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650W vs 630W 15 of 18 identical Swap Change panels

DAS Solar DAS-DH156NA-650W vs DAS Solar DAS-DH156NA-630W

DAS Solar DAS-DH156NA-650W
DAS Solar
DAS-DH156NA-650W
650 Wp 23.30 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
DAS Solar DAS-DH156NA-630W
DAS Solar
DAS-DH156NA-630W
630 Wp 22.50 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

650W leads on the differences that matter

The largest is module efficiency: 0.80 pp more efficient. 15 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 3 differences
How alike are they
15 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

3 of 18 parameters
Parameter 650W 630W Difference
Module efficiency 23.30 % 22.50 % 0.80 pp more efficient
Power density 232.5 Wp/m² 225.4 Wp/m² 7.2 Wp/m² higher
Rated power 650 Wp 630 Wp 20 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 (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
650W
21,809 kWh
630W
21,138 kWh
Lifetime gap
671 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 650W 630W
Standard test conditions 25 °C 100.0% of rated power 650 W 630 W
Cool, bright day 40 °C 95.5% of rated power 621 W 602 W
Typical summer roof 55 °C 91.0% of rated power 592 W 573 W
Hot roof 70 °C 86.5% of rated power 562 W 545 W
03

Full specification

Parameter 650W 630W Difference
Power and efficiency
Rated power 650 Wp 630 Wp +20 W for 650W
Module efficiency 23.30 % 22.50 % +0.80 pp for 650W
Power density 232.5 Wp/m² 225.4 Wp/m² +7.2 Wp/m² for 650W
Open-circuit voltage 56.55 V 55.88 V Effectively the same
Voltage at max power 46.97 V 46.26 V Effectively the same
Short-circuit current 14.59 A 14.35 A Effectively the same
Current at max power 13.84 A 13.62 A Effectively the same
Temperature
Temperature coefficient -0.300 %/°C -0.300 %/°C Same
Mechanical
Dimensions 2465x1134x30 mm 2465x1134x30 mm Same
Module area 2.795 m² 2.795 m² Same
Weight 34.3 kg 34.3 kg Same
Weight per kWp 52.8 kg/kWp 54.4 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 - - Neither datasheet publishes this
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#1,017 vs #4,222
650W leads by 3,205 places
Power density
#1,222 vs #3,907
650W leads by 2,685 places
Heat behaviour
#6,093 vs #6,093
Tied - the same position in the database
Weight
#6,449 vs #8,755
650W leads by 2,306 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#1,318 vs #2,208
650W leads by 890 places
05

More useful comparisons

Open the full database
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DAS Solar DAS-DH156NA-650W vs DAS Solar DAS-DH156NA-645W
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DAS Solar DAS-DH156NA-650W vs DAS Solar DAS-DH156NA-640W
3 differences, the largest is module efficiency
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DAS Solar DAS-DH156NA-650W vs DAS Solar DAS-DH156NA-635W
3 differences, the largest is module efficiency
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DAS Solar
DAS Solar DAS-DH156NA-650W vs DAS Solar DAS-DH156NA-625W
4 differences, the largest is module efficiency
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DAS Solar DAS-DH156NA-650W vs DAS Solar DAS-DH132NC-715
10 differences, the largest is rated power
Same manufacturer
DAS Solar
DAS Solar DAS-DH156NA-650W vs DAS Solar DAS-DH132NC-710
11 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: DAS Solar DAS-DH156NA-650W or DAS Solar DAS-DH156NA-630W?
According to our database: DAS Solar DAS-DH156NA-650 W has higher module efficiency (23.30% vs 22.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of DAS Solar DAS-DH156NA-650W and DAS Solar DAS-DH156NA-630W?
DAS Solar DAS-DH156NA-650 W has a module efficiency of 23.30%, while DAS Solar DAS-DH156NA-630 W is 22.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does DAS Solar DAS-DH156NA-650W use vs DAS Solar DAS-DH156NA-630W?
DAS Solar DAS-DH156NA-650 W uses TOPCon cells; DAS Solar DAS-DH156NA-630 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 DAS Solar DAS-DH156NA-650W and DAS Solar DAS-DH156NA-630W?
DAS Solar DAS-DH156NA-650 W has a 30 years power warranty; DAS Solar DAS-DH156NA-630 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 DAS Solar DAS-DH156NA-650W and DAS Solar DAS-DH156NA-630W bifacial panels?
Both DAS Solar DAS-DH156NA-650 W and DAS Solar DAS-DH156NA-630 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.