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DH120ND-515W vs DH120NA-490 11 of 18 identical Swap Change panels

DAS Solar DAS-DH120ND-515W vs DAS Solar DAS-DH120NA-490

DAS Solar
DAS-DH120ND-515W
515 Wp 22.80 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
DAS Solar
DAS-DH120NA-490
490 Wp 22.70 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

DH120ND-515W leads on the differences that matter

The largest is rated power: 25 W more power. 11 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 7 differences
How alike are they
11 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

7 of 18 parameters
Parameter DH120ND-515W DH120NA-490 Difference
Rated power 515 Wp 490 Wp 25 W more power
Temperature coefficient -0.280 %/°C -0.300 %/°C 0.020 %/°C better in heat
Module area 2.261 m² 2.158 m² 0.103 m² apart
Weight 27.5 kg 26.0 kg 1.5 kg lighter
Short-circuit current 14.84 A 14.01 A 0.83 A apart
Dimensions 1994x1134x30 mm 1903x1134x30 mm 1994x1134x30 mm vs 1903x1134x30 mm
Current at max power 14.10 A 13.23 A 0.87 A apart
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
DH120ND-515W
17,279 kWh
DH120NA-490
16,440 kWh
Lifetime gap
839 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario DH120ND-515W DH120NA-490
Standard test conditions 25 °C 100.0% of rated power 515 W 490 W
Cool, bright day 40 °C 95.5% of rated power 493 W 468 W
Typical summer roof 55 °C 91.0% of rated power 472 W 446 W
Hot roof 70 °C 86.5% of rated power 450 W 424 W
03

Full specification

Parameter DH120ND-515W DH120NA-490 Difference
Power and efficiency
Rated power 515 Wp 490 Wp +25 W for DH120ND-515W
Module efficiency 22.80 % 22.70 % Effectively the same
Power density 227.8 Wp/m² 227.1 Wp/m² Effectively the same
Open-circuit voltage 43.71 V 43.39 V Effectively the same
Voltage at max power 36.53 V 37.04 V Effectively the same
Short-circuit current 14.84 A 14.01 A 0.83 A apart
Current at max power 14.10 A 13.23 A 0.87 A apart
Temperature
Temperature coefficient -0.280 %/°C -0.300 %/°C +0.020 %/°C for DH120ND-515W
Mechanical
Dimensions 1994x1134x30 mm 1903x1134x30 mm 1994x1134x30 mm vs 1903x1134x30 mm
Module area 2.261 m² 2.158 m² 0.103 m² apart
Weight 27.5 kg 26.0 kg -1.5 kg for DH120NA-490
Weight per kWp 53.4 kg/kWp 53.1 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 - 120 Not published by DAS Solar
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#2,714 vs #3,307
DH120ND-515W leads by 593 places
Power density
#2,873 vs #3,339
DH120ND-515W leads by 466 places
Heat behaviour
#1,309 vs #6,093
DH120ND-515W leads by 4,784 places
Weight
#7,319 vs #6,818
DH120NA-490 leads by 501 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#5,665 vs #6,727
DH120ND-515W leads by 1,062 places
05

More useful comparisons

Open the full database
Same series, other bin
DAS Solar
DAS Solar DAS-DH120ND-515W vs DAS Solar DAS-DH120ND-510W
One difference: module efficiency
Same series, other bin
DAS Solar
DAS Solar DAS-DH120ND-515W vs DAS Solar DAS-DH120ND-505W
3 differences, the largest is module efficiency
Same series, other bin
DAS Solar
DAS Solar DAS-DH120ND-515W vs DAS Solar DAS-DH120ND-500W
3 differences, the largest is module efficiency
Same series, other bin
DAS Solar
DAS Solar DAS-DH120ND-515W vs DAS Solar DAS-DH120ND-495W
4 differences, the largest is module efficiency
Same series, other bin
DAS Solar
DAS Solar DAS-DH120ND-515W vs DAS Solar DAS-DH120ND-490W
6 differences, the largest is module efficiency
Same series, other bin
DAS Solar
DAS Solar DAS-DH120ND-515W vs DAS Solar DAS-DH120NA-485
9 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: DAS Solar DAS-DH120ND-515W or DAS Solar DAS-DH120NA-490?
According to our database: DAS Solar DAS-DH120ND-515 W has higher module efficiency (22.80% vs 22.70%); DAS Solar DAS-DH120ND-515 W tolerates heat better (temp coeff -0.280%/°C vs -0.300%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of DAS Solar DAS-DH120ND-515W and DAS Solar DAS-DH120NA-490?
DAS Solar DAS-DH120ND-515 W has a module efficiency of 22.80%, while DAS Solar DAS-DH120NA-490 is 22.70%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does DAS Solar DAS-DH120ND-515W use vs DAS Solar DAS-DH120NA-490?
DAS Solar DAS-DH120ND-515 W uses TOPCon cells; DAS Solar DAS-DH120NA-490 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-DH120ND-515W and DAS Solar DAS-DH120NA-490?
DAS Solar DAS-DH120ND-515 W has a 30 years power warranty; DAS Solar DAS-DH120NA-490 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-DH120ND-515W and DAS Solar DAS-DH120NA-490 bifacial panels?
Both DAS Solar DAS-DH120ND-515 W and DAS Solar DAS-DH120NA-490 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.