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705W (series) vs 720W (series) 14 of 18 identical Swap Change panels

Gamko New Energy GKA210N132-705W (series) vs Gamko New Energy GKA210N132-720W (series)

Gamko New Energy GKA210N132-705W (series)
Gamko New Energy
GKA210N132-705W (series)
705 Wp 22.70 % TOPCon Bifacial Incomplete
Open panel page Datasheet PDF
VS
Gamko New Energy GKA210N132-720W (series)
Gamko New Energy
GKA210N132-720W (series)
720 Wp 23.18 % TOPCon Bifacial Incomplete
Open panel page Datasheet PDF
The verdict

720W (series) leads on the differences that matter

The largest is module efficiency: 0.48 pp more efficient. 14 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 4 differences
How alike are they
14 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

4 of 18 parameters
Parameter 705W (series) 720W (series) Difference
Module efficiency 22.70 % 23.18 % 0.48 pp more efficient
Power density 227.0 Wp/m² 231.8 Wp/m² 4.8 Wp/m² higher
Rated power 705 Wp 720 Wp 15 W more power
Open-circuit voltage 46.03 V 47.11 V 1.08 V apart
02

What it means on a roof

Thirty years of production
Declared first-year losses, with 0.40% a year afterwards assumed for both panels, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.340 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
705W (series)
23,400 kWh
720W (series)
23,898 kWh
Lifetime gap
498 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 705W (series) 720W (series)
Standard test conditions 25 °C 100.0% of rated power 705 W 720 W
Cool, bright day 40 °C 94.9% of rated power 669 W 683 W
Typical summer roof 55 °C 89.8% of rated power 633 W 647 W
Hot roof 70 °C 84.7% of rated power 597 W 610 W
03

Full specification

Parameter 705W (series) 720W (series) Difference
Power and efficiency
Rated power 705 Wp 720 Wp +15 W for 720W (series)
Module efficiency 22.70 % 23.18 % +0.48 pp for 720W (series)
Power density 227.0 Wp/m² 231.8 Wp/m² +4.8 Wp/m² for 720W (series)
Open-circuit voltage 46.03 V 47.11 V 1.08 V apart
Voltage at max power 38.36 V 38.91 V Effectively the same
Short-circuit current 19.30 A 19.43 A Effectively the same
Current at max power 18.38 A 18.50 A Effectively the same
Temperature
Temperature coefficient -0.340 %/°C -0.340 %/°C Same
Mechanical
Dimensions 2384x1303x30 mm 2384x1303x30 mm Same
Module area 3.106 m² 3.106 m² Same
Weight 32.0 kg 32.0 kg Same
Weight per kWp 45.4 kg/kWp 44.4 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 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 Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#3,364 vs #1,468
720W (series) leads by 1,896 places
Power density
#3,418 vs #1,390
720W (series) leads by 2,028 places
Heat behaviour
#8,846 vs #8,846
Tied - the same position in the database
Weight
#718 vs #447
720W (series) leads by 271 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#990 vs #510
720W (series) leads by 480 places
05

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06

Written summary

07

Questions about this pairing

Which panel is better: Gamko New Energy GKA210N132-705W (series) or Gamko New Energy GKA210N132-720W (series)?
According to our database: Gamko New Energy GKA210N132-720 W (series) has higher module efficiency (23.18% vs 22.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Gamko New Energy GKA210N132-705W (series) and Gamko New Energy GKA210N132-720W (series)?
Gamko New Energy GKA210N132-705 W (series) has a module efficiency of 22.70%, while Gamko New Energy GKA210N132-720 W (series) is 23.18%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Gamko New Energy GKA210N132-705W (series) use vs Gamko New Energy GKA210N132-720W (series)?
Gamko New Energy GKA210N132-705 W (series) uses TOPCon cells; Gamko New Energy GKA210N132-720 W (series) 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 Gamko New Energy GKA210N132-705W (series) and Gamko New Energy GKA210N132-720W (series)?
Gamko New Energy GKA210N132-705 W (series) has a 30 years power warranty; Gamko New Energy GKA210N132-720 W (series) 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 Gamko New Energy GKA210N132-705W (series) and Gamko New Energy GKA210N132-720W (series) bifacial panels?
Both Gamko New Energy GKA210N132-705 W (series) and Gamko New Energy GKA210N132-720 W (series) 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.

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.