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660M-132DG vs 715M-132DGN 10 of 19 identical Swap Change panels

Ulica Solar UL-660M-132DG vs Ulica Solar UL-715M-132DGN

Ulica Solar
UL-660M-132DG
660 Wp 21.25 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Ulica Solar
UL-715M-132DGN
715 Wp 23.02 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

715M-132DGN leads on the differences that matter

The largest is module efficiency: 1.77 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 660M-132DG 715M-132DGN Difference
Module efficiency 21.25 % 23.02 % 1.77 pp more efficient
Temperature coefficient -0.340 %/°C -0.290 %/°C 0.050 %/°C better in heat
Rated power 660 Wp 715 Wp 55 W more power
Power density 212.5 Wp/m² 230.2 Wp/m² 17.7 Wp/m² higher
Product warranty 12 yrs 15 yrs 3 yrs longer
Open-circuit voltage 45.70 V 48.93 V 3.23 V apart
Weight per kWp 56.5 kg/kWp 52.3 kg/kWp 4.2 kg/kWp lighter
Voltage at max power 38.20 V 40.99 V 2.79 V apart
Dimensions 2384x1303x35 mm 2384x1303x33 mm 2384x1303x35 mm vs 2384x1303x33 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
660M-132DG
22,144 kWh
715M-132DGN
23,990 kWh
Lifetime gap
1,846 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 660M-132DG 715M-132DGN
Standard test conditions 25 °C 100.0% of rated power 660 W 715 W
Cool, bright day 40 °C 94.9% of rated power 626 W 684 W
Typical summer roof 55 °C 89.8% of rated power 593 W 653 W
Hot roof 70 °C 84.7% of rated power 559 W 622 W
03

Full specification

Parameter 660M-132DG 715M-132DGN Difference
Power and efficiency
Rated power 660 Wp 715 Wp +55 W for 715M-132DGN
Module efficiency 21.25 % 23.02 % +1.77 pp for 715M-132DGN
Power density 212.5 Wp/m² 230.2 Wp/m² +17.7 Wp/m² for 715M-132DGN
Open-circuit voltage 45.70 V 48.93 V 3.23 V apart
Voltage at max power 38.20 V 40.99 V 2.79 V apart
Short-circuit current 18.44 A 18.42 A Effectively the same
Current at max power 17.28 A 17.44 A Effectively the same
Temperature
Temperature coefficient -0.340 %/°C -0.290 %/°C +0.050 %/°C for 715M-132DGN
Mechanical
Dimensions 2384x1303x35 mm 2384x1303x33 mm 2384x1303x35 mm vs 2384x1303x33 mm
Module area 3.106 m² 3.106 m² Same
Weight 37.3 kg 37.4 kg Effectively the same
Weight per kWp 56.5 kg/kWp 52.3 kg/kWp -4.2 kg/kWp for 715M-132DGN
Warranty and degradation
Product warranty 12 yrs 15 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
#8,904 vs #1,797
715M-132DGN leads by 7,107 places
Power density
#8,959 vs #2,018
715M-132DGN leads by 6,941 places
Heat behaviour
#8,778 vs #2,165
715M-132DGN leads by 6,613 places
Weight
#10,694 vs #5,769
715M-132DGN leads by 4,925 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,163 vs #443
715M-132DGN leads by 2,720 places
05

More useful comparisons

Open the full database
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Ulica Solar UL-660M-132DG vs Ulica Solar UL-665M-132DG
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Ulica Solar UL-715M-132DGN vs Ulica Solar UL-700M-132DGN
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06

Written summary

07

Questions about this pairing

Which panel is better: Ulica Solar UL-660M-132DG or Ulica Solar UL-715M-132DGN?
According to our database: Ulica Solar UL-715M-132DGN has higher module efficiency (23.02% vs 21.25%); 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-660M-132DG and Ulica Solar UL-715M-132DGN?
Ulica Solar UL-660M-132DG has a module efficiency of 21.25%, while Ulica Solar UL-715M-132DGN is 23.02%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Ulica Solar UL-660M-132DG use vs Ulica Solar UL-715M-132DGN?
Ulica Solar UL-660M-132DG uses TOPCon cells; Ulica Solar UL-715M-132DGN 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-660M-132DG and Ulica Solar UL-715M-132DGN?
Ulica Solar UL-660M-132DG has a 30 years power warranty; Ulica Solar UL-715M-132DGN 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-660M-132DG and Ulica Solar UL-715M-132DGN bifacial panels?
Both Ulica Solar UL-660M-132DG and Ulica Solar UL-715M-132DGN 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.