Jinko Solar JKM580N-72HL4-BDV vs Jinko Solar JKM620N-78HL4-BDV
VS
The verdict
8 differences, and they point both ways
The largest is rated power: 40 W more power. 10 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 8 differencesHow alike are they
10
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
8 of 18 parameters
What actually differs
Parameter
JKM580N-72HL4-BDV
JKM620N-78HL4-BDV
Difference
Rated power
580 Wp
620 Wp
40 W more power
Open-circuit voltage
51.47 V
55.58 V
4.11 V apart
Module area
2.583 m²
2.795 m²
0.212 m² apart
Weight
32.0 kg
34.6 kg
2.6 kg lighter
Module efficiency
22.45 %
22.18 %
0.27 pp more efficient
Cell count
144
156
12 cells apart
Voltage at max power
42.59 V
45.93 V
3.34 V apart
Dimensions
2278x1134x30 mm
2465x1134x30 mm
2278x1134x30 mm vs 2465x1134x30 mm
02
What it means on a roof
Thirty years of production
A 1.0% first-year loss then 0.40% a year, assumed for both panels, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
JKM580N-72HL4-BDV
19,460 kWh
JKM620N-78HL4-BDV
20,802 kWh
Lifetime gap
1,342 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
JKM580N-72HL4-BDV
JKM620N-78HL4-BDV
Standard test conditions
25 °C
100.0% of rated power
580 W
620 W
Cool, bright day
40 °C
95.5% of rated power
554 W
592 W
Typical summer roof
55 °C
91.0% of rated power
528 W
564 W
Hot roof
70 °C
86.5% of rated power
502 W
536 W
03
Full specification
Parameter
JKM580N-72HL4-BDV
JKM620N-78HL4-BDV
Difference
Power and efficiency
Rated power
580 Wp
620 Wp
+40 W for JKM620N-78HL4-BDV
Module efficiency
22.45 %
22.18 %
+0.27 pp for JKM580N-72HL4-BDV
Power density
224.5 Wp/m²
221.8 Wp/m²
Effectively the same
Open-circuit voltage
51.47 V
55.58 V
4.11 V apart
Voltage at max power
42.59 V
45.93 V
3.34 V apart
Short-circuit current
14.37 A
14.19 A
Effectively the same
Current at max power
13.62 A
13.50 A
Effectively the same
Temperature
Temperature coefficient
-0.300 %/°C
-0.300 %/°C
Same
Mechanical
Dimensions
2278x1134x30 mm
2465x1134x30 mm
2278x1134x30 mm vs 2465x1134x30 mm
Module area
2.583 m²
2.795 m²
0.212 m² apart
Weight
32.0 kg
34.6 kg
-2.6 kg for JKM580N-72HL4-BDV
Weight per kWp
55.2 kg/kWp
55.8 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
-
Not published by Jinko Solar
Technology
Cell technology
N-type
N-type
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
144
156
12 cells apart
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#4,620
vs
#5,930
JKM580N-72HL4-BDV leads by 1,310 places
Power density
#4,547
vs
#5,869
JKM580N-72HL4-BDV leads by 1,322 places
Heat behaviour
#6,093
vs
#6,093
Tied - the same position in the database
Weight
#9,588
vs
#10,192
JKM580N-72HL4-BDV leads by 604 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#4,564
vs
#3,481
JKM620N-78HL4-BDV leads by 1,083 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: Jinko Solar JKM580N-72HL4-BDV or Jinko Solar JKM620N-78HL4-BDV?
According to our database: Jinko Solar JKM580N-72HL4-BDV has higher module efficiency (22.45% vs 22.18%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jinko Solar JKM580N-72HL4-BDV and Jinko Solar JKM620N-78HL4-BDV?
Jinko Solar JKM580N-72HL4-BDV has a module efficiency of 22.45%, while Jinko Solar JKM620N-78HL4-BDV is 22.18%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JKM580N-72HL4-BDV use vs Jinko Solar JKM620N-78HL4-BDV?
Jinko Solar JKM580N-72HL4-BDV uses N-type cells; Jinko Solar JKM620N-78HL4-BDV 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 Jinko Solar JKM580N-72HL4-BDV and Jinko Solar JKM620N-78HL4-BDV?
Jinko Solar JKM580N-72HL4-BDV has a 30 years power warranty; Jinko Solar JKM620N-78HL4-BDV 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 Jinko Solar JKM580N-72HL4-BDV and Jinko Solar JKM620N-78HL4-BDV bifacial panels?
Both Jinko Solar JKM580N-72HL4-BDV and Jinko Solar JKM620N-78HL4-BDV 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.
Shop prices: See 176 Jinko 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.