Gokin GK-4-78HGBD-780M vs AE Solar CME-132BDS-725
VS
The verdict
GK-4-78HGBD-780M leads on the differences that matter
The largest is module efficiency: 0.93 pp more efficient. 4 of 19 comparable parameters are identical.
See all 15 differencesHow alike are they
4
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
15 of 19 parameters
What actually differs
Parameter
GK-4-78HGBD-780M
CME-132BDS-725
Difference
Module efficiency
24.30 %
23.37 %
0.93 pp more efficient
Rated power
780 Wp
725 Wp
55 W more power
Temperature coefficient
-0.260 %/°C
-0.290 %/°C
0.030 %/°C better in heat
Power density
242.8 Wp/m²
233.7 Wp/m²
9.2 Wp/m² higher
Product warranty
15 yrs
30 yrs
15 yrs longer
Open-circuit voltage
58.92 V
49.30 V
9.62 V apart
Module area
3.212 m²
3.103 m²
0.109 m² apart
Short-circuit current
16.78 A
18.46 A
1.68 A apart
Weight
38.7 kg
37.0 kg
1.7 kg lighter
Cell technology
Back Contact
TOPCon
Back Contact vs TOPCon
Annual degradation
0.35 %/yr
0.40 %/yr
0.05 %/yr slower
Voltage at max power
48.97 V
41.50 V
7.47 V apart
Cell count
156
132
24 cells apart
Current at max power
15.93 A
17.47 A
1.54 A apart
Dimensions
2465x1303x33 mm
2383x1302x30 mm
2465x1303x33 mm vs 2383x1302x30 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
GK-4-78HGBD-780M
26,374 kWh
CME-132BDS-725
24,325 kWh
Lifetime gap
2,049 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
GK-4-78HGBD-780M
CME-132BDS-725
Standard test conditions
25 °C
100.0% of rated power
780 W
725 W
Cool, bright day
40 °C
95.7% of rated power
750 W
693 W
Typical summer roof
55 °C
91.3% of rated power
719 W
662 W
Hot roof
70 °C
87.0% of rated power
689 W
630 W
03
Full specification
Parameter
GK-4-78HGBD-780M
CME-132BDS-725
Difference
Power and efficiency
Rated power
780 Wp
725 Wp
+55 W for GK-4-78HGBD-780M
Module efficiency
24.30 %
23.37 %
+0.93 pp for GK-4-78HGBD-780M
Power density
242.8 Wp/m²
233.7 Wp/m²
+9.2 Wp/m² for GK-4-78HGBD-780M
Open-circuit voltage
58.92 V
49.30 V
9.62 V apart
Voltage at max power
48.97 V
41.50 V
7.47 V apart
Short-circuit current
16.78 A
18.46 A
1.68 A apart
Current at max power
15.93 A
17.47 A
1.54 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
37.0 kg
-1.7 kg for CME-132BDS-725
Weight per kWp
49.6 kg/kWp
51.0 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
15 yrs
30 yrs
+15 yrs for CME-132BDS-725
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.35 %/yr
0.40 %/yr
-0.05 %/yr for GK-4-78HGBD-780M
Technology
Cell technology
Back Contact
TOPCon
Back Contact vs TOPCon
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
156
132
24 cells apart
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#131
vs
#930
GK-4-78HGBD-780M leads by 799 places
Power density
#138
vs
#923
GK-4-78HGBD-780M leads by 785 places
Heat behaviour
#511
vs
#2,165
GK-4-78HGBD-780M leads by 1,654 places
Weight
#3,161
vs
#4,382
GK-4-78HGBD-780M leads by 1,221 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#15
vs
#11
CME-132BDS-725 leads by 4 places
05
Open the full database
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AE Solar CME-132BDS-725 vs AE Solar CME-132BDS-730
The same specification on paper
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AE Solar CME-132BDS-725 vs AE Solar CME-132BDS-730W
One difference: product warranty
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Gokin GK-4-78HGBD-780M or AE Solar CME-132BDS-725?
According to our database: Gokin GK-4-78HGBD-780M has higher module efficiency (24.30% vs 23.37%); 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 CME-132BDS-725?
Gokin GK-4-78HGBD-780M has a module efficiency of 24.30%, while AE Solar CME-132BDS-725 is 23.37%. 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 CME-132BDS-725?
Gokin GK-4-78HGBD-780M uses Back Contact cells; AE Solar CME-132BDS-725 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 CME-132BDS-725?
Gokin GK-4-78HGBD-780M has a 30 years power warranty; AE Solar CME-132BDS-725 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 CME-132BDS-725 bifacial panels?
Both Gokin GK-4-78HGBD-780M and AE Solar CME-132BDS-725 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.
Shop prices: See 2 Gokin offers · See 4 AE 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.