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445W vs 450W 18 of 19 identical Swap Change panels

Astronergy CHSM54RNs(DG)(BLH)/F-BH-445W vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W

CHSM54RNs(DG)(BLH)/F-BH-445W
445 Wp 22.30 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
CHSM54RNs(DG)(BLH)/F-BH-450W
450 Wp 22.50 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

450W leads on the differences that matter

The largest is module efficiency: 0.20 pp more efficient. 18 of 19 comparable parameters are identical.

See the one difference
How alike are they
18 of 19 comparable
parameters are identical
identical differs
01

What actually differs

1 of 19 parameters
Parameter 445W 450W Difference
Module efficiency 22.30 % 22.50 % 0.20 pp more efficient
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.
445W
14,931 kWh
450W
15,098 kWh
Lifetime gap
167 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 445W 450W
Standard test conditions 25 °C 100.0% of rated power 445 W 450 W
Cool, bright day 40 °C 95.7% of rated power 426 W 430 W
Typical summer roof 55 °C 91.3% of rated power 406 W 411 W
Hot roof 70 °C 87.0% of rated power 387 W 391 W
03

Full specification

Parameter 445W 450W Difference
Power and efficiency
Rated power 445 Wp 450 Wp Effectively the same
Module efficiency 22.30 % 22.50 % +0.20 pp for 450W
Power density 222.7 Wp/m² 225.2 Wp/m² Effectively the same
Open-circuit voltage 39.20 V 39.40 V Effectively the same
Voltage at max power 33.22 V 33.39 V Effectively the same
Short-circuit current 14.19 A 14.28 A Effectively the same
Current at max power 13.40 A 13.48 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1762x1134x30 mm 1762x1134x30 mm Same
Module area 1.998 m² 1.998 m² Same
Weight 21.5 kg 21.5 kg Same
Weight per kWp 48.3 kg/kWp 47.8 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 25 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 108 108 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#5,100 vs #4,222
450W leads by 878 places
Power density
#5,302 vs #4,225
450W leads by 1,077 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#2,192 vs #1,891
450W leads by 301 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,523 vs #6,062
450W leads by 461 places
05

More useful comparisons

Open the full database
Same series, other bin
Astronergy CHSM54RNs(DG)(BLH)/F-BH-445W 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-445W vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-455W
3 differences, the largest is module efficiency
Same series, other bin
Astronergy CHSM54RNs(DG)(BLH)/F-BH-445W vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-440W
One difference: module efficiency
Same manufacturer
Astronergy CHSM54RNs(DG)(BLH)/F-BH-445W vs Astronergy CHSM66N(DG)/F-BH-735
13 differences, the largest is module efficiency
Same manufacturer
Astronergy CHSM54RNs(DG)(BLH)/F-BH-445W vs Astronergy CHSM66N(DG)/F-BH-730
13 differences, the largest is module efficiency
Same manufacturer
Astronergy CHSM54RNs(DG)(BLH)/F-BH-445W vs Astronergy CHSM66N(DG)/F-BH-725
13 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Astronergy CHSM54RNs(DG)(BLH)/F-BH-445W or Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W?
According to our database: Astronergy CHSM54RNs(DG)(BLH)/F-BH-450 W has higher module efficiency (22.50% vs 22.30%). 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-445W and Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W?
Astronergy CHSM54RNs(DG)(BLH)/F-BH-445 W has a module efficiency of 22.30%, while Astronergy CHSM54RNs(DG)(BLH)/F-BH-450 W is 22.50%. 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-445W use vs Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W?
Astronergy CHSM54RNs(DG)(BLH)/F-BH-445 W uses TOPCon cells; Astronergy CHSM54RNs(DG)(BLH)/F-BH-450 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-445W and Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W?
Astronergy CHSM54RNs(DG)(BLH)/F-BH-445 W has a 30 years power warranty; Astronergy CHSM54RNs(DG)(BLH)/F-BH-450 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-445W and Astronergy CHSM54RNs(DG)(BLH)/F-BH-450W bifacial panels?
Both Astronergy CHSM54RNs(DG)(BLH)/F-BH-445 W and Astronergy CHSM54RNs(DG)(BLH)/F-BH-450 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.