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CHSM54RN(DG)/F-BH-515 vs CHSM66N(DG)/F-BH-725 9 of 19 identical Swap Change panels

Astronergy CHSM54RN(DG)/F-BH-515 vs Astronergy CHSM66N(DG)/F-BH-725

Astronergy CHSM54RN(DG)/F-BH-515
CHSM54RN(DG)/F-BH-515
515 Wp 23.20 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Astronergy CHSM66N(DG)/F-BH-725
CHSM66N(DG)/F-BH-725
725 Wp 23.30 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

CHSM54RN(DG)/F-BH-515 leads on the differences that matter

The largest is rated power: 210 W more power. 9 of 19 comparable parameters are identical.

See all 10 differences
How alike are they
9 of 19 comparable
parameters are identical
identical differs
01

What actually differs

10 of 19 parameters
Parameter CHSM54RN(DG)/F-BH-515 CHSM66N(DG)/F-BH-725 Difference
Rated power 515 Wp 725 Wp 210 W more power
Weight 26.9 kg 38.0 kg 11.1 kg lighter
Product warranty 25 yrs 15 yrs 10 yrs longer
Open-circuit voltage 41.37 V 49.37 V 8.00 V apart
Short-circuit current 15.79 A 18.63 A 2.84 A apart
Module area 2.224 m² 3.106 m² 0.883 m² apart
Voltage at max power 34.42 V 40.98 V 6.56 V apart
Current at max power 14.96 A 17.69 A 2.73 A apart
Cell count 108 132 24 cells apart
Dimensions 1961x1134x30 mm 2384x1303x33 mm 1961x1134x30 mm vs 2384x1303x33 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.
CHSM54RN(DG)/F-BH-515
17,279 kWh
CHSM66N(DG)/F-BH-725
24,325 kWh
Lifetime gap
7,046 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario CHSM54RN(DG)/F-BH-515 CHSM66N(DG)/F-BH-725
Standard test conditions 25 °C 100.0% of rated power 515 W 725 W
Cool, bright day 40 °C 95.7% of rated power 493 W 693 W
Typical summer roof 55 °C 91.3% of rated power 470 W 662 W
Hot roof 70 °C 87.0% of rated power 448 W 630 W
03

Full specification

Parameter CHSM54RN(DG)/F-BH-515 CHSM66N(DG)/F-BH-725 Difference
Power and efficiency
Rated power 515 Wp 725 Wp +210 W for CHSM66N(DG)/F-BH-725
Module efficiency 23.20 % 23.30 % Effectively the same
Power density 231.6 Wp/m² 233.4 Wp/m² Effectively the same
Open-circuit voltage 41.37 V 49.37 V 8.00 V apart
Voltage at max power 34.42 V 40.98 V 6.56 V apart
Short-circuit current 15.79 A 18.63 A 2.84 A apart
Current at max power 14.96 A 17.69 A 2.73 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1961x1134x30 mm 2384x1303x33 mm 1961x1134x30 mm vs 2384x1303x33 mm
Module area 2.224 m² 3.106 m² 0.883 m² apart
Weight 26.9 kg 38.0 kg -11.1 kg for CHSM54RN(DG)/F-BH-515
Weight per kWp 52.2 kg/kWp 52.4 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 15 yrs +10 yrs for CHSM54RN(DG)/F-BH-515
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 108 132 24 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#1,306 vs #1,017
CHSM66N(DG)/F-BH-725 leads by 289 places
Power density
#1,473 vs #936
CHSM66N(DG)/F-BH-725 leads by 537 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#5,704 vs #5,889
CHSM54RN(DG)/F-BH-515 leads by 185 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,194 vs #266
CHSM66N(DG)/F-BH-725 leads by 2,928 places
05

More useful comparisons

Open the full database
Same series, other bin
Astronergy CHSM54RN(DG)/F-BH-515 vs Astronergy CHSM54RN(DG)/F-BH-530
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM54RN(DG)/F-BH-515 vs Astronergy CHSM54RN(DG)/F-BH-525
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM54RN(DG)/F-BH-515 vs Astronergy CHSM54RN(DG)/F-BH-520
One difference: module efficiency
Same series, other bin
Astronergy CHSM54RN(DG)/F-BH-515 vs Astronergy CHSM54RN(DG)/F-BH-510
One difference: module efficiency
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-725 vs Astronergy CHSM66N(DG)/F-BH-735
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM66N(DG)/F-BH-725 vs Astronergy CHSM66N(DG)/F-BH-730
One difference: module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Astronergy CHSM54RN(DG)/F-BH-515 or Astronergy CHSM66N(DG)/F-BH-725?
According to our database: Astronergy CHSM66N(DG)/F-BH-725 has higher module efficiency (23.30% vs 23.20%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Astronergy CHSM54RN(DG)/F-BH-515 and Astronergy CHSM66N(DG)/F-BH-725?
Astronergy CHSM54RN(DG)/F-BH-515 has a module efficiency of 23.20%, while Astronergy CHSM66N(DG)/F-BH-725 is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Astronergy CHSM54RN(DG)/F-BH-515 use vs Astronergy CHSM66N(DG)/F-BH-725?
Astronergy CHSM54RN(DG)/F-BH-515 uses TOPCon cells; Astronergy CHSM66N(DG)/F-BH-725 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 CHSM54RN(DG)/F-BH-515 and Astronergy CHSM66N(DG)/F-BH-725?
Astronergy CHSM54RN(DG)/F-BH-515 has a 30 years power warranty; Astronergy CHSM66N(DG)/F-BH-725 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 CHSM54RN(DG)/F-BH-515 and Astronergy CHSM66N(DG)/F-BH-725 bifacial panels?
Both Astronergy CHSM54RN(DG)/F-BH-515 and Astronergy CHSM66N(DG)/F-BH-725 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.