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JKM575-600N-72HL4-BDV (580W) vs JKM645N-78HL4-BDV-F9-EU 10 of 19 identical Swap Change panels

Jinko Solar JKM575-600N-72HL4-BDV (580W) vs Jinko Solar JKM645N-78HL4-BDV-F9-EU

Jinko Solar JKM575-600N-72HL4-BDV (580W)
JKM575-600N-72HL4-BDV (580W)
580 Wp 22.45 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Jinko Solar JKM645N-78HL4-BDV-F9-EU
JKM645N-78HL4-BDV-F9-EU
645 Wp 23.07 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

JKM645N-78HL4-BDV-F9-EU leads on the differences that matter

The largest is rated power: 65 W more power. 10 of 19 comparable parameters are identical.

See all 9 differences
How alike are they
10 of 19 comparable
parameters are identical
identical differs
01

What actually differs

9 of 19 parameters
Parameter JKM575-600N-72HL4-BDV (580W) JKM645N-78HL4-BDV-F9-EU Difference
Rated power 580 Wp 645 Wp 65 W more power
Module efficiency 22.45 % 23.07 % 0.62 pp more efficient
Weight 31.0 kg 34.0 kg 3.0 kg lighter
Power density 224.5 Wp/m² 230.7 Wp/m² 6.2 Wp/m² higher
Open-circuit voltage 52.50 V 57.47 V 4.97 V apart
Module area 2.583 m² 2.795 m² 0.212 m² apart
Voltage at max power 43.88 V 48.17 V 4.29 V apart
Cell count 144 156 12 cells apart
Dimensions 2278x1134x30 mm 2465x1134x30 mm 2278x1134x30 mm vs 2465x1134x30 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
Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
JKM575-600N-72HL4-BDV (580W)
19,460 kWh
JKM645N-78HL4-BDV-F9-EU
21,641 kWh
Lifetime gap
2,181 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JKM575-600N-72HL4-BDV (580W) JKM645N-78HL4-BDV-F9-EU
Standard test conditions 25 °C 100.0% of rated power 580 W 645 W
Cool, bright day 40 °C 95.7% of rated power 555 W 617 W
Typical summer roof 55 °C 91.3% of rated power 530 W 589 W
Hot roof 70 °C 87.0% of rated power 504 W 561 W
03

Full specification

Parameter JKM575-600N-72HL4-BDV (580W) JKM645N-78HL4-BDV-F9-EU Difference
Power and efficiency
Rated power 580 Wp 645 Wp +65 W for JKM645N-78HL4-BDV-F9-EU
Module efficiency 22.45 % 23.07 % +0.62 pp for JKM645N-78HL4-BDV-F9-EU
Power density 224.5 Wp/m² 230.7 Wp/m² +6.2 Wp/m² for JKM645N-78HL4-BDV-F9-EU
Open-circuit voltage 52.50 V 57.47 V 4.97 V apart
Voltage at max power 43.88 V 48.17 V 4.29 V apart
Short-circuit current 13.95 A 14.04 A Effectively the same
Current at max power 13.22 A 13.39 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°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 31.0 kg 34.0 kg -3.0 kg for JKM575-600N-72HL4-BDV (580W)
Weight per kWp 53.4 kg/kWp 52.7 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 0.40 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 144 156 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#4,620 vs #1,683
JKM645N-78HL4-BDV-F9-EU leads by 2,937 places
Power density
#4,547 vs #1,654
JKM645N-78HL4-BDV-F9-EU leads by 2,893 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#7,379 vs #6,362
JKM645N-78HL4-BDV-F9-EU leads by 1,017 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#4,527 vs #1,852
JKM645N-78HL4-BDV-F9-EU leads by 2,675 places
05

More useful comparisons

Open the full database
Same series, other bin
Jinko Solar JKM575-600N-72HL4-BDV (580W) vs Jinko Solar JKM625-650N-78HL4-BDV (650W)
9 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM575-600N-72HL4-BDV (580W) vs Jinko Solar JKM625-650N-78HL4-BDV
9 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM575-600N-72HL4-BDV (580W) vs Jinko Solar JKM650N-78HL4-BDV-F9-EU
9 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM575-600N-72HL4-BDV (580W) vs Jinko Solar JKM650N-78HL4-BDV
9 differences, the largest is module efficiency
Same series, other bin
Jinko Solar JKM575-600N-72HL4-BDV (580W) vs Jinko Solar JKM625-650N-78HL4-BDV (645W)
9 differences, the largest is rated power
Same series, other bin
Jinko Solar JKM575-600N-72HL4-BDV (580W) vs Jinko Solar JKM645N-78HL4-BDV
9 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Jinko Solar JKM575-600N-72HL4-BDV (580W) or Jinko Solar JKM645N-78HL4-BDV-F9-EU?
According to our database: Jinko Solar JKM645N-78HL4-BDV-F9-EU has higher module efficiency (23.07% vs 22.45%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jinko Solar JKM575-600N-72HL4-BDV (580W) and Jinko Solar JKM645N-78HL4-BDV-F9-EU?
Jinko Solar JKM575-600N-72HL4-BDV (580 W) has a module efficiency of 22.45%, while Jinko Solar JKM645N-78HL4-BDV-F9-EU is 23.07%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JKM575-600N-72HL4-BDV (580W) use vs Jinko Solar JKM645N-78HL4-BDV-F9-EU?
Jinko Solar JKM575-600N-72HL4-BDV (580 W) uses TOPCon cells; Jinko Solar JKM645N-78HL4-BDV-F9-EU uses TOPCon. 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 JKM575-600N-72HL4-BDV (580W) and Jinko Solar JKM645N-78HL4-BDV-F9-EU?
Jinko Solar JKM575-600N-72HL4-BDV (580 W) has a 30 years power warranty; Jinko Solar JKM645N-78HL4-BDV-F9-EU 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 JKM575-600N-72HL4-BDV (580W) and Jinko Solar JKM645N-78HL4-BDV-F9-EU bifacial panels?
Both Jinko Solar JKM575-600N-72HL4-BDV (580 W) and Jinko Solar JKM645N-78HL4-BDV-F9-EU 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 170 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.