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540/LR vs 525/LR 16 of 19 identical Swap Change panels

JA Solar JAT60S40-540/LR vs JA Solar JAT60S40-525/LR

JA Solar JAT60S40-540/LR
JAT60S40-540/LR
540 Wp 24.40 % N-type
Open panel page Datasheet PDF
VS
JA Solar JAT60S40-525/LR
JAT60S40-525/LR
525 Wp 23.70 % N-type
Open panel page Datasheet PDF
The verdict

540/LR leads on the differences that matter

The largest is module efficiency: 0.70 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter 540/LR 525/LR Difference
Module efficiency 24.40 % 23.70 % 0.70 pp more efficient
Power density 243.8 Wp/m² 237.1 Wp/m² 6.8 Wp/m² higher
Rated power 540 Wp 525 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 (-0.260 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
540/LR
18,259 kWh
525/LR
17,752 kWh
Lifetime gap
507 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 540/LR 525/LR
Standard test conditions 25 °C 100.0% of rated power 540 W 525 W
Cool, bright day 40 °C 96.1% of rated power 519 W 505 W
Typical summer roof 55 °C 92.2% of rated power 498 W 484 W
Hot roof 70 °C 88.3% of rated power 477 W 464 W
03

Full specification

Parameter 540/LR 525/LR Difference
Power and efficiency
Rated power 540 Wp 525 Wp +15 W for 540/LR
Module efficiency 24.40 % 23.70 % +0.70 pp for 540/LR
Power density 243.8 Wp/m² 237.1 Wp/m² +6.8 Wp/m² for 540/LR
Open-circuit voltage 45.78 V 45.60 V Effectively the same
Voltage at max power 39.11 V 38.78 V Effectively the same
Short-circuit current 15.02 A 14.84 A Effectively the same
Current at max power 13.81 A 13.54 A Effectively the same
Temperature
Temperature coefficient -0.260 %/°C -0.260 %/°C Same
Mechanical
Dimensions 1953x1134x30 mm 1953x1134x30 mm Same
Module area 2.215 m² 2.215 m² Same
Weight 23.5 kg 23.5 kg Same
Weight per kWp 43.5 kg/kWp 44.8 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.35 %/yr 0.35 %/yr Same
Technology
Cell technology N-type N-type Same
Cell type Monocrystalline Monocrystalline Same
Cell count 120 120 Same
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#99 vs #517
540/LR leads by 418 places
Power density
#127 vs #519
540/LR leads by 392 places
Heat behaviour
#511 vs #511
Tied - the same position in the database
Weight
#306 vs #526
540/LR leads by 220 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,868 vs #4,239
540/LR leads by 1,371 places
05

More useful comparisons

Open the full database
Same series, other bin
JA Solar JAT60S40-540/LR vs JA Solar JAT60S40-535/LR
One difference: module efficiency
Same series, other bin
JA Solar JAT60S40-540/LR vs JA Solar JAT60S41-530/LR
4 differences, the largest is module efficiency
Same series, other bin
JA Solar JAT60S40-540/LR vs JA Solar JAT60S40-530/LR
3 differences, the largest is module efficiency
Same series, other bin
JA Solar JAT60S40-540/LR vs JA Solar JAT60S41-525/LR
4 differences, the largest is module efficiency
Same series, other bin
JA Solar JAT60S40-540/LR vs JA Solar JAT60S41-520/LR
4 differences, the largest is module efficiency
Same series, other bin
JA Solar JAT60S40-540/LR vs JA Solar JAT60S40-520/LR
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: JA Solar JAT60S40-540/LR or JA Solar JAT60S40-525/LR?
According to our database: JA Solar JAT60S40-540/LR has higher module efficiency (24.40% vs 23.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of JA Solar JAT60S40-540/LR and JA Solar JAT60S40-525/LR?
JA Solar JAT60S40-540/LR has a module efficiency of 24.40%, while JA Solar JAT60S40-525/LR is 23.70%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does JA Solar JAT60S40-540/LR use vs JA Solar JAT60S40-525/LR?
JA Solar JAT60S40-540/LR uses N-type cells; JA Solar JAT60S40-525/LR 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 JA Solar JAT60S40-540/LR and JA Solar JAT60S40-525/LR?
JA Solar JAT60S40-540/LR has a 30 years power warranty; JA Solar JAT60S40-525/LR 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 393 JA 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.