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LR5-72HGD-590M vs LR7-72HVDF-665M 5 of 19 identical Swap Change panels

Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVDF-665M

Longi Solar LR5-72HGD-590M
LR5-72HGD-590M
590 Wp 22.80 % N-type Bifacial
Open panel page Datasheet PDF
VS
Longi Solar LR7-72HVDF-665M
LR7-72HVDF-665M
665 Wp 24.60 % N-type Bifacial
Open panel page Datasheet PDF
The verdict

LR7-72HVDF-665M leads on the differences that matter

The largest is module efficiency: 1.80 pp more efficient. 5 of 19 comparable parameters are identical.

See all 14 differences
How alike are they
5 of 19 comparable
parameters are identical
identical differs
01

What actually differs

14 of 19 parameters
Parameter LR5-72HGD-590M LR7-72HVDF-665M Difference
Module efficiency 22.80 % 24.60 % 1.80 pp more efficient
Rated power 590 Wp 665 Wp 75 W more power
Power density 228.4 Wp/m² 246.2 Wp/m² 17.8 Wp/m² higher
Temperature coefficient -0.280 %/°C -0.260 %/°C 0.020 %/°C better in heat
Product warranty 12 yrs 15 yrs 3 yrs longer
Module area 2.583 m² 2.701 m² 0.118 m² apart
Open-circuit voltage 51.63 V 54.52 V 2.89 V apart
Weight per kWp 53.9 kg/kWp 50.4 kg/kWp 3.5 kg/kWp lighter
Weight 31.8 kg 33.5 kg 1.7 kg lighter
Annual degradation 0.40 %/yr 0.35 %/yr 0.05 %/yr slower
Short-circuit current 14.38 A 15.35 A 0.97 A apart
Current at max power 13.59 A 14.72 A 1.13 A apart
Dimensions 2278x1134x30 mm 2382x1134x30 mm 2278x1134x30 mm vs 2382x1134x30 mm
Voltage at max power 43.44 V 45.17 V 1.73 V apart
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
LR5-72HGD-590M
19,796 kWh
LR7-72HVDF-665M
22,486 kWh
Lifetime gap
2,690 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario LR5-72HGD-590M LR7-72HVDF-665M
Standard test conditions 25 °C 100.0% of rated power 590 W 665 W
Cool, bright day 40 °C 95.8% of rated power 565 W 639 W
Typical summer roof 55 °C 91.6% of rated power 540 W 613 W
Hot roof 70 °C 87.4% of rated power 516 W 587 W
03

Full specification

Parameter LR5-72HGD-590M LR7-72HVDF-665M Difference
Power and efficiency
Rated power 590 Wp 665 Wp +75 W for LR7-72HVDF-665M
Module efficiency 22.80 % 24.60 % +1.80 pp for LR7-72HVDF-665M
Power density 228.4 Wp/m² 246.2 Wp/m² +17.8 Wp/m² for LR7-72HVDF-665M
Open-circuit voltage 51.63 V 54.52 V 2.89 V apart
Voltage at max power 43.44 V 45.17 V 1.73 V apart
Short-circuit current 14.38 A 15.35 A 0.97 A apart
Current at max power 13.59 A 14.72 A 1.13 A apart
Temperature
Temperature coefficient -0.280 %/°C -0.260 %/°C +0.020 %/°C for LR7-72HVDF-665M
Mechanical
Dimensions 2278x1134x30 mm 2382x1134x30 mm 2278x1134x30 mm vs 2382x1134x30 mm
Module area 2.583 m² 2.701 m² 0.118 m² apart
Weight 31.8 kg 33.5 kg -1.7 kg for LR5-72HGD-590M
Weight per kWp 53.9 kg/kWp 50.4 kg/kWp -3.5 kg/kWp for LR7-72HVDF-665M
Warranty and degradation
Product warranty 12 yrs 15 yrs +3 yrs for LR7-72HVDF-665M
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.35 %/yr -0.05 %/yr for LR7-72HVDF-665M
Technology
Cell technology N-type N-type Same
Cell type Monocrystalline Monocrystalline Same
Cell count 144 144 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#2,714 vs #51
LR7-72HVDF-665M leads by 2,663 places
Power density
#2,598 vs #42
LR7-72HVDF-665M leads by 2,556 places
Heat behaviour
#1,309 vs #511
LR7-72HVDF-665M leads by 798 places
Weight
#8,021 vs #3,742
LR7-72HVDF-665M leads by 4,279 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,801 vs #414
LR7-72HVDF-665M leads by 3,387 places
05

More useful comparisons

Open the full database
Same series, other bin
Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVHF-670M
15 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR5-72HGD-590M vs Longi Solar LR8-66HYD-670M
14 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVH-670M
15 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVHF-665M
15 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVD-665M
14 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR5-72HGD-590M vs Longi Solar LR7-72HVH-665M
15 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Longi Solar LR5-72HGD-590M or Longi Solar LR7-72HVDF-665M?
According to our database: Longi Solar LR7-72HVDF-665M has higher module efficiency (24.60% vs 22.80%); Longi Solar LR7-72HVDF-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 LR5-72HGD-590M and Longi Solar LR7-72HVDF-665M?
Longi Solar LR5-72HGD-590M has a module efficiency of 22.80%, while Longi Solar LR7-72HVDF-665M is 24.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR5-72HGD-590M use vs Longi Solar LR7-72HVDF-665M?
Longi Solar LR5-72HGD-590M uses N-type cells; Longi Solar LR7-72HVDF-665M 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 LR5-72HGD-590M and Longi Solar LR7-72HVDF-665M?
Longi Solar LR5-72HGD-590M has a 30 years power warranty; Longi Solar LR7-72HVDF-665M 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 LR5-72HGD-590M and Longi Solar LR7-72HVDF-665M bifacial panels?
Both Longi Solar LR5-72HGD-590M and Longi Solar LR7-72HVDF-665M are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.

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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.