar LR5-54HTH-425M?
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 JA Solar JAM72S20-450/MR and Longi Solar LR5-54HTH-425M?
JA Solar JAM72S20-450/MR has a module efficiency of 20.30%, while Longi Solar LR5-54HTH-425M is 21.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does JA Solar JAM72S20-450/MR use vs Longi Solar LR5-54HTH-425M?
JA Solar JAM72S20-450/MR uses PERC cells; Longi Solar LR5-54HTH-425M 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 JA Solar JAM72S20-450/MR and Longi Solar LR5-54HTH-425M?
JA Solar JAM72S20-450/MR has a 25 years power warranty; Longi Solar LR5-54HTH-425M 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 330 JA Solar offers · 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.