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CHSM78N(DG)/F-BH-650 vs ASTRO N5s CHSM54N-HC-435W 8 of 19 identical Swap Change panels

Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy ASTRO N5s CHSM54N-HC-435W

Astronergy CHSM78N(DG)/F-BH-650
CHSM78N(DG)/F-BH-650
650 Wp 23.30 % 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

CHSM78N(DG)/F-BH-650 leads on the differences that matter

The largest is module efficiency: 1.00 pp more efficient. 8 of 19 comparable parameters are identical.

See all 11 differences
How alike are they
8 of 19 comparable
parameters are identical
identical differs
01

What actually differs

11 of 19 parameters
Parameter CHSM78N(DG)/F-BH-650 ASTRO N5s CHSM54N-HC-435W Difference
Module efficiency 23.30 % 22.30 % 1.00 pp more efficient
Rated power 650 Wp 435 Wp 215 W more power
Power density 232.5 Wp/m² 222.8 Wp/m² 9.8 Wp/m² higher
Weight 34.7 kg 21.3 kg 13.4 kg lighter
Open-circuit voltage 57.01 V 38.60 V 18.41 V apart
Module area 2.795 m² 1.953 m² 0.843 m² apart
Weight per kWp 53.4 kg/kWp 49.0 kg/kWp 4.4 kg/kWp lighter
Voltage at max power 47.12 V 32.44 V 14.68 V apart
Cell count 156 108 48 cells apart
Bifacial Yes No Yes vs No
Dimensions 2465x1134x30 mm 1722x1134x30 mm 2465x1134x30 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.
CHSM78N(DG)/F-BH-650
21,809 kWh
ASTRO N5s CHSM54N-HC-435W
14,595 kWh
Lifetime gap
7,214 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario CHSM78N(DG)/F-BH-650 ASTRO N5s CHSM54N-HC-435W
Standard test conditions 25 °C 100.0% of rated power 650 W 435 W
Cool, bright day 40 °C 95.7% of rated power 622 W 416 W
Typical summer roof 55 °C 91.3% of rated power 593 W 397 W
Hot roof 70 °C 87.0% of rated power 565 W 378 W
03

Full specification

Parameter CHSM78N(DG)/F-BH-650 ASTRO N5s CHSM54N-HC-435W Difference
Power and efficiency
Rated power 650 Wp 435 Wp +215 W for CHSM78N(DG)/F-BH-650
Module efficiency 23.30 % 22.30 % +1.00 pp for CHSM78N(DG)/F-BH-650
Power density 232.5 Wp/m² 222.8 Wp/m² +9.8 Wp/m² for CHSM78N(DG)/F-BH-650
Open-circuit voltage 57.01 V 38.60 V 18.41 V apart
Voltage at max power 47.12 V 32.44 V 14.68 V apart
Short-circuit current 14.51 A 14.19 A Effectively the same
Current at max power 13.80 A 13.41 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2465x1134x30 mm 1722x1134x30 mm 2465x1134x30 mm vs 1722x1134x30 mm
Module area 2.795 m² 1.953 m² 0.843 m² apart
Weight 34.7 kg 21.3 kg -13.4 kg for ASTRO N5s CHSM54N-HC-435W
Weight per kWp 53.4 kg/kWp 49.0 kg/kWp -4.4 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 156 108 48 cells apart
Bifacial Yes No Yes vs No
04

Against the whole database

14,005 panels
Efficiency
#1,017 vs #5,100
CHSM78N(DG)/F-BH-650 leads by 4,083 places
Power density
#1,222 vs #5,150
CHSM78N(DG)/F-BH-650 leads by 3,928 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#7,283 vs #2,656
ASTRO N5s CHSM54N-HC-435W leads by 4,627 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#1,318 vs #9,115
CHSM78N(DG)/F-BH-650 leads by 7,797 places
05

More useful comparisons

Open the full database
Same series, other bin
Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH 650W
One difference: voltage at max power
Same series, other bin
Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH-650W
The same specification on paper
Same series, other bin
Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH-645
One difference: module efficiency
Same series, other bin
Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH 645W
One difference: module efficiency
Same series, other bin
Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH-645W
One difference: module efficiency
Same series, other bin
Astronergy CHSM78N(DG)/F-BH-650 vs Astronergy CHSM78N(DG)/F-BH-640
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Astronergy CHSM78N(DG)/F-BH-650 or Astronergy ASTRO N5s CHSM54N-HC-435W?
According to our database: Astronergy CHSM78N(DG)/F-BH-650 has higher module efficiency (23.30% vs 22.30%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Astronergy CHSM78N(DG)/F-BH-650 and Astronergy ASTRO N5s CHSM54N-HC-435W?
Astronergy CHSM78N(DG)/F-BH-650 has a module efficiency of 23.30%, 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 CHSM78N(DG)/F-BH-650 use vs Astronergy ASTRO N5s CHSM54N-HC-435W?
Astronergy CHSM78N(DG)/F-BH-650 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 CHSM78N(DG)/F-BH-650 and Astronergy ASTRO N5s CHSM54N-HC-435W?
Astronergy CHSM78N(DG)/F-BH-650 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 CHSM78N(DG)/F-BH-650 and Astronergy ASTRO N5s CHSM54N-HC-435W bifacial panels?
Astronergy CHSM78N(DG)/F-BH-650 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.

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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.