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CHSM66N(DG)/F-BH-720 vs ASTRO N5s CHSM54N-HC-435W 6 of 19 identical Swap Change panels

Astronergy CHSM66N(DG)/F-BH-720 vs Astronergy ASTRO N5s CHSM54N-HC-435W

Astronergy CHSM66N(DG)/F-BH-720
CHSM66N(DG)/F-BH-720
720 Wp 23.20 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
ASTRO N5s CHSM54N-HC-435W
435 Wp 22.30 % TOPCon
Open panel page Datasheet PDF
The verdict

CHSM66N(DG)/F-BH-720 leads on the differences that matter

The largest is module efficiency: 0.90 pp more efficient. 6 of 19 comparable parameters are identical.

See all 13 differences
How alike are they
6 of 19 comparable
parameters are identical
identical differs
01

What actually differs

13 of 19 parameters
Parameter CHSM66N(DG)/F-BH-720 ASTRO N5s CHSM54N-HC-435W Difference
Module efficiency 23.20 % 22.30 % 0.90 pp more efficient
Rated power 720 Wp 435 Wp 285 W more power
Power density 231.8 Wp/m² 222.8 Wp/m² 9.0 Wp/m² higher
Weight 38.0 kg 21.3 kg 16.7 kg lighter
Open-circuit voltage 49.17 V 38.60 V 10.57 V apart
Short-circuit current 18.58 A 14.19 A 4.39 A apart
Module area 3.106 m² 1.953 m² 1.154 m² apart
Weight per kWp 52.8 kg/kWp 49.0 kg/kWp 3.8 kg/kWp lighter
Voltage at max power 40.81 V 32.44 V 8.37 V apart
Current at max power 17.64 A 13.41 A 4.23 A apart
Cell count 132 108 24 cells apart
Bifacial Yes No Yes vs No
Dimensions 2384x1303x33 mm 1722x1134x30 mm 2384x1303x33 mm vs 1722x1134x30 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.
CHSM66N(DG)/F-BH-720
24,157 kWh
ASTRO N5s CHSM54N-HC-435W
14,595 kWh
Lifetime gap
9,562 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario CHSM66N(DG)/F-BH-720 ASTRO N5s CHSM54N-HC-435W
Standard test conditions 25 °C 100.0% of rated power 720 W 435 W
Cool, bright day 40 °C 95.7% of rated power 689 W 416 W
Typical summer roof 55 °C 91.3% of rated power 657 W 397 W
Hot roof 70 °C 87.0% of rated power 626 W 378 W
03

Full specification

Parameter CHSM66N(DG)/F-BH-720 ASTRO N5s CHSM54N-HC-435W Difference
Power and efficiency
Rated power 720 Wp 435 Wp +285 W for CHSM66N(DG)/F-BH-720
Module efficiency 23.20 % 22.30 % +0.90 pp for CHSM66N(DG)/F-BH-720
Power density 231.8 Wp/m² 222.8 Wp/m² +9.0 Wp/m² for CHSM66N(DG)/F-BH-720
Open-circuit voltage 49.17 V 38.60 V 10.57 V apart
Voltage at max power 40.81 V 32.44 V 8.37 V apart
Short-circuit current 18.58 A 14.19 A 4.39 A apart
Current at max power 17.64 A 13.41 A 4.23 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2384x1303x33 mm 1722x1134x30 mm 2384x1303x33 mm vs 1722x1134x30 mm
Module area 3.106 m² 1.953 m² 1.154 m² apart
Weight 38.0 kg 21.3 kg -16.7 kg for ASTRO N5s CHSM54N-HC-435W
Weight per kWp 52.8 kg/kWp 49.0 kg/kWp -3.8 kg/kWp for ASTRO N5s CHSM54N-HC-435W
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 132 108 24 cells apart
Bifacial Yes No Yes vs No
04

Against the whole database

14,005 panels
Efficiency
#1,306 vs #5,100
CHSM66N(DG)/F-BH-720 leads by 3,794 places
Power density
#1,347 vs #5,150
CHSM66N(DG)/F-BH-720 leads by 3,803 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#6,459 vs #2,656
ASTRO N5s CHSM54N-HC-435W leads by 3,803 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#339 vs #9,115
CHSM66N(DG)/F-BH-720 leads by 8,776 places
05

More useful comparisons

Open the full database
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-720 vs Astronergy CHSM66N(DG)/F-BH-735
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-720 vs Astronergy CHSM66N(DG)/F-BH-730
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-720 vs Astronergy CHSM66N(DG)/F-BH-725
The same specification on paper
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-720 vs Astronergy CHSM66N(DG)/F-BH-715
One difference: module efficiency
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-720 vs Astronergy CHSM66N(DG)/F-BH-710
3 differences, the largest is module efficiency
Same series, other bin
Astronergy ASTRO N5s CHSM54N-HC-435W vs Astronergy CHSM54N-HC-445
4 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Astronergy CHSM66N(DG)/F-BH-720 or Astronergy ASTRO N5s CHSM54N-HC-435W?
According to our database: Astronergy CHSM66N(DG)/F-BH-720 has higher module efficiency (23.20% vs 22.30%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Astronergy CHSM66N(DG)/F-BH-720 and Astronergy ASTRO N5s CHSM54N-HC-435W?
Astronergy CHSM66N(DG)/F-BH-720 has a module efficiency of 23.20%, while Astronergy ASTRO N5s CHSM54N-HC-435 W is 22.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Astronergy CHSM66N(DG)/F-BH-720 use vs Astronergy ASTRO N5s CHSM54N-HC-435W?
Astronergy CHSM66N(DG)/F-BH-720 uses TOPCon cells; Astronergy ASTRO N5s CHSM54N-HC-435 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 CHSM66N(DG)/F-BH-720 and Astronergy ASTRO N5s CHSM54N-HC-435W?
Astronergy CHSM66N(DG)/F-BH-720 has a 30 years power warranty; Astronergy ASTRO N5s CHSM54N-HC-435 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.
Are Astronergy CHSM66N(DG)/F-BH-720 and Astronergy ASTRO N5s CHSM54N-HC-435W bifacial panels?
Astronergy CHSM66N(DG)/F-BH-720 is bifacial (captures light from both faces); Astronergy ASTRO N5s CHSM54N-HC-435 W is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Shop prices: See 40 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.