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715M-132DGN vs 665M-132HV 6 of 19 identical Swap Change panels

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

Ulica Solar
UL-715M-132DGN
715 Wp 23.02 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Ulica Solar
UL-665M-132HV
665 Wp 21.41 % TOPCon
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. 6 of 19 comparable parameters are identical.

See all 13 differences
How alike are they
6 of 19 comparable
parameters are identical
identical differs
01

What actually differs

13 of 19 parameters
Parameter 715M-132DGN 665M-132HV 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
Performance warranty 30 yrs 25 yrs 5 yrs longer
Annual degradation 0.40 %/yr 0.55 %/yr 0.15 %/yr slower
Weight 37.4 kg 33.3 kg 4.1 kg lighter
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 50.1 kg/kWp 2.2 kg/kWp lighter
Bifacial Yes No Yes vs No
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-132HV
21,552 kWh
Lifetime gap
2,438 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 715M-132DGN 665M-132HV
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-132HV 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 33.3 kg -4.1 kg for 665M-132HV
Weight per kWp 52.3 kg/kWp 50.1 kg/kWp -2.2 kg/kWp for 665M-132HV
Warranty and degradation
Product warranty 15 yrs 12 yrs +3 yrs for 715M-132DGN
Performance warranty 30 yrs 25 yrs +5 yrs for 715M-132DGN
Annual degradation 0.40 %/yr 0.55 %/yr -0.15 %/yr for 715M-132DGN
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes No Yes vs No
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 #3,587
665M-132HV leads by 2,182 places
Warranty
#21 vs #9,798
715M-132DGN leads by 9,777 places
Overall
#443 vs #3,744
715M-132DGN leads by 3,301 places
05

More useful comparisons

Open the full database
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Ulica Solar UL-665M-132HV vs Ulica Solar UL-655M-132HV
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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-132HV?
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-132HV?
Ulica Solar UL-715M-132DGN has a module efficiency of 23.02%, while Ulica Solar UL-665M-132HV 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-132HV?
Ulica Solar UL-715M-132DGN uses TOPCon cells; Ulica Solar UL-665M-132HV 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-132HV?
Ulica Solar UL-715M-132DGN has a 30 years power warranty; Ulica Solar UL-665M-132HV has a 25 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-132HV bifacial panels?
Ulica Solar UL-715M-132DGN is bifacial (captures light from both faces); Ulica Solar UL-665M-132HV is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

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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.