Longi Solar 610M vs Longi Solar 615M
VS
The verdict
Identical on every published parameter
All 17 comparable parameters agree, with 2 more left out because at least one datasheet does not publish them. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from.
How alike are they
17
of 17 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
0 of 17 parameters
What actually differs
Every comparable parameter agrees. The full specification is below.
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.
610M
20,467 kWh
615M
20,634 kWh
Lifetime gap
167 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
610M
615M
Standard test conditions
25 °C
100.0% of rated power
610 W
615 W
Cool, bright day
40 °C
95.8% of rated power
584 W
589 W
Typical summer roof
55 °C
91.6% of rated power
559 W
563 W
Hot roof
70 °C
87.4% of rated power
533 W
538 W
03
Full specification
Parameter
610M
615M
Difference
Power and efficiency
Rated power
610 Wp
615 Wp
Effectively the same
Module efficiency
22.80 %
22.90 %
Effectively the same
Power density
227.6 Wp/m²
229.5 Wp/m²
Effectively the same
Open-circuit voltage
52.81 V
52.96 V
Effectively the same
Voltage at max power
44.48 V
44.63 V
Effectively the same
Short-circuit current
14.69 A
14.75 A
Effectively the same
Current at max power
13.72 A
13.78 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
50.8 kg/kWp
50.4 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
-
-
Neither datasheet publishes this
Bifacial
No
No
Same
04
14,129 panels
Against the whole database
Efficiency
#2,769
vs
#2,412
615M leads by 357 places
Power density
#3,244
vs
#2,367
615M leads by 877 places
Heat behaviour
#1,347
vs
#1,347
Tied - the same position in the database
Weight
#4,244
vs
#3,802
615M leads by 442 places
Warranty
#9,912
vs
#9,912
Tied - the same position in the database
Overall
#1,779
vs
#1,620
615M leads by 159 places
05
Open the full database
More useful comparisons
Same series, other bin
Longi Solar 610M vs Longi Solar 620M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar 610M vs Longi Solar LGi7-72HTD-620M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar 610M vs Longi Solar LGi7-72HTD-615M
The same specification on paper
Same series, other bin
Longi Solar 610M vs Longi Solar LGi7-72HTD-610M
The same specification on paper
Same series, other bin
Longi Solar 610M vs Longi Solar 605M
One difference: module efficiency
Same series, other bin
Longi Solar 610M vs Longi Solar LGi7-72HTD-605M
One difference: module efficiency
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Longi Solar 610M or Longi Solar 615M?
According to our database: Longi Solar 615M has higher module efficiency (22.90% vs 22.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar 610M and Longi Solar 615M?
Longi Solar 610M has a module efficiency of 22.80%, while Longi Solar 615M is 22.90%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar 610M use vs Longi Solar 615M?
Longi Solar 610M uses Monocrystalline cells; Longi Solar 615M 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 610M and Longi Solar 615M?
Longi Solar 610M has a 25 years power warranty; Longi Solar 615M 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.