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735 vs 720 16 of 19 identical Swap Change panels

Astronergy CHSM66N(DG)/F-BH-735 vs Astronergy CHSM66N(DG)/F-BH-720

Astronergy CHSM66N(DG)/F-BH-735
CHSM66N(DG)/F-BH-735
735 Wp 23.70 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Astronergy CHSM66N(DG)/F-BH-720
CHSM66N(DG)/F-BH-720
720 Wp 23.20 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

735 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 735 720 Difference
Module efficiency 23.70 % 23.20 % 0.50 pp more efficient
Power density 236.6 Wp/m² 231.8 Wp/m² 4.8 Wp/m² higher
Rated power 735 Wp 720 Wp 15 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.
735
24,661 kWh
720
24,157 kWh
Lifetime gap
504 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 735 720
Standard test conditions 25 °C 100.0% of rated power 735 W 720 W
Cool, bright day 40 °C 95.7% of rated power 703 W 689 W
Typical summer roof 55 °C 91.3% of rated power 671 W 657 W
Hot roof 70 °C 87.0% of rated power 639 W 626 W
03

Full specification

Parameter 735 720 Difference
Power and efficiency
Rated power 735 Wp 720 Wp +15 W for 735
Module efficiency 23.70 % 23.20 % +0.50 pp for 735
Power density 236.6 Wp/m² 231.8 Wp/m² +4.8 Wp/m² for 735
Open-circuit voltage 49.77 V 49.17 V Effectively the same
Voltage at max power 41.41 V 40.81 V Effectively the same
Short-circuit current 18.72 A 18.58 A Effectively the same
Current at max power 17.75 A 17.64 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2384x1303x33 mm 2384x1303x33 mm Same
Module area 3.106 m² 3.106 m² Same
Weight 38.0 kg 38.0 kg Same
Weight per kWp 51.7 kg/kWp 52.8 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 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#517 vs #1,306
735 leads by 789 places
Power density
#582 vs #1,347
735 leads by 765 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#5,081 vs #6,459
735 leads by 1,378 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#160 vs #339
735 leads by 179 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-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 manufacturer
Astronergy CHSM66N(DG)/F-BH-735 vs Astronergy CHSM66N(DG)/F-BH-705
6 differences, the largest is module efficiency
Same manufacturer
Astronergy CHSM66N(DG)/F-BH-735 vs Astronergy CHSM66RN(DG)/F-BQ-670
12 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 CHSM66N(DG)/F-BH-720?
According to our database: Astronergy CHSM66N(DG)/F-BH-735 has higher module efficiency (23.70% vs 23.20%). 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 CHSM66N(DG)/F-BH-720?
Astronergy CHSM66N(DG)/F-BH-735 has a module efficiency of 23.70%, while Astronergy CHSM66N(DG)/F-BH-720 is 23.20%. 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 CHSM66N(DG)/F-BH-720?
Astronergy CHSM66N(DG)/F-BH-735 uses TOPCon cells; Astronergy CHSM66N(DG)/F-BH-720 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 CHSM66N(DG)/F-BH-720?
Astronergy CHSM66N(DG)/F-BH-735 has a 30 years power warranty; Astronergy CHSM66N(DG)/F-BH-720 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 CHSM66N(DG)/F-BH-720 bifacial panels?
Both Astronergy CHSM66N(DG)/F-BH-735 and Astronergy CHSM66N(DG)/F-BH-720 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.