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CHSM66N(DG)/F-BH-735 vs CHSM72N-HC-570 6 of 19 identical Swap Change panels

Astronergy CHSM66N(DG)/F-BH-735 vs Astronergy CHSM72N-HC-570

Astronergy CHSM66N(DG)/F-BH-735
CHSM66N(DG)/F-BH-735
735 Wp 23.70 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Astronergy CHSM72N-HC-570
CHSM72N-HC-570
570 Wp 22.10 % TOPCon
Open panel page Datasheet PDF
The verdict

CHSM66N(DG)/F-BH-735 leads on the differences that matter

The largest is module efficiency: 1.60 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-735 CHSM72N-HC-570 Difference
Module efficiency 23.70 % 22.10 % 1.60 pp more efficient
Rated power 735 Wp 570 Wp 165 W more power
Power density 236.6 Wp/m² 220.7 Wp/m² 16.0 Wp/m² higher
Weight 38.0 kg 26.9 kg 11.1 kg lighter
Product warranty 15 yrs 12 yrs 3 yrs longer
Short-circuit current 18.72 A 14.10 A 4.62 A apart
Module area 3.106 m² 2.583 m² 0.523 m² apart
Weight per kWp 51.7 kg/kWp 47.2 kg/kWp 4.5 kg/kWp lighter
Current at max power 17.75 A 13.45 A 4.30 A apart
Cell count 132 144 12 cells apart
Bifacial Yes No Yes vs No
Open-circuit voltage 49.77 V 50.85 V 1.08 V apart
Dimensions 2384x1303x33 mm 2278x1134x35 mm 2384x1303x33 mm vs 2278x1134x35 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-735
24,661 kWh
CHSM72N-HC-570
19,125 kWh
Lifetime gap
5,536 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario CHSM66N(DG)/F-BH-735 CHSM72N-HC-570
Standard test conditions 25 °C 100.0% of rated power 735 W 570 W
Cool, bright day 40 °C 95.7% of rated power 703 W 545 W
Typical summer roof 55 °C 91.3% of rated power 671 W 520 W
Hot roof 70 °C 87.0% of rated power 639 W 496 W
03

Full specification

Parameter CHSM66N(DG)/F-BH-735 CHSM72N-HC-570 Difference
Power and efficiency
Rated power 735 Wp 570 Wp +165 W for CHSM66N(DG)/F-BH-735
Module efficiency 23.70 % 22.10 % +1.60 pp for CHSM66N(DG)/F-BH-735
Power density 236.6 Wp/m² 220.7 Wp/m² +16.0 Wp/m² for CHSM66N(DG)/F-BH-735
Open-circuit voltage 49.77 V 50.85 V 1.08 V apart
Voltage at max power 41.41 V 42.38 V Effectively the same
Short-circuit current 18.72 A 14.10 A 4.62 A apart
Current at max power 17.75 A 13.45 A 4.30 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2384x1303x33 mm 2278x1134x35 mm 2384x1303x33 mm vs 2278x1134x35 mm
Module area 3.106 m² 2.583 m² 0.523 m² apart
Weight 38.0 kg 26.9 kg -11.1 kg for CHSM72N-HC-570
Weight per kWp 51.7 kg/kWp 47.2 kg/kWp -4.5 kg/kWp for CHSM72N-HC-570
Warranty and degradation
Product warranty 15 yrs 12 yrs +3 yrs for CHSM66N(DG)/F-BH-735
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 132 144 12 cells apart
Bifacial Yes No Yes vs No
04

Against the whole database

14,005 panels
Efficiency
#517 vs #6,012
CHSM66N(DG)/F-BH-735 leads by 5,495 places
Power density
#582 vs #6,058
CHSM66N(DG)/F-BH-735 leads by 5,476 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#5,081 vs #1,577
CHSM72N-HC-570 leads by 3,504 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#160 vs #5,137
CHSM66N(DG)/F-BH-735 leads by 4,977 places
05

More useful comparisons

Open the full database
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-735 vs Astronergy CHSM66N(DG)/F-BH-730
One difference: module efficiency
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-735 vs Astronergy CHSM66N(DG)/F-BH-725
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-735 vs Astronergy CHSM66N(DG)/F-BH-720
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-735 vs Astronergy CHSM66N(DG)/F-BH-715
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-735 vs Astronergy CHSM66N(DG)/F-BH-710
4 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM72N-HC-570 vs Astronergy CHSM72N-HC-580
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Astronergy CHSM66N(DG)/F-BH-735 or Astronergy CHSM72N-HC-570?
According to our database: Astronergy CHSM66N(DG)/F-BH-735 has higher module efficiency (23.70% vs 22.10%). 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-735 and Astronergy CHSM72N-HC-570?
Astronergy CHSM66N(DG)/F-BH-735 has a module efficiency of 23.70%, while Astronergy CHSM72N-HC-570 is 22.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Astronergy CHSM66N(DG)/F-BH-735 use vs Astronergy CHSM72N-HC-570?
Astronergy CHSM66N(DG)/F-BH-735 uses TOPCon cells; Astronergy CHSM72N-HC-570 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-735 and Astronergy CHSM72N-HC-570?
Astronergy CHSM66N(DG)/F-BH-735 has a 30 years power warranty; Astronergy CHSM72N-HC-570 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-735 and Astronergy CHSM72N-HC-570 bifacial panels?
Astronergy CHSM66N(DG)/F-BH-735 is bifacial (captures light from both faces); Astronergy CHSM72N-HC-570 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.