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505M-120BDGN vs 490M-120BDGN 16 of 19 identical Swap Change panels

Ulica Solar UL-505M-120BDGN vs Ulica Solar UL-490M-120BDGN

Ulica Solar
UL-505M-120BDGN
505 Wp 22.81 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Ulica Solar
UL-490M-120BDGN
490 Wp 22.14 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

505M-120BDGN leads on the differences that matter

The largest is module efficiency: 0.67 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter 505M-120BDGN 490M-120BDGN Difference
Module efficiency 22.81 % 22.14 % 0.67 pp more efficient
Power density 228.1 Wp/m² 221.4 Wp/m² 6.8 Wp/m² higher
Rated power 505 Wp 490 Wp 15 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 (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
505M-120BDGN
16,944 kWh
490M-120BDGN
16,440 kWh
Lifetime gap
504 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 505M-120BDGN 490M-120BDGN
Standard test conditions 25 °C 100.0% of rated power 505 W 490 W
Cool, bright day 40 °C 95.7% of rated power 483 W 469 W
Typical summer roof 55 °C 91.3% of rated power 461 W 447 W
Hot roof 70 °C 87.0% of rated power 439 W 426 W
03

Full specification

Parameter 505M-120BDGN 490M-120BDGN Difference
Power and efficiency
Rated power 505 Wp 490 Wp +15 W for 505M-120BDGN
Module efficiency 22.81 % 22.14 % +0.67 pp for 505M-120BDGN
Power density 228.1 Wp/m² 221.4 Wp/m² +6.8 Wp/m² for 505M-120BDGN
Open-circuit voltage 43.94 V 43.35 V Effectively the same
Voltage at max power 37.18 V 36.68 V Effectively the same
Short-circuit current 14.54 A 14.35 A Effectively the same
Current at max power 13.58 A 13.36 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1952x1134x30 mm 1952x1134x30 mm Same
Module area 2.214 m² 2.214 m² Same
Weight 26.5 kg 26.5 kg Same
Weight per kWp 52.5 kg/kWp 54.1 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 120 120 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#2,711 vs #5,984
505M-120BDGN leads by 3,273 places
Power density
#2,755 vs #5,956
505M-120BDGN leads by 3,201 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#6,016 vs #8,300
505M-120BDGN leads by 2,284 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,015 vs #7,399
505M-120BDGN leads by 1,384 places
05

More useful comparisons

Open the full database
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Ulica Solar UL-505M-120BDGN vs Ulica Solar UL-500M-120BDGN
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Ulica Solar UL-505M-120BDGN vs Ulica Solar UL-495M-120BDGN
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Ulica Solar UL-505M-120BDGN vs Ulica Solar UL-715M-132DGN
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Ulica Solar UL-505M-120BDGN vs Ulica Solar UL-710M-132DGN
9 differences, the largest is rated power
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Ulica Solar UL-505M-120BDGN vs Ulica Solar UL-705M-132DGN
9 differences, the largest is rated power
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Ulica Solar UL-505M-120BDGN vs Ulica Solar UL-700M-132DGN
10 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Ulica Solar UL-505M-120BDGN or Ulica Solar UL-490M-120BDGN?
According to our database: Ulica Solar UL-505M-120BDGN has higher module efficiency (22.81% vs 22.14%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Ulica Solar UL-505M-120BDGN and Ulica Solar UL-490M-120BDGN?
Ulica Solar UL-505M-120BDGN has a module efficiency of 22.81%, while Ulica Solar UL-490M-120BDGN is 22.14%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Ulica Solar UL-505M-120BDGN use vs Ulica Solar UL-490M-120BDGN?
Ulica Solar UL-505M-120BDGN uses TOPCon cells; Ulica Solar UL-490M-120BDGN 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 Ulica Solar UL-505M-120BDGN and Ulica Solar UL-490M-120BDGN?
Ulica Solar UL-505M-120BDGN has a 30 years power warranty; Ulica Solar UL-490M-120BDGN 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 Ulica Solar UL-505M-120BDGN and Ulica Solar UL-490M-120BDGN bifacial panels?
Both Ulica Solar UL-505M-120BDGN and Ulica Solar UL-490M-120BDGN 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.