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665MH-132 vs 720MH-132 8 of 18 identical Swap Change panels

Phono Solar NS-665MH-132 vs Phono Solar NS-720MH-132

NS-665MH-132
665 Wp 21.40 % TOPCon Incomplete
Open panel page Datasheet PDF
VS
NS-720MH-132
720 Wp 23.17 % N-type Incomplete
Open panel page Datasheet PDF
The verdict

720MH-132 leads on the differences that matter

The largest is module efficiency: 1.77 pp more efficient. 8 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 10 differences
How alike are they
8 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

10 of 18 parameters
Parameter 665MH-132 720MH-132 Difference
Module efficiency 21.40 % 23.17 % 1.77 pp more efficient
Rated power 665 Wp 720 Wp 55 W more power
Power density 214.1 Wp/m² 231.8 Wp/m² 17.7 Wp/m² higher
Performance warranty 30 yrs 25 yrs 5 yrs longer
Weight 38.7 kg 34.0 kg 4.7 kg lighter
Weight per kWp 58.2 kg/kWp 47.2 kg/kWp 11.0 kg/kWp lighter
Open-circuit voltage 45.60 V 50.00 V 4.40 V apart
Cell technology TOPCon N-type TOPCon vs N-type
Voltage at max power 38.50 V 41.89 V 3.39 V apart
Short-circuit current 18.69 A 18.00 A 0.69 A apart
02

What it means on a roof

Thirty years of production
A 1.0% first-year loss then 0.40% a year, assumed for both panels, 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.
665MH-132
22,312 kWh
720MH-132
24,157 kWh
Lifetime gap
1,845 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 665MH-132 720MH-132
Standard test conditions 25 °C 100.0% of rated power 665 W 720 W
Cool, bright day 40 °C 95.7% of rated power 636 W 689 W
Typical summer roof 55 °C 91.3% of rated power 607 W 657 W
Hot roof 70 °C 87.0% of rated power 578 W 626 W
03

Full specification

Parameter 665MH-132 720MH-132 Difference
Power and efficiency
Rated power 665 Wp 720 Wp +55 W for 720MH-132
Module efficiency 21.40 % 23.17 % +1.77 pp for 720MH-132
Power density 214.1 Wp/m² 231.8 Wp/m² +17.7 Wp/m² for 720MH-132
Open-circuit voltage 45.60 V 50.00 V 4.40 V apart
Voltage at max power 38.50 V 41.89 V 3.39 V apart
Short-circuit current 18.69 A 18.00 A 0.69 A apart
Current at max power 17.28 A 17.19 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2384x1303x30 mm 2384x1303x30 mm Same
Module area 3.106 m² 3.106 m² Same
Weight 38.7 kg 34.0 kg -4.7 kg for 720MH-132
Weight per kWp 58.2 kg/kWp 47.2 kg/kWp -11.0 kg/kWp for 720MH-132
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 25 yrs +5 yrs for 665MH-132
Annual degradation - - Neither datasheet publishes this
Technology
Cell technology TOPCon N-type TOPCon vs N-type
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial No No Same
04

Against the whole database

14,129 panels
Efficiency
#8,388 vs #1,518
720MH-132 leads by 6,870 places
Power density
#8,315 vs #1,390
720MH-132 leads by 6,925 places
Heat behaviour
#2,220 vs #2,220
Tied - the same position in the database
Weight
#11,709 vs #1,588
720MH-132 leads by 10,121 places
Warranty
#21 vs #9,912
665MH-132 leads by 9,891 places
Overall
#2,299 vs #689
720MH-132 leads by 1,610 places
05

More useful comparisons

Open the full database
Same series, other bin
Phono Solar NS-665MH-132 vs Phono Solar NS-730MH-132
10 differences, the largest is module efficiency
Same series, other bin
Phono Solar NS-665MH-132 vs Phono Solar NS-710MH-132
10 differences, the largest is module efficiency
Same series, other bin
Phono Solar NS-665MH-132 vs Phono Solar NS-700MH-132
10 differences, the largest is module efficiency
Same series, other bin
Phono Solar NS-665MH-132 vs Phono Solar NS-690MH-132
10 differences, the largest is module efficiency
Same series, other bin
Phono Solar NS-665MH-132 vs Phono Solar NS-670MH-132
The same specification on paper
Same series, other bin
Phono Solar NS-665MH-132 vs Phono Solar NS-660MH-132
The same specification on paper
06

Written summary

07

Questions about this pairing

Which panel is better: Phono Solar NS-665MH-132 or Phono Solar NS-720MH-132?
According to our database: Phono Solar NS-720MH-132 has higher module efficiency (23.17% vs 21.40%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Phono Solar NS-665MH-132 and Phono Solar NS-720MH-132?
Phono Solar NS-665MH-132 has a module efficiency of 21.40%, while Phono Solar NS-720MH-132 is 23.17%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Phono Solar NS-665MH-132 use vs Phono Solar NS-720MH-132?
Phono Solar NS-665MH-132 uses TOPCon cells; Phono Solar NS-720MH-132 uses N-type. 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 Phono Solar NS-665MH-132 and Phono Solar NS-720MH-132?
Phono Solar NS-665MH-132 has a 30 years power warranty; Phono Solar NS-720MH-132 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.

Shop prices: See 4 Phono Solar offers

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.