GCL GCL-NT12R/48BGDF-445 vs GCL GCL-NT12R/48GDF
VS
The verdict
48GDF leads on the differences that matter
The largest is module efficiency: 1.50 pp more efficient. 12 of 19 comparable parameters are identical.
See all 7 differencesHow alike are they
12
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
7 of 19 parameters
What actually differs
Parameter
48BGDF-445
48GDF
Difference
Module efficiency
22.27 %
23.77 %
1.50 pp more efficient
Power density
222.7 Wp/m²
237.7 Wp/m²
15.0 Wp/m² higher
Rated power
445 Wp
475 Wp
30 W more power
Weight
21.5 kg
24.5 kg
3.0 kg lighter
Weight per kWp
48.3 kg/kWp
51.6 kg/kWp
3.3 kg/kWp lighter
Short-circuit current
15.50 A
16.23 A
0.73 A apart
Current at max power
14.76 A
15.45 A
0.69 A apart
02
What it means on a roof
Thirty years of production
Declared annual degradation, with a 1.0% first-year loss assumed for both panels because at least one datasheet omits it, 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.
48BGDF-445
14,931 kWh
48GDF
15,937 kWh
Lifetime gap
1,006 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
48BGDF-445
48GDF
Standard test conditions
25 °C
100.0% of rated power
445 W
475 W
Cool, bright day
40 °C
95.7% of rated power
426 W
454 W
Typical summer roof
55 °C
91.3% of rated power
406 W
434 W
Hot roof
70 °C
87.0% of rated power
387 W
413 W
03
Full specification
Parameter
48BGDF-445
48GDF
Difference
Power and efficiency
Rated power
445 Wp
475 Wp
+30 W for 48GDF
Module efficiency
22.27 %
23.77 %
+1.50 pp for 48GDF
Power density
222.7 Wp/m²
237.7 Wp/m²
+15.0 Wp/m² for 48GDF
Open-circuit voltage
35.68 V
36.30 V
Effectively the same
Voltage at max power
30.15 V
30.75 V
Effectively the same
Short-circuit current
15.50 A
16.23 A
0.73 A apart
Current at max power
14.76 A
15.45 A
0.69 A apart
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
1762x1134x30 mm
1762x1134x30 mm
Same
Module area
1.998 m²
1.998 m²
Same
Weight
21.5 kg
24.5 kg
-3.0 kg for 48BGDF-445
Weight per kWp
48.3 kg/kWp
51.6 kg/kWp
-3.3 kg/kWp for 48BGDF-445
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
96
96
Same
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#5,481
vs
#499
48GDF leads by 4,982 places
Power density
#5,302
vs
#467
48GDF leads by 4,835 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#2,192
vs
#4,954
48BGDF-445 leads by 2,762 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#9,381
vs
#6,608
48GDF leads by 2,773 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: GCL GCL-NT12R/48BGDF-445 or GCL GCL-NT12R/48GDF?
According to our database: GCL GCL-NT12R/48GDF has higher module efficiency (23.77% vs 22.27%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of GCL GCL-NT12R/48BGDF-445 and GCL GCL-NT12R/48GDF?
GCL GCL-NT12R/48BGDF-445 has a module efficiency of 22.27%, while GCL GCL-NT12R/48GDF is 23.77%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does GCL GCL-NT12R/48BGDF-445 use vs GCL GCL-NT12R/48GDF?
GCL GCL-NT12R/48BGDF-445 uses TOPCon cells; GCL GCL-NT12R/48GDF 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 GCL GCL-NT12R/48BGDF-445 and GCL GCL-NT12R/48GDF?
GCL GCL-NT12R/48BGDF-445 has a 30 years power warranty; GCL GCL-NT12R/48GDF 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 GCL GCL-NT12R/48BGDF-445 and GCL GCL-NT12R/48GDF bifacial panels?
Both GCL GCL-NT12R/48BGDF-445 and GCL GCL-NT12R/48GDF 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.
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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.