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435W vs 445W 16 of 19 identical Swap Change panels

Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy ASTRO N5s CHSM54N-HC-445W

ASTRO N5s CHSM54N-HC-435W
435 Wp 22.30 % TOPCon
Open panel page Datasheet PDF
VS
ASTRO N5s CHSM54N-HC-445W
445 Wp 22.80 % TOPCon
Open panel page Datasheet PDF
The verdict

445W leads on the differences that matter

The largest is module efficiency: 0.50 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 435W 445W Difference
Module efficiency 22.30 % 22.80 % 0.50 pp more efficient
Power density 222.8 Wp/m² 227.9 Wp/m² 5.1 Wp/m² higher
Rated power 435 Wp 445 Wp 10 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 (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
435W
14,595 kWh
445W
14,931 kWh
Lifetime gap
336 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 435W 445W
Standard test conditions 25 °C 100.0% of rated power 435 W 445 W
Cool, bright day 40 °C 95.7% of rated power 416 W 426 W
Typical summer roof 55 °C 91.3% of rated power 397 W 406 W
Hot roof 70 °C 87.0% of rated power 378 W 387 W
03

Full specification

Parameter 435W 445W Difference
Power and efficiency
Rated power 435 Wp 445 Wp +10 W for 445W
Module efficiency 22.30 % 22.80 % +0.50 pp for 445W
Power density 222.8 Wp/m² 227.9 Wp/m² +5.1 Wp/m² for 445W
Open-circuit voltage 38.60 V 39.00 V Effectively the same
Voltage at max power 32.44 V 32.77 V Effectively the same
Short-circuit current 14.19 A 14.41 A Effectively the same
Current at max power 13.41 A 13.58 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1722x1134x30 mm 1722x1134x30 mm Same
Module area 1.953 m² 1.953 m² Same
Weight 21.3 kg 21.3 kg Same
Weight per kWp 49.0 kg/kWp 47.9 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/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
#5,100 vs #2,714
445W leads by 2,386 places
Power density
#5,150 vs #2,790
445W leads by 2,360 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#2,656 vs #1,948
445W leads by 708 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#9,115 vs #8,168
445W leads by 947 places
05

More useful comparisons

Open the full database
Same series, other bin
Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM54N-HC-445
4 differences, the largest is module efficiency
Same series, other bin
Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM54N-HC-445W
3 differences, the largest is module efficiency
Same series, other bin
Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM54N-HC-440
2 differences, the largest is cell technology
Same series, other bin
Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM54N-HC-440W
One difference: module efficiency
Same series, other bin
Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM54N(BL)-HC 440W
One difference: module efficiency
Same series, other bin
Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy ASTRO N5s CHSM54N-HC-440W
One difference: module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Astronergy ASTRO N5s CHSM54N-HC-435W or Astronergy ASTRO N5s CHSM54N-HC-445W?
According to our database: Astronergy ASTRO N5s CHSM54N-HC-445 W has higher module efficiency (22.80% vs 22.30%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Astronergy ASTRO N5s CHSM54N-HC-435W and Astronergy ASTRO N5s CHSM54N-HC-445W?
Astronergy ASTRO N5s CHSM54N-HC-435 W has a module efficiency of 22.30%, while Astronergy ASTRO N5s CHSM54N-HC-445 W is 22.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Astronergy ASTRO N5s CHSM54N-HC-435W use vs Astronergy ASTRO N5s CHSM54N-HC-445W?
Astronergy ASTRO N5s CHSM54N-HC-435 W uses TOPCon cells; Astronergy ASTRO N5s CHSM54N-HC-445 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 Astronergy ASTRO N5s CHSM54N-HC-435W and Astronergy ASTRO N5s CHSM54N-HC-445W?
Astronergy ASTRO N5s CHSM54N-HC-435 W has a 30 years power warranty; Astronergy ASTRO N5s CHSM54N-HC-445 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.

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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.