Longi Solar LR5-72HPH-545M vs Longi Solar LR5-66HPH-495M
VS
The verdict
72HPH-545M leads on the differences that matter
The largest is rated power: 50 W more power. 11 of 19 comparable parameters are identical.
See all 8 differencesHow alike are they
11
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
8 of 19 parameters
What actually differs
Parameter
72HPH-545M
66HPH-495M
Difference
Rated power
545 Wp
495 Wp
50 W more power
Open-circuit voltage
49.65 V
45.40 V
4.25 V apart
Module area
2.583 m²
2.349 m²
0.235 m² apart
Weight
27.5 kg
25.1 kg
2.4 kg lighter
Temperature coefficient
-0.340 %/°C
-0.350 %/°C
0.010 %/°C better in heat
Cell count
144
132
12 cells apart
Voltage at max power
41.80 V
38.23 V
3.57 V apart
Dimensions
2278x1134x35 mm
2073x1133x35 mm
2278x1134x35 mm vs 2073x1133x35 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
72HPH-545M
17,663 kWh
66HPH-495M
16,042 kWh
Lifetime gap
1,621 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
72HPH-545M
66HPH-495M
Standard test conditions
25 °C
100.0% of rated power
545 W
495 W
Cool, bright day
40 °C
94.8% of rated power
517 W
469 W
Typical summer roof
55 °C
89.5% of rated power
489 W
443 W
Hot roof
70 °C
84.2% of rated power
462 W
417 W
03
Full specification
Parameter
72HPH-545M
66HPH-495M
Difference
Power and efficiency
Rated power
545 Wp
495 Wp
+50 W for 72HPH-545M
Module efficiency
21.10 %
21.10 %
Same
Power density
211.0 Wp/m²
210.8 Wp/m²
Effectively the same
Open-circuit voltage
49.65 V
45.40 V
4.25 V apart
Voltage at max power
41.80 V
38.23 V
3.57 V apart
Short-circuit current
13.92 A
13.82 A
Effectively the same
Current at max power
13.04 A
12.95 A
Effectively the same
Temperature
Temperature coefficient
-0.340 %/°C
-0.350 %/°C
+0.010 %/°C for 72HPH-545M
Mechanical
Dimensions
2278x1134x35 mm
2073x1133x35 mm
2278x1134x35 mm vs 2073x1133x35 mm
Module area
2.583 m²
2.349 m²
0.235 m² apart
Weight
27.5 kg
25.1 kg
-2.4 kg for 66HPH-495M
Weight per kWp
50.5 kg/kWp
50.7 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
25 yrs
25 yrs
Same
Annual degradation
0.55 %/yr
0.55 %/yr
Same
Technology
Cell technology
PERC
PERC
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
144
132
12 cells apart
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#9,297
vs
#9,297
Tied - the same position in the database
Power density
#9,312
vs
#9,554
72HPH-545M leads by 242 places
Heat behaviour
#8,778
vs
#10,419
72HPH-545M leads by 1,641 places
Weight
#3,832
vs
#4,122
72HPH-545M leads by 290 places
Warranty
#9,798
vs
#9,798
Tied - the same position in the database
Overall
#8,467
vs
#9,945
72HPH-545M leads by 1,478 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 LR5-72HPH-545M or Longi Solar LR5-66HPH-495M?
According to our database: Longi Solar LR5-72HPH-545M tolerates heat better (temp coeff -0.340%/°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 LR5-72HPH-545M and Longi Solar LR5-66HPH-495M?
Longi Solar LR5-72HPH-545M has a module efficiency of 21.10%, while Longi Solar LR5-66HPH-495M is 21.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR5-72HPH-545M use vs Longi Solar LR5-66HPH-495M?
Longi Solar LR5-72HPH-545M uses PERC cells; Longi Solar LR5-66HPH-495M 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 LR5-72HPH-545M and Longi Solar LR5-66HPH-495M?
Longi Solar LR5-72HPH-545M has a 25 years power warranty; Longi Solar LR5-66HPH-495M 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 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.