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CHSM54RNs(DG)(BLH)/F-BH-450W vs CHSM78N(DG)/F-BH-650W 8 of 19 identical Swap Change panels

Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM78N(DG)/F-BH-650W

CHSM54RNs(DG)(BLH)/F-BH-450W
450 Wp 22.50 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
CHSM78N(DG)/F-BH-650W
650 Wp 23.30 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

11 differences, and they point both ways

The largest is module efficiency: 0.80 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 CHSM54RNs(DG)(BLH)/F-BH-450W CHSM78N(DG)/F-BH-650W Difference
Module efficiency 22.50 % 23.30 % 0.80 pp more efficient
Rated power 450 Wp 650 Wp 200 W more power
Weight 21.5 kg 34.7 kg 13.2 kg lighter
Product warranty 25 yrs 15 yrs 10 yrs longer
Power density 225.2 Wp/m² 232.5 Wp/m² 7.3 Wp/m² higher
Weight per kWp 47.8 kg/kWp 53.4 kg/kWp 5.6 kg/kWp lighter
Open-circuit voltage 39.40 V 57.01 V 17.61 V apart
Module area 1.998 m² 2.795 m² 0.797 m² apart
Voltage at max power 33.39 V 47.12 V 13.73 V apart
Cell count 108 156 48 cells apart
Dimensions 1762x1134x30 mm 2465x1134x30 mm 1762x1134x30 mm vs 2465x1134x30 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.
CHSM54RNs(DG)(BLH)/F-BH-450W
15,098 kWh
CHSM78N(DG)/F-BH-650W
21,809 kWh
Lifetime gap
6,711 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario CHSM54RNs(DG)(BLH)/F-BH-450W CHSM78N(DG)/F-BH-650W
Standard test conditions 25 °C 100.0% of rated power 450 W 650 W
Cool, bright day 40 °C 95.7% of rated power 430 W 622 W
Typical summer roof 55 °C 91.3% of rated power 411 W 593 W
Hot roof 70 °C 87.0% of rated power 391 W 565 W
03

Full specification

Parameter CHSM54RNs(DG)(BLH)/F-BH-450W CHSM78N(DG)/F-BH-650W Difference
Power and efficiency
Rated power 450 Wp 650 Wp +200 W for CHSM78N(DG)/F-BH-650W
Module efficiency 22.50 % 23.30 % +0.80 pp for CHSM78N(DG)/F-BH-650W
Power density 225.2 Wp/m² 232.5 Wp/m² +7.3 Wp/m² for CHSM78N(DG)/F-BH-650W
Open-circuit voltage 39.40 V 57.01 V 17.61 V apart
Voltage at max power 33.39 V 47.12 V 13.73 V apart
Short-circuit current 14.28 A 14.51 A Effectively the same
Current at max power 13.48 A 13.80 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1762x1134x30 mm 2465x1134x30 mm 1762x1134x30 mm vs 2465x1134x30 mm
Module area 1.998 m² 2.795 m² 0.797 m² apart
Weight 21.5 kg 34.7 kg -13.2 kg for CHSM54RNs(DG)(BLH)/F-BH-450W
Weight per kWp 47.8 kg/kWp 53.4 kg/kWp -5.6 kg/kWp for CHSM54RNs(DG)(BLH)/F-BH-450W
Warranty and degradation
Product warranty 25 yrs 15 yrs +10 yrs for CHSM54RNs(DG)(BLH)/F-BH-450W
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 108 156 48 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#4,222 vs #1,017
CHSM78N(DG)/F-BH-650W leads by 3,205 places
Power density
#4,225 vs #1,222
CHSM78N(DG)/F-BH-650W leads by 3,003 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#1,891 vs #7,283
CHSM54RNs(DG)(BLH)/F-BH-450W leads by 5,392 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,062 vs #1,318
CHSM78N(DG)/F-BH-650W leads by 4,744 places
05

More useful comparisons

Open the full database
Same series, other bin
Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-460W
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-455W
One difference: module efficiency
Same series, other bin
Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-445W
One difference: module efficiency
Same series, other bin
Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-440W
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM78N(DG)/F-BH-650W vs Astronergy CHSM78N(DG)/F-BH 650W
One difference: voltage at max power
Same series, other bin
Astronergy CHSM78N(DG)/F-BH-650W vs Astronergy CHSM78N(DG)/F-BH 645W
One difference: module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W or Astronergy CHSM78N(DG)/F-BH-650W?
According to our database: Astronergy CHSM78N(DG)/F-BH-650 W has higher module efficiency (23.30% vs 22.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W and Astronergy CHSM78N(DG)/F-BH-650W?
Astronergy CHSM54RNs(DG)(BLH)/F-BH-450 W has a module efficiency of 22.50%, while Astronergy CHSM78N(DG)/F-BH-650 W is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W use vs Astronergy CHSM78N(DG)/F-BH-650W?
Astronergy CHSM54RNs(DG)(BLH)/F-BH-450 W uses TOPCon cells; Astronergy CHSM78N(DG)/F-BH-650 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 CHSM54RNs(DG)(BLH)/F-BH-450W and Astronergy CHSM78N(DG)/F-BH-650W?
Astronergy CHSM54RNs(DG)(BLH)/F-BH-450 W has a 30 years power warranty; Astronergy CHSM78N(DG)/F-BH-650 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 CHSM54RNs(DG)(BLH)/F-BH-450W and Astronergy CHSM78N(DG)/F-BH-650W bifacial panels?
Both Astronergy CHSM54RNs(DG)(BLH)/F-BH-450 W and Astronergy CHSM78N(DG)/F-BH-650 W are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.

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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.