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670MH-132 vs 660MH-132 15 of 18 identical Swap Change panels

Phono Solar NS-670MH-132 vs Phono Solar NS-660MH-132

NS-670MH-132
670 Wp 21.56 % TOPCon Incomplete
Open panel page Datasheet PDF
VS
NS-660MH-132
660 Wp 21.24 % TOPCon Incomplete
Open panel page Datasheet PDF
The verdict

670MH-132 leads on the differences that matter

The largest is module efficiency: 0.32 pp more efficient. 15 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 3 differences
How alike are they
15 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

3 of 18 parameters
Parameter 670MH-132 660MH-132 Difference
Module efficiency 21.56 % 21.24 % 0.32 pp more efficient
Power density 215.7 Wp/m² 212.5 Wp/m² 3.2 Wp/m² higher
Rated power 670 Wp 660 Wp 10 W more power
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.
670MH-132
22,480 kWh
660MH-132
22,144 kWh
Lifetime gap
336 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 670MH-132 660MH-132
Standard test conditions 25 °C 100.0% of rated power 670 W 660 W
Cool, bright day 40 °C 95.7% of rated power 641 W 631 W
Typical summer roof 55 °C 91.3% of rated power 612 W 603 W
Hot roof 70 °C 87.0% of rated power 583 W 574 W
03

Full specification

Parameter 670MH-132 660MH-132 Difference
Power and efficiency
Rated power 670 Wp 660 Wp +10 W for 670MH-132
Module efficiency 21.56 % 21.24 % +0.32 pp for 670MH-132
Power density 215.7 Wp/m² 212.5 Wp/m² +3.2 Wp/m² for 670MH-132
Open-circuit voltage 45.80 V 45.40 V Effectively the same
Voltage at max power 38.70 V 38.30 V Effectively the same
Short-circuit current 18.76 A 18.63 A Effectively the same
Current at max power 17.32 A 17.24 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 38.7 kg Same
Weight per kWp 57.8 kg/kWp 58.6 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation - - Neither datasheet publishes this
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial No No Same
04

Against the whole database

14,129 panels
Efficiency
#7,838 vs #9,103
670MH-132 leads by 1,265 places
Power density
#7,708 vs #9,028
670MH-132 leads by 1,320 places
Heat behaviour
#2,220 vs #2,220
Tied - the same position in the database
Weight
#11,486 vs #11,906
670MH-132 leads by 420 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,033 vs #2,617
670MH-132 leads by 584 places
05

More useful comparisons

Open the full database
Same series, other bin
Phono Solar NS-670MH-132 vs Phono Solar NS-730MH-132
10 differences, the largest is module efficiency
Same series, other bin
Phono Solar NS-670MH-132 vs Phono Solar NS-720MH-132
10 differences, the largest is module efficiency
Same series, other bin
Phono Solar NS-670MH-132 vs Phono Solar NS-710MH-132
10 differences, the largest is module efficiency
Same series, other bin
Phono Solar NS-670MH-132 vs Phono Solar NS-700MH-132
10 differences, the largest is module efficiency
Same series, other bin
Phono Solar NS-670MH-132 vs Phono Solar NS-690MH-132
10 differences, the largest is module efficiency
Same series, other bin
Phono Solar NS-670MH-132 vs Phono Solar NS-665MH-132
The same specification on paper
06

Written summary

07

Questions about this pairing

Which panel is better: Phono Solar NS-670MH-132 or Phono Solar NS-660MH-132?
According to our database: Phono Solar NS-670MH-132 has higher module efficiency (21.56% vs 21.24%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Phono Solar NS-670MH-132 and Phono Solar NS-660MH-132?
Phono Solar NS-670MH-132 has a module efficiency of 21.56%, while Phono Solar NS-660MH-132 is 21.24%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Phono Solar NS-670MH-132 use vs Phono Solar NS-660MH-132?
Phono Solar NS-670MH-132 uses TOPCon cells; Phono Solar NS-660MH-132 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 Phono Solar NS-670MH-132 and Phono Solar NS-660MH-132?
Phono Solar NS-670MH-132 has a 30 years power warranty; Phono Solar NS-660MH-132 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.

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.