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72HVHF-665M vs 54HTH-455M 4 of 19 identical Swap Change panels

Longi Solar LR7-72HVHF-665M vs Longi Solar LR7-54HTH-455M

Longi Solar LR7-72HVHF-665M
LR7-72HVHF-665M
665 Wp 24.60 % N-type
Open panel page Datasheet PDF
VS
Longi Solar LR7-54HTH-455M
LR7-54HTH-455M
455 Wp 22.30 % N-type
Open panel page Datasheet PDF
The verdict

72HVHF-665M leads on the differences that matter

The largest is module efficiency: 2.30 pp more efficient. 4 of 19 comparable parameters are identical.

See all 15 differences
How alike are they
4 of 19 comparable
parameters are identical
identical differs
01

What actually differs

15 of 19 parameters
Parameter 72HVHF-665M 54HTH-455M Difference
Module efficiency 24.60 % 22.30 % 2.30 pp more efficient
Rated power 665 Wp 455 Wp 210 W more power
Power density 246.2 Wp/m² 222.9 Wp/m² 23.3 Wp/m² higher
Performance warranty 30 yrs 25 yrs 5 yrs longer
Weight 28.5 kg 21.6 kg 6.9 kg lighter
Temperature coefficient -0.260 %/°C -0.280 %/°C 0.020 %/°C better in heat
Open-circuit voltage 54.20 V 39.15 V 15.05 V apart
Module area 2.701 m² 2.041 m² 0.660 m² apart
Weight per kWp 42.9 kg/kWp 47.5 kg/kWp 4.6 kg/kWp lighter
Annual degradation 0.35 %/yr 0.40 %/yr 0.05 %/yr slower
Voltage at max power 44.86 V 32.98 V 11.88 V apart
Cell count 144 108 36 cells apart
Short-circuit current 15.52 A 14.79 A 0.73 A apart
Current at max power 14.83 A 13.80 A 1.03 A apart
Dimensions 2382x1134x30 mm 1800x1134x30 mm 2382x1134x30 mm vs 1800x1134x30 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
72HVHF-665M
22,486 kWh
54HTH-455M
15,266 kWh
Lifetime gap
7,220 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 72HVHF-665M 54HTH-455M
Standard test conditions 25 °C 100.0% of rated power 665 W 455 W
Cool, bright day 40 °C 95.8% of rated power 639 W 436 W
Typical summer roof 55 °C 91.6% of rated power 613 W 417 W
Hot roof 70 °C 87.4% of rated power 587 W 398 W
03

Full specification

Parameter 72HVHF-665M 54HTH-455M Difference
Power and efficiency
Rated power 665 Wp 455 Wp +210 W for 72HVHF-665M
Module efficiency 24.60 % 22.30 % +2.30 pp for 72HVHF-665M
Power density 246.2 Wp/m² 222.9 Wp/m² +23.3 Wp/m² for 72HVHF-665M
Open-circuit voltage 54.20 V 39.15 V 15.05 V apart
Voltage at max power 44.86 V 32.98 V 11.88 V apart
Short-circuit current 15.52 A 14.79 A 0.73 A apart
Current at max power 14.83 A 13.80 A 1.03 A apart
Temperature
Temperature coefficient -0.260 %/°C -0.280 %/°C +0.020 %/°C for 72HVHF-665M
Mechanical
Dimensions 2382x1134x30 mm 1800x1134x30 mm 2382x1134x30 mm vs 1800x1134x30 mm
Module area 2.701 m² 2.041 m² 0.660 m² apart
Weight 28.5 kg 21.6 kg -6.9 kg for 54HTH-455M
Weight per kWp 42.9 kg/kWp 47.5 kg/kWp -4.6 kg/kWp for 72HVHF-665M
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 25 yrs +5 yrs for 72HVHF-665M
Annual degradation 0.35 %/yr 0.40 %/yr -0.05 %/yr for 72HVHF-665M
Technology
Cell technology N-type N-type Same
Cell type Monocrystalline Monocrystalline Same
Cell count 144 108 36 cells apart
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#51 vs #5,100
72HVHF-665M leads by 5,049 places
Power density
#42 vs #5,100
72HVHF-665M leads by 5,058 places
Heat behaviour
#511 vs #1,309
72HVHF-665M leads by 798 places
Weight
#244 vs #1,700
72HVHF-665M leads by 1,456 places
Warranty
#21 vs #9,798
72HVHF-665M leads by 9,777 places
Overall
#387 vs #9,419
72HVHF-665M leads by 9,032 places
05

More useful comparisons

Open the full database
Same series, other bin
Longi Solar LR7-72HVHF-665M vs Longi Solar LR7-72HVHF-670M
One difference: module efficiency
Same series, other bin
Longi Solar LR7-72HVHF-665M vs Longi Solar LR7-72HVHF-660M
One difference: module efficiency
Same series, other bin
Longi Solar LR7-72HVHF-665M vs Longi Solar LR7-72HVHF-655M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-72HVHF-665M vs Longi Solar LR7-72HVHF-650M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-72HVHF-665M vs Longi Solar LR7-72HVHF-645M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-72HVHF-665M vs Longi Solar LR7-72HVHF-640M
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Longi Solar LR7-72HVHF-665M or Longi Solar LR7-54HTH-455M?
According to our database: Longi Solar LR7-72HVHF-665M has higher module efficiency (24.60% vs 22.30%); Longi Solar LR7-72HVHF-665M tolerates heat better (temp coeff -0.260%/°C vs -0.280%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar LR7-72HVHF-665M and Longi Solar LR7-54HTH-455M?
Longi Solar LR7-72HVHF-665M has a module efficiency of 24.60%, while Longi Solar LR7-54HTH-455M is 22.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR7-72HVHF-665M use vs Longi Solar LR7-54HTH-455M?
Longi Solar LR7-72HVHF-665M uses N-type cells; Longi Solar LR7-54HTH-455M uses N-type. 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 LR7-72HVHF-665M and Longi Solar LR7-54HTH-455M?
Longi Solar LR7-72HVHF-665M has a 30 years power warranty; Longi Solar LR7-54HTH-455M 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.