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JAM54D41-455/LR vs CHSM54N(BL)-HC 420W 9 of 19 identical Swap Change panels

JA Solar JAM54D41-455/LR vs Astronergy CHSM54N(BL)-HC 420W

JA Solar JAM54D41-455/LR
JAM54D41-455/LR
455 Wp 22.80 % TOPCon
Open panel page Datasheet PDF
VS
Astronergy CHSM54N(BL)-HC 420W
CHSM54N(BL)-HC 420W
420 Wp 21.50 % TOPCon
Open panel page Datasheet PDF
The verdict

JAM54D41-455/LR leads on the differences that matter

The largest is module efficiency: 1.30 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
01

What actually differs

10 of 19 parameters
Parameter JAM54D41-455/LR CHSM54N(BL)-HC 420W Difference
Module efficiency 22.80 % 21.50 % 1.30 pp more efficient
Power density 227.7 Wp/m² 215.1 Wp/m² 12.6 Wp/m² higher
Rated power 455 Wp 420 Wp 35 W more power
Open-circuit voltage 40.50 V 38.00 V 2.50 V apart
Module area 1.998 m² 1.953 m² 0.045 m² apart
Weight per kWp 48.4 kg/kWp 50.7 kg/kWp 2.4 kg/kWp lighter
Short-circuit current 14.42 A 13.87 A 0.55 A apart
Dimensions 1762x1134x30 mm 1722x1134x30 mm 1762x1134x30 mm vs 1722x1134x30 mm
Voltage at max power 33.33 V 31.93 V 1.40 V apart
Current at max power 13.65 A 13.15 A 0.50 A apart
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.
JAM54D41-455/LR
15,266 kWh
CHSM54N(BL)-HC 420W
14,092 kWh
Lifetime gap
1,174 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JAM54D41-455/LR CHSM54N(BL)-HC 420W
Standard test conditions 25 °C 100.0% of rated power 455 W 420 W
Cool, bright day 40 °C 95.7% of rated power 435 W 402 W
Typical summer roof 55 °C 91.3% of rated power 415 W 383 W
Hot roof 70 °C 87.0% of rated power 396 W 365 W
03

Full specification

Parameter JAM54D41-455/LR CHSM54N(BL)-HC 420W Difference
Power and efficiency
Rated power 455 Wp 420 Wp +35 W for JAM54D41-455/LR
Module efficiency 22.80 % 21.50 % +1.30 pp for JAM54D41-455/LR
Power density 227.7 Wp/m² 215.1 Wp/m² +12.6 Wp/m² for JAM54D41-455/LR
Open-circuit voltage 40.50 V 38.00 V 2.50 V apart
Voltage at max power 33.33 V 31.93 V 1.40 V apart
Short-circuit current 14.42 A 13.87 A 0.55 A apart
Current at max power 13.65 A 13.15 A 0.50 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1762x1134x30 mm 1722x1134x30 mm 1762x1134x30 mm vs 1722x1134x30 mm
Module area 1.998 m² 1.953 m² 0.045 m² apart
Weight 22.0 kg 21.3 kg Effectively the same
Weight per kWp 48.4 kg/kWp 50.7 kg/kWp -2.4 kg/kWp for JAM54D41-455/LR
Warranty and degradation
Product warranty 15 yrs 15 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 108 108 Same
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#2,714 vs #7,958
JAM54D41-455/LR leads by 5,244 places
Power density
#2,888 vs #7,882
JAM54D41-455/LR leads by 4,994 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#2,220 vs #4,124
JAM54D41-455/LR leads by 1,904 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#7,813 vs #10,214
JAM54D41-455/LR leads by 2,401 places
05

More useful comparisons

Open the full database
Same series, other bin
JA Solar JAM54D41-455/LR vs JA Solar JAM54D41-450/LR
One difference: module efficiency
Same series, other bin
JA Solar JAM54D41-455/LR vs JA Solar JAM54D41-445/LR
4 differences, the largest is module efficiency
Same series, other bin
JA Solar JAM54D41-455/LR vs JA Solar JAM54D41-440/LR
4 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM54N(BL)-HC 420W vs Astronergy CHSM54N-HC-445
7 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM54N(BL)-HC 420W vs Astronergy CHSM54N-HC-445W
6 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM54N(BL)-HC 420W vs Astronergy ASTRO N5s CHSM54N-HC-445W
6 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: JA Solar JAM54D41-455/LR or Astronergy CHSM54N(BL)-HC 420W?
According to our database: JA Solar JAM54D41-455/LR has higher module efficiency (22.80% vs 21.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of JA Solar JAM54D41-455/LR and Astronergy CHSM54N(BL)-HC 420W?
JA Solar JAM54D41-455/LR has a module efficiency of 22.80%, while Astronergy CHSM54N(BL)-HC 420 W is 21.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does JA Solar JAM54D41-455/LR use vs Astronergy CHSM54N(BL)-HC 420W?
JA Solar JAM54D41-455/LR uses TOPCon cells; Astronergy CHSM54N(BL)-HC 420 W 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 JA Solar JAM54D41-455/LR and Astronergy CHSM54N(BL)-HC 420W?
JA Solar JAM54D41-455/LR has a 30 years power warranty; Astronergy CHSM54N(BL)-HC 420 W 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.
Compare JA Solar and Astronergy as manufacturers Portfolio, efficiency, cell technologies and warranty terms

Shop prices: See 384 JA Solar offers · See 41 Astronergy 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.