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630W vs 625 17 of 18 identical Swap Change panels

DAH Solar DHN-78X16/DG-630W vs DAH Solar DHN-78X16/DG-625

DAH Solar
DHN-78X16/DG-630W
630 Wp 22.54 % TOPCon Bifacial Incomplete
Open panel page Datasheet PDF
VS
DAH Solar
DHN-78X16/DG-625
625 Wp 22.36 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

One difference, none of them an advantage

The largest is dimensions: 2465x1134x34 mm vs 2465x1134x30 mm. 17 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See the one difference
How alike are they
17 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

1 of 18 parameters
Parameter 630W 625 Difference
Dimensions 2465x1134x34 mm 2465x1134x30 mm 2465x1134x34 mm vs 2465x1134x30 mm
02

What it means on a roof

Thirty years of production
A 1.0% first-year loss then 0.40% a year, assumed for both panels, 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.
630W
21,138 kWh
625
20,970 kWh
Lifetime gap
168 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 630W 625
Standard test conditions 25 °C 100.0% of rated power 630 W 625 W
Cool, bright day 40 °C 95.7% of rated power 603 W 598 W
Typical summer roof 55 °C 91.3% of rated power 575 W 571 W
Hot roof 70 °C 87.0% of rated power 548 W 543 W
03

Full specification

Parameter 630W 625 Difference
Power and efficiency
Rated power 630 Wp 625 Wp Effectively the same
Module efficiency 22.54 % 22.36 % Effectively the same
Power density 225.4 Wp/m² 223.6 Wp/m² Effectively the same
Open-circuit voltage 56.00 V 55.80 V Effectively the same
Voltage at max power 47.20 V 47.00 V Effectively the same
Short-circuit current 14.20 A 14.14 A Effectively the same
Current at max power 13.35 A 13.30 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2465x1134x34 mm 2465x1134x30 mm 2465x1134x34 mm vs 2465x1134x30 mm
Module area 2.795 m² 2.795 m² Same
Weight 34.2 kg 34.2 kg Same
Weight per kWp 54.3 kg/kWp 54.7 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 Not published by DAH Solar
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 156 156 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#3,920 vs #5,007
630W leads by 1,087 places
Power density
#3,907 vs #4,955
630W leads by 1,048 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#8,524 vs #9,127
630W leads by 603 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,179 vs #2,522
630W leads by 343 places
05

More useful comparisons

Open the full database
Same series, other bin
DAH Solar
DAH Solar DHN-78X16/DG-630W vs DAH Solar DHN-78X16/DG-640W
3 differences, the largest is module efficiency
Same series, other bin
DAH Solar
DAH Solar DHN-78X16/DG-630W vs DAH Solar DHN-78X16/DG-635W
The same specification on paper
Same series, other bin
DAH Solar
DAH Solar DHN-78X16/DG-630W vs DAH Solar DHN-78X16/DG-625W
The same specification on paper
Same series, other bin
DAH Solar
DAH Solar DHN-78X16/DG-630W vs DAH Solar DHN-78X16/DG-620W
3 differences, the largest is module efficiency
Same series, other bin
DAH Solar
DAH Solar DHN-78X16/DG-625 vs DAH Solar DHN-78X16/DG-640
3 differences, the largest is module efficiency
Same series, other bin
DAH Solar
DAH Solar DHN-78X16/DG-625 vs DAH Solar DHN-78X16/DG-635
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: DAH Solar DHN-78X16/DG-630W or DAH Solar DHN-78X16/DG-625?
According to our database: DAH Solar DHN-78X16/DG-630 W has higher module efficiency (22.54% vs 22.36%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of DAH Solar DHN-78X16/DG-630W and DAH Solar DHN-78X16/DG-625?
DAH Solar DHN-78X16/DG-630 W has a module efficiency of 22.54%, while DAH Solar DHN-78X16/DG-625 is 22.36%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does DAH Solar DHN-78X16/DG-630W use vs DAH Solar DHN-78X16/DG-625?
DAH Solar DHN-78X16/DG-630 W uses TOPCon cells; DAH Solar DHN-78X16/DG-625 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-78X16/DG-630W and DAH Solar DHN-78X16/DG-625?
DAH Solar DHN-78X16/DG-630 W has a 30 years power warranty; DAH Solar DHN-78X16/DG-625 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-78X16/DG-630W and DAH Solar DHN-78X16/DG-625 bifacial panels?
Both DAH Solar DHN-78X16/DG-630 W and DAH Solar DHN-78X16/DG-625 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.