AIKO AIKO-G645-MCH72Mw vs AIKO AIKO-G625-MCH72Mw
VS
The verdict
G645-MCH72Mw leads on the differences that matter
The largest is module efficiency: 0.80 pp more efficient. 15 of 19 comparable parameters are identical.
See all 4 differencesHow alike are they
15
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
4 of 19 parameters
What actually differs
Parameter
G645-MCH72Mw
G625-MCH72Mw
Difference
Module efficiency
23.90 %
23.10 %
0.80 pp more efficient
Power density
238.8 Wp/m²
231.4 Wp/m²
7.4 Wp/m² higher
Rated power
645 Wp
625 Wp
20 W more power
Cell technology
N-type
Back Contact
N-type vs Back Contact
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
Same temp coeff. for both panels (-0.260 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
G645-MCH72Mw
21,809 kWh
G625-MCH72Mw
21,133 kWh
Lifetime gap
676 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
G645-MCH72Mw
G625-MCH72Mw
Standard test conditions
25 °C
100.0% of rated power
645 W
625 W
Cool, bright day
40 °C
96.1% of rated power
620 W
601 W
Typical summer roof
55 °C
92.2% of rated power
595 W
576 W
Hot roof
70 °C
88.3% of rated power
570 W
552 W
03
Full specification
Parameter
G645-MCH72Mw
G625-MCH72Mw
Difference
Power and efficiency
Rated power
645 Wp
625 Wp
+20 W for G645-MCH72Mw
Module efficiency
23.90 %
23.10 %
+0.80 pp for G645-MCH72Mw
Power density
238.8 Wp/m²
231.4 Wp/m²
+7.4 Wp/m² for G645-MCH72Mw
Open-circuit voltage
54.30 V
53.90 V
Effectively the same
Voltage at max power
45.00 V
44.60 V
Effectively the same
Short-circuit current
15.06 A
14.82 A
Effectively the same
Current at max power
14.34 A
14.02 A
Effectively the same
Temperature
Temperature coefficient
-0.260 %/°C
-0.260 %/°C
Same
Mechanical
Dimensions
2382x1134x30 mm
2382x1134x30 mm
Same
Module area
2.701 m²
2.701 m²
Same
Weight
31.5 kg
31.5 kg
Same
Weight per kWp
48.8 kg/kWp
50.4 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
15 yrs
15 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.35 %/yr
0.35 %/yr
Same
Technology
Cell technology
N-type
Back Contact
N-type vs Back Contact
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
144
144
Same
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#351
vs
#1,570
G645-MCH72Mw leads by 1,219 places
Power density
#356
vs
#1,513
G645-MCH72Mw leads by 1,157 places
Heat behaviour
#511
vs
#511
Tied - the same position in the database
Weight
#2,492
vs
#3,781
G645-MCH72Mw leads by 1,289 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1,065
vs
#1,849
G645-MCH72Mw leads by 784 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: AIKO AIKO-G645-MCH72Mw or AIKO AIKO-G625-MCH72Mw?
According to our database: AIKO AIKO-G645-MCH72Mw has higher module efficiency (23.90% vs 23.10%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AIKO AIKO-G645-MCH72Mw and AIKO AIKO-G625-MCH72Mw?
AIKO AIKO-G645-MCH72Mw has a module efficiency of 23.90%, while AIKO AIKO-G625-MCH72Mw is 23.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AIKO AIKO-G645-MCH72Mw use vs AIKO AIKO-G625-MCH72Mw?
AIKO AIKO-G645-MCH72Mw uses N-type cells; AIKO AIKO-G625-MCH72Mw uses Back Contact. 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 AIKO AIKO-G645-MCH72Mw and AIKO AIKO-G625-MCH72Mw?
AIKO AIKO-G645-MCH72Mw has a 30 years power warranty; AIKO AIKO-G625-MCH72Mw 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.
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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.