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DHN-66Y18/DG-720 vs DAS-DH132NC-705 12 of 18 identical Swap Change panels

DAH Solar DHN-66Y18/DG-720 vs DAH Solar DAS-DH132NC-705

DAH Solar
DHN-66Y18/DG-720
720 Wp 23.18 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
DAH Solar
DAS-DH132NC-705
705 Wp 22.70 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

DHN-66Y18/DG-720 leads on the differences that matter

The largest is module efficiency: 0.48 pp more efficient. 12 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 6 differences
How alike are they
12 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

6 of 18 parameters
Parameter DHN-66Y18/DG-720 DAS-DH132NC-705 Difference
Module efficiency 23.18 % 22.70 % 0.48 pp more efficient
Power density 231.8 Wp/m² 227.0 Wp/m² 4.8 Wp/m² higher
Rated power 720 Wp 705 Wp 15 W more power
Weight per kWp 51.0 kg/kWp 54.3 kg/kWp 3.4 kg/kWp lighter
Temperature coefficient -0.290 %/°C -0.280 %/°C 0.010 %/°C better in heat
Weight 36.7 kg 38.3 kg 1.6 kg lighter
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
DHN-66Y18/DG-720
24,157 kWh
DAS-DH132NC-705
23,654 kWh
Lifetime gap
503 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario DHN-66Y18/DG-720 DAS-DH132NC-705
Standard test conditions 25 °C 100.0% of rated power 720 W 705 W
Cool, bright day 40 °C 95.7% of rated power 689 W 675 W
Typical summer roof 55 °C 91.3% of rated power 657 W 646 W
Hot roof 70 °C 87.0% of rated power 626 W 616 W
03

Full specification

Parameter DHN-66Y18/DG-720 DAS-DH132NC-705 Difference
Power and efficiency
Rated power 720 Wp 705 Wp +15 W for DHN-66Y18/DG-720
Module efficiency 23.18 % 22.70 % +0.48 pp for DHN-66Y18/DG-720
Power density 231.8 Wp/m² 227.0 Wp/m² +4.8 Wp/m² for DHN-66Y18/DG-720
Open-circuit voltage 48.40 V 48.72 V Effectively the same
Voltage at max power 40.80 V 40.62 V Effectively the same
Short-circuit current 18.73 A 18.38 A Effectively the same
Current at max power 17.65 A 17.36 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.280 %/°C +0.010 %/°C for DAS-DH132NC-705
Mechanical
Dimensions 2384x1303x33 mm 2384x1303x33 mm Same
Module area 3.106 m² 3.106 m² Same
Weight 36.7 kg 38.3 kg -1.6 kg for DHN-66Y18/DG-720
Weight per kWp 51.0 kg/kWp 54.3 kg/kWp -3.4 kg/kWp for DHN-66Y18/DG-720
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 - Not published by DAH Solar
Bifacial Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#1,468 vs #3,364
DHN-66Y18/DG-720 leads by 1,896 places
Power density
#1,390 vs #3,418
DHN-66Y18/DG-720 leads by 2,028 places
Heat behaviour
#2,220 vs #1,347
DAS-DH132NC-705 leads by 873 places
Weight
#4,356 vs #8,684
DHN-66Y18/DG-720 leads by 4,328 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#352 vs #759
DHN-66Y18/DG-720 leads by 407 places
05

More useful comparisons

Open the full database
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DAH Solar DHN-66Y18/DG-720 vs DAH Solar DHN-66Y18/DG-715
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DAH Solar DAS-DH132NC-705 vs DAH Solar DAS-DH132NC-715
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: DAH Solar DHN-66Y18/DG-720 or DAH Solar DAS-DH132NC-705?
According to our database: DAH Solar DHN-66Y18/DG-720 has higher module efficiency (23.18% vs 22.70%); DAH Solar DAS-DH132NC-705 tolerates heat better (temp coeff -0.280%/°C vs -0.290%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of DAH Solar DHN-66Y18/DG-720 and DAH Solar DAS-DH132NC-705?
DAH Solar DHN-66Y18/DG-720 has a module efficiency of 23.18%, while DAH Solar DAS-DH132NC-705 is 22.70%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does DAH Solar DHN-66Y18/DG-720 use vs DAH Solar DAS-DH132NC-705?
DAH Solar DHN-66Y18/DG-720 uses TOPCon cells; DAH Solar DAS-DH132NC-705 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 DAH Solar DHN-66Y18/DG-720 and DAH Solar DAS-DH132NC-705?
DAH Solar DHN-66Y18/DG-720 has a 30 years power warranty; DAH Solar DAS-DH132NC-705 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 DAH Solar DHN-66Y18/DG-720 and DAH Solar DAS-DH132NC-705 bifacial panels?
Both DAH Solar DHN-66Y18/DG-720 and DAH Solar DAS-DH132NC-705 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.