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715M-132DGN vs 665M-132DG 10 of 19 identical Swap Change panels

Ulica Solar UL-715M-132DGN vs Ulica Solar UL-665M-132DG

Ulica Solar
UL-715M-132DGN
715 Wp 23.02 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Ulica Solar
UL-665M-132DG
665 Wp 21.41 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

715M-132DGN leads on the differences that matter

The largest is module efficiency: 1.61 pp more efficient. 10 of 19 comparable parameters are identical.

See all 9 differences
How alike are they
10 of 19 comparable
parameters are identical
identical differs
01

What actually differs

9 of 19 parameters
Parameter 715M-132DGN 665M-132DG Difference
Module efficiency 23.02 % 21.41 % 1.61 pp more efficient
Temperature coefficient -0.290 %/°C -0.340 %/°C 0.050 %/°C better in heat
Rated power 715 Wp 665 Wp 50 W more power
Power density 230.2 Wp/m² 214.1 Wp/m² 16.1 Wp/m² higher
Product warranty 15 yrs 12 yrs 3 yrs longer
Open-circuit voltage 48.93 V 45.80 V 3.13 V apart
Weight per kWp 52.3 kg/kWp 56.1 kg/kWp 3.8 kg/kWp lighter
Voltage at max power 40.99 V 38.30 V 2.69 V apart
Dimensions 2384x1303x33 mm 2384x1303x35 mm 2384x1303x33 mm vs 2384x1303x35 mm
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
715M-132DGN
23,990 kWh
665M-132DG
22,312 kWh
Lifetime gap
1,678 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 715M-132DGN 665M-132DG
Standard test conditions 25 °C 100.0% of rated power 715 W 665 W
Cool, bright day 40 °C 94.9% of rated power 684 W 631 W
Typical summer roof 55 °C 89.8% of rated power 653 W 597 W
Hot roof 70 °C 84.7% of rated power 622 W 563 W
03

Full specification

Parameter 715M-132DGN 665M-132DG Difference
Power and efficiency
Rated power 715 Wp 665 Wp +50 W for 715M-132DGN
Module efficiency 23.02 % 21.41 % +1.61 pp for 715M-132DGN
Power density 230.2 Wp/m² 214.1 Wp/m² +16.1 Wp/m² for 715M-132DGN
Open-circuit voltage 48.93 V 45.80 V 3.13 V apart
Voltage at max power 40.99 V 38.30 V 2.69 V apart
Short-circuit current 18.42 A 18.53 A Effectively the same
Current at max power 17.44 A 17.36 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.340 %/°C +0.050 %/°C for 715M-132DGN
Mechanical
Dimensions 2384x1303x33 mm 2384x1303x35 mm 2384x1303x33 mm vs 2384x1303x35 mm
Module area 3.106 m² 3.106 m² Same
Weight 37.4 kg 37.3 kg Effectively the same
Weight per kWp 52.3 kg/kWp 56.1 kg/kWp -3.8 kg/kWp for 715M-132DGN
Warranty and degradation
Product warranty 15 yrs 12 yrs +3 yrs for 715M-132DGN
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 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#1,797 vs #8,280
715M-132DGN leads by 6,483 places
Power density
#2,018 vs #8,250
715M-132DGN leads by 6,232 places
Heat behaviour
#2,165 vs #8,778
715M-132DGN leads by 6,613 places
Weight
#5,769 vs #10,380
715M-132DGN leads by 4,611 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#443 vs #2,787
715M-132DGN leads by 2,344 places
05

More useful comparisons

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06

Written summary

07

Questions about this pairing

Which panel is better: Ulica Solar UL-715M-132DGN or Ulica Solar UL-665M-132DG?
According to our database: Ulica Solar UL-715M-132DGN has higher module efficiency (23.02% vs 21.41%); Ulica Solar UL-715M-132DGN tolerates heat better (temp coeff -0.290%/°C vs -0.340%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Ulica Solar UL-715M-132DGN and Ulica Solar UL-665M-132DG?
Ulica Solar UL-715M-132DGN has a module efficiency of 23.02%, while Ulica Solar UL-665M-132DG is 21.41%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Ulica Solar UL-715M-132DGN use vs Ulica Solar UL-665M-132DG?
Ulica Solar UL-715M-132DGN uses TOPCon cells; Ulica Solar UL-665M-132DG 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-715M-132DGN and Ulica Solar UL-665M-132DG?
Ulica Solar UL-715M-132DGN has a 30 years power warranty; Ulica Solar UL-665M-132DG 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-715M-132DGN and Ulica Solar UL-665M-132DG bifacial panels?
Both Ulica Solar UL-715M-132DGN and Ulica Solar UL-665M-132DG 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.