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GK-4-78HGBD-780M vs AE CME-132 720 2 of 18 identical Swap Change panels

Gokin GK-4-78HGBD-780M vs AE Solar AE CME-132 720

Gokin GK-4-78HGBD-780M
Gokin
GK-4-78HGBD-780M
780 Wp 24.30 % Back Contact Bifacial
Open panel page Datasheet PDF
VS
AE Solar AE CME-132 720
AE CME-132 720
720 Wp 23.21 % TOPCon Incomplete
Open panel page Datasheet PDF
The verdict

GK-4-78HGBD-780M leads on the differences that matter

The largest is module efficiency: 1.09 pp more efficient. 2 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 16 differences
How alike are they
2 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

16 of 18 parameters
Parameter GK-4-78HGBD-780M AE CME-132 720 Difference
Module efficiency 24.30 % 23.21 % 1.09 pp more efficient
Rated power 780 Wp 720 Wp 60 W more power
Temperature coefficient -0.260 %/°C -0.290 %/°C 0.030 %/°C better in heat
Power density 242.8 Wp/m² 232.1 Wp/m² 10.8 Wp/m² higher
Weight 38.7 kg 31.5 kg 7.2 kg lighter
Product warranty 15 yrs 30 yrs 15 yrs longer
Weight per kWp 49.6 kg/kWp 43.8 kg/kWp 5.9 kg/kWp lighter
Open-circuit voltage 58.92 V 49.10 V 9.82 V apart
Module area 3.212 m² 3.103 m² 0.109 m² apart
Short-circuit current 16.78 A 18.43 A 1.65 A apart
Cell technology Back Contact TOPCon Back Contact vs TOPCon
Voltage at max power 48.97 V 41.30 V 7.67 V apart
Cell count 156 132 24 cells apart
Current at max power 15.93 A 17.43 A 1.50 A apart
Bifacial Yes No Yes vs No
Dimensions 2465x1303x33 mm 2383x1302x30 mm 2465x1303x33 mm vs 2383x1302x30 mm
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
GK-4-78HGBD-780M
26,171 kWh
AE CME-132 720
24,157 kWh
Lifetime gap
2,014 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario GK-4-78HGBD-780M AE CME-132 720
Standard test conditions 25 °C 100.0% of rated power 780 W 720 W
Cool, bright day 40 °C 95.7% of rated power 750 W 689 W
Typical summer roof 55 °C 91.3% of rated power 719 W 657 W
Hot roof 70 °C 87.0% of rated power 689 W 626 W
03

Full specification

Parameter GK-4-78HGBD-780M AE CME-132 720 Difference
Power and efficiency
Rated power 780 Wp 720 Wp +60 W for GK-4-78HGBD-780M
Module efficiency 24.30 % 23.21 % +1.09 pp for GK-4-78HGBD-780M
Power density 242.8 Wp/m² 232.1 Wp/m² +10.8 Wp/m² for GK-4-78HGBD-780M
Open-circuit voltage 58.92 V 49.10 V 9.82 V apart
Voltage at max power 48.97 V 41.30 V 7.67 V apart
Short-circuit current 16.78 A 18.43 A 1.65 A apart
Current at max power 15.93 A 17.43 A 1.50 A apart
Temperature
Temperature coefficient -0.260 %/°C -0.290 %/°C +0.030 %/°C for GK-4-78HGBD-780M
Mechanical
Dimensions 2465x1303x33 mm 2383x1302x30 mm 2465x1303x33 mm vs 2383x1302x30 mm
Module area 3.212 m² 3.103 m² 0.109 m² apart
Weight 38.7 kg 31.5 kg -7.2 kg for AE CME-132 720
Weight per kWp 49.6 kg/kWp 43.8 kg/kWp -5.9 kg/kWp for AE CME-132 720
Warranty and degradation
Product warranty 15 yrs 30 yrs +15 yrs for AE CME-132 720
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.35 %/yr - Not published by AE Solar
Technology
Cell technology Back Contact TOPCon Back Contact vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 156 132 24 cells apart
Bifacial Yes No Yes vs No
04

Against the whole database

14,005 panels
Efficiency
#131 vs #1,299
GK-4-78HGBD-780M leads by 1,168 places
Power density
#138 vs #1,339
GK-4-78HGBD-780M leads by 1,201 places
Heat behaviour
#511 vs #2,165
GK-4-78HGBD-780M leads by 1,654 places
Weight
#3,161 vs #336
AE CME-132 720 leads by 2,825 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#15 vs #19
GK-4-78HGBD-780M leads by 4 places
05

More useful comparisons

Open the full database
Same series, other bin
Gokin
Gokin GK-4-78HGBD-780M vs Gokin GK-4-78HGBD-775M
One difference: module efficiency
Same series, other bin
Gokin
Gokin GK-4-78HGBD-780M vs Gokin GK-4-78HGBD-770M
3 differences, the largest is module efficiency
Same series, other bin
Gokin
Gokin GK-4-78HGBD-780M vs Gokin GK-4-78HGBD-765M
3 differences, the largest is module efficiency
Same series, other bin
Gokin
Gokin GK-4-78HGBD-780M vs Gokin GK-4-78HGBD-760M
3 differences, the largest is module efficiency
Same series, other bin
AE Solar AE CME-132 720 vs AE Solar CME-132BDS-730
6 differences, the largest is weight
Same series, other bin
AE Solar AE CME-132 720 vs AE Solar CME-132BDS-730W
7 differences, the largest is weight
06

Written summary

07

Questions about this pairing

Which panel is better: Gokin GK-4-78HGBD-780M or AE Solar AE CME-132 720?
According to our database: Gokin GK-4-78HGBD-780M has higher module efficiency (24.30% vs 23.21%); Gokin GK-4-78HGBD-780M tolerates heat better (temp coeff -0.260%/°C vs -0.290%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Gokin GK-4-78HGBD-780M and AE Solar AE CME-132 720?
Gokin GK-4-78HGBD-780M has a module efficiency of 24.30%, while AE Solar AE CME-132 720 is 23.21%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Gokin GK-4-78HGBD-780M use vs AE Solar AE CME-132 720?
Gokin GK-4-78HGBD-780M uses Back Contact cells; AE Solar AE CME-132 720 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 Gokin GK-4-78HGBD-780M and AE Solar AE CME-132 720?
Gokin GK-4-78HGBD-780M has a 30 years power warranty; AE Solar AE CME-132 720 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 Gokin GK-4-78HGBD-780M and AE Solar AE CME-132 720 bifacial panels?
Gokin GK-4-78HGBD-780M is bifacial (captures light from both faces); AE Solar AE CME-132 720 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
Compare Gokin and AE Solar as manufacturers Portfolio, efficiency, cell technologies and warranty terms

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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.