Longi Solar 605M vs Longi Solar LGi7-72HTD-620M
VS
The verdict
LGi7-72HTD-620M leads on the differences that matter
The largest is module efficiency: 0.50 pp more efficient. 14 of 17 comparable parameters are identical, with 2 more left out because at least one datasheet does not publish them.
See all 3 differencesHow alike are they
14
of 17 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
3 of 17 parameters
What actually differs
Parameter
605M
LGi7-72HTD-620M
Difference
Module efficiency
22.60 %
23.10 %
0.50 pp more efficient
Power density
225.7 Wp/m²
231.3 Wp/m²
5.6 Wp/m² higher
Rated power
605 Wp
620 Wp
15 W more power
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
Same temp coeff. for both panels (-0.280 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
605M
20,299 kWh
LGi7-72HTD-620M
20,802 kWh
Lifetime gap
503 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
605M
LGi7-72HTD-620M
Standard test conditions
25 °C
100.0% of rated power
605 W
620 W
Cool, bright day
40 °C
95.8% of rated power
580 W
594 W
Typical summer roof
55 °C
91.6% of rated power
554 W
568 W
Hot roof
70 °C
87.4% of rated power
529 W
542 W
03
Full specification
Parameter
605M
LGi7-72HTD-620M
Difference
Power and efficiency
Rated power
605 Wp
620 Wp
+15 W for LGi7-72HTD-620M
Module efficiency
22.60 %
23.10 %
+0.50 pp for LGi7-72HTD-620M
Power density
225.7 Wp/m²
231.3 Wp/m²
+5.6 Wp/m² for LGi7-72HTD-620M
Open-circuit voltage
52.66 V
53.11 V
Effectively the same
Voltage at max power
44.33 V
44.77 V
Effectively the same
Short-circuit current
14.62 A
14.82 A
Effectively the same
Current at max power
13.65 A
13.85 A
Effectively the same
Temperature
Temperature coefficient
-0.280 %/°C
-0.280 %/°C
Same
Mechanical
Dimensions
2376x1128x5 mm
2376x1128x5 mm
Same
Module area
2.680 m²
2.680 m²
Same
Weight
31.0 kg
31.0 kg
Same
Weight per kWp
51.2 kg/kWp
50.0 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
25 yrs
25 yrs
Same
Performance warranty
25 yrs
25 yrs
Same
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
-
-
Neither datasheet publishes this
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
-
72
Not published by Longi Solar
Bifacial
No
No
Same
04
14,129 panels
Against the whole database
Efficiency
#3,716
vs
#1,617
LGi7-72HTD-620M leads by 2,099 places
Power density
#3,901
vs
#1,665
LGi7-72HTD-620M leads by 2,236 places
Heat behaviour
#1,347
vs
#1,347
Tied - the same position in the database
Weight
#4,655
vs
#3,329
LGi7-72HTD-620M leads by 1,326 places
Warranty
#9,912
vs
#9,912
Tied - the same position in the database
Overall
#2,015
vs
#1,436
LGi7-72HTD-620M leads by 579 places
05
Open the full database
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Longi Solar 605M vs Longi Solar LGi7-72HTD-605M
The same specification on paper
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Longi Solar 605M or Longi Solar LGi7-72HTD-620M?
According to our database: Longi Solar LGi7-72HTD-620M has higher module efficiency (23.10% vs 22.60%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar 605M and Longi Solar LGi7-72HTD-620M?
Longi Solar 605M has a module efficiency of 22.60%, while Longi Solar LGi7-72HTD-620M is 23.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar 605M use vs Longi Solar LGi7-72HTD-620M?
Longi Solar 605M uses Monocrystalline cells; Longi Solar LGi7-72HTD-620M 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 Longi Solar 605M and Longi Solar LGi7-72HTD-620M?
Longi Solar 605M has a 25 years power warranty; Longi Solar LGi7-72HTD-620M 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 154 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.