JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs JKM590N-72HL4-(V) 9 of 19 identical Swap Change panels

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM590N-72HL4-(V)

Q: Which panel is better: Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) or Jinko Solar JKM590N-72HL4-(V)?

According to our database: Jinko Solar JKM590N-72HL4-(V) has higher module efficiency (22.84% vs 22.18%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) and Jinko Solar JKM590N-72HL4-(V)?

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) has a module efficiency of 22.18%, while Jinko Solar JKM590N-72HL4-(V) is 22.84%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) use vs Jinko Solar JKM590N-72HL4-(V)?

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) uses N-type cells; Jinko Solar JKM590N-72HL4-(V) uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.

Q: What is the warranty on Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) and Jinko Solar JKM590N-72HL4-(V)?

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) has a 30 years power warranty; Jinko Solar JKM590N-72HL4-(V) 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.

JKM615-635N-78HL4-(V)-F6-EN (620W variant)

620 Wp 22.18 % N-type

Open panel page Datasheet PDF

JKM590N-72HL4-(V)

590 Wp 22.84 % TOPCon

Open panel page Datasheet PDF

The verdict

JKM590N-72HL4-(V) leads on the differences that matter

The largest is module efficiency: 0.66 pp more efficient. 9 of 19 comparable parameters are identical.

See all 10 differences

How alike are they

9 of 19 comparable
parameters are identical

identical differs

What actually differs

10 of 19 parameters

Parameter JKM615-635N-78HL4-(V)-F6-EN (620W variant) JKM590N-72HL4-(V) Difference

Module efficiency 22.18 % 22.84 % 0.66 pp more efficient

Rated power 620 Wp 590 Wp 30 W more power

Power density 221.8 Wp/m² 228.4 Wp/m² 6.6 Wp/m² higher

Module area 2.795 m² 2.583 m² 0.212 m² apart

Open-circuit voltage 56.40 V 52.63 V 3.77 V apart

Weight 29.5 kg 27.0 kg 2.5 kg lighter

Cell technology N-type TOPCon N-type vs TOPCon

Cell count 156 144 12 cells apart

Voltage at max power 46.97 V 43.71 V 3.26 V apart

Dimensions 2465x1134x35 mm 2278x1134x30 mm 2465x1134x35 mm vs 2278x1134x30 mm

What it means on a roof

Thirty years of production

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

Cell temperature

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.

JKM615-635N-78HL4-(V)-F6-EN (620W variant)

20,802 kWh

JKM590N-72HL4-(V)

19,796 kWh

Lifetime gap

1,006 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario JKM615-635N-78HL4-(V)-F6-EN (620W variant) JKM590N-72HL4-(V)

Standard test conditions 25 °C 100.0% of rated power 620 W 590 W

Cool, bright day 40 °C 95.7% of rated power 593 W 564 W

Typical summer roof 55 °C 91.3% of rated power 566 W 539 W

Hot roof 70 °C 87.0% of rated power 539 W 513 W

Full specification

Parameter JKM615-635N-78HL4-(V)-F6-EN (620W variant) JKM590N-72HL4-(V) Difference

Power and efficiency

Rated power 620 Wp 590 Wp +30 W for JKM615-635N-78HL4-(V)-F6-EN (620W variant)

Module efficiency 22.18 % 22.84 % +0.66 pp for JKM590N-72HL4-(V)

Power density 221.8 Wp/m² 228.4 Wp/m² +6.6 Wp/m² for JKM590N-72HL4-(V)

Open-circuit voltage 56.40 V 52.63 V 3.77 V apart

Voltage at max power 46.97 V 43.71 V 3.26 V apart

Short-circuit current 13.86 A 14.13 A Effectively the same

Current at max power 13.20 A 13.50 A Effectively the same

Temperature

Temperature coefficient -0.290 %/°C -0.290 %/°C Same

Mechanical

Dimensions 2465x1134x35 mm 2278x1134x30 mm 2465x1134x35 mm vs 2278x1134x30 mm

Module area 2.795 m² 2.583 m² 0.212 m² apart

Weight 29.5 kg 27.0 kg -2.5 kg for JKM590N-72HL4-(V)

Weight per kWp 47.6 kg/kWp 45.8 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 0.40 %/yr Same

Technology

Cell technology N-type TOPCon N-type vs TOPCon

Cell type Monocrystalline Monocrystalline Same

Cell count 156 144 12 cells apart

Bifacial No No Same

Against the whole database

14,129 panels

Efficiency

#5,994 vs #2,672

JKM590N-72HL4-(V) leads by 3,322 places

Power density

#5,933 vs #2,653

JKM590N-72HL4-(V) leads by 3,280 places

Heat behaviour

#2,220 vs #2,220

Tied - the same position in the database

Weight

#1,762 vs #872

JKM590N-72HL4-(V) leads by 890 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#3,410 vs #3,665

JKM615-635N-78HL4-(V)-F6-EN (620W variant) leads by 255 places

More useful comparisons

Open the full database

Same series, other bin

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (635W variant)

3 differences, the largest is module efficiency

Same series, other bin

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (630W variant)

3 differences, the largest is module efficiency

Same series, other bin

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (625W variant)

The same specification on paper

Same series, other bin

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) vs Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (615W variant)

The same specification on paper

Same series, other bin

Jinko Solar JKM590N-72HL4-(V) vs Jinko Solar JKM605N-72HL4-(V)

3 differences, the largest is module efficiency

Same series, other bin

Jinko Solar JKM590N-72HL4-(V) vs Jinko Solar JKM600N-72HL4-(V)

3 differences, the largest is module efficiency

Written summary

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Questions about this pairing

Which panel is better: Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) or Jinko Solar JKM590N-72HL4-(V)?

According to our database: Jinko Solar JKM590N-72HL4-(V) has higher module efficiency (22.84% 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 JKM615-635N-78HL4-(V)-F6-EN (620W variant) and Jinko Solar JKM590N-72HL4-(V)?

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620 W variant) has a module efficiency of 22.18%, while Jinko Solar JKM590N-72HL4-(V) is 22.84%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620W variant) use vs Jinko Solar JKM590N-72HL4-(V)?

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620 W variant) uses N-type cells; Jinko Solar JKM590N-72HL4-(V) 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 JKM615-635N-78HL4-(V)-F6-EN (620W variant) and Jinko Solar JKM590N-72HL4-(V)?

Jinko Solar JKM615-635N-78HL4-(V)-F6-EN (620 W variant) has a 30 years power warranty; Jinko Solar JKM590N-72HL4-(V) 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.

Shop prices: See 145 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.