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DAS-DH132NC-705 vs DHN-66Y18/DG-725 12 of 18 identical Swap Change panels

DAH Solar DAS-DH132NC-705 vs DAH Solar DHN-66Y18/DG-725

DAH Solar
DAS-DH132NC-705
705 Wp 22.70 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
DAH Solar
DHN-66Y18/DG-725
725 Wp 23.34 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

DHN-66Y18/DG-725 leads on the differences that matter

The largest is module efficiency: 0.64 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 DAS-DH132NC-705 DHN-66Y18/DG-725 Difference
Module efficiency 22.70 % 23.34 % 0.64 pp more efficient
Power density 227.0 Wp/m² 233.4 Wp/m² 6.4 Wp/m² higher
Rated power 705 Wp 725 Wp 20 W more power
Weight per kWp 54.3 kg/kWp 50.6 kg/kWp 3.7 kg/kWp lighter
Temperature coefficient -0.280 %/°C -0.290 %/°C 0.010 %/°C better in heat
Weight 38.3 kg 36.7 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
DAS-DH132NC-705
23,654 kWh
DHN-66Y18/DG-725
24,325 kWh
Lifetime gap
671 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario DAS-DH132NC-705 DHN-66Y18/DG-725
Standard test conditions 25 °C 100.0% of rated power 705 W 725 W
Cool, bright day 40 °C 95.7% of rated power 675 W 693 W
Typical summer roof 55 °C 91.3% of rated power 646 W 662 W
Hot roof 70 °C 87.0% of rated power 616 W 630 W
03

Full specification

Parameter DAS-DH132NC-705 DHN-66Y18/DG-725 Difference
Power and efficiency
Rated power 705 Wp 725 Wp +20 W for DHN-66Y18/DG-725
Module efficiency 22.70 % 23.34 % +0.64 pp for DHN-66Y18/DG-725
Power density 227.0 Wp/m² 233.4 Wp/m² +6.4 Wp/m² for DHN-66Y18/DG-725
Open-circuit voltage 48.72 V 48.60 V Effectively the same
Voltage at max power 40.62 V 41.00 V Effectively the same
Short-circuit current 18.38 A 18.79 A Effectively the same
Current at max power 17.36 A 17.68 A Effectively the same
Temperature
Temperature coefficient -0.280 %/°C -0.290 %/°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 38.3 kg 36.7 kg -1.6 kg for DHN-66Y18/DG-725
Weight per kWp 54.3 kg/kWp 50.6 kg/kWp -3.7 kg/kWp for DHN-66Y18/DG-725
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
#3,364 vs #981
DHN-66Y18/DG-725 leads by 2,383 places
Power density
#3,418 vs #974
DHN-66Y18/DG-725 leads by 2,444 places
Heat behaviour
#1,347 vs #2,220
DAS-DH132NC-705 leads by 873 places
Weight
#8,684 vs #4,089
DHN-66Y18/DG-725 leads by 4,595 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#759 vs #252
DHN-66Y18/DG-725 leads by 507 places
05

More useful comparisons

Open the full database
Same series, other bin
DAH Solar
DAH Solar DAS-DH132NC-705 vs DAH Solar DAS-DH132NC-715
3 differences, the largest is module efficiency
Same series, other bin
DAH Solar
DAH Solar DAS-DH132NC-705 vs DAH Solar DAS-DH132NC-710
One difference: module efficiency
Same series, other bin
DAH Solar
DAH Solar DAS-DH132NC-705 vs DAH Solar DAS-DH132NC-700
One difference: module efficiency
Same series, other bin
DAH Solar
DAH Solar DAS-DH132NC-705 vs DAH Solar DAS-DH132NC-695
3 differences, the largest is module efficiency
Same series, other bin
DAH Solar
DAH Solar DHN-66Y18/DG-725 vs DAH Solar DHN-66Y18/DG-720
The same specification on paper
Same series, other bin
DAH Solar
DAH Solar DHN-66Y18/DG-725 vs DAH Solar DHN-66Y18/DG-715
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: DAH Solar DAS-DH132NC-705 or DAH Solar DHN-66Y18/DG-725?
According to our database: DAH Solar DHN-66Y18/DG-725 has higher module efficiency (23.34% 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 DAS-DH132NC-705 and DAH Solar DHN-66Y18/DG-725?
DAH Solar DAS-DH132NC-705 has a module efficiency of 22.70%, while DAH Solar DHN-66Y18/DG-725 is 23.34%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does DAH Solar DAS-DH132NC-705 use vs DAH Solar DHN-66Y18/DG-725?
DAH Solar DAS-DH132NC-705 uses TOPCon cells; DAH Solar DHN-66Y18/DG-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 DAH Solar DAS-DH132NC-705 and DAH Solar DHN-66Y18/DG-725?
DAH Solar DAS-DH132NC-705 has a 30 years power warranty; DAH Solar DHN-66Y18/DG-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 DAH Solar DAS-DH132NC-705 and DAH Solar DHN-66Y18/DG-725 bifacial panels?
Both DAH Solar DAS-DH132NC-705 and DAH Solar DHN-66Y18/DG-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.