Skip to main content
54GDF-525 vs 48GDF 12 of 19 identical Swap Change panels

GCL GCL-NT12R/54GDF-525 vs GCL GCL-NT12R/48GDF

GCL-NT12R/54GDF-525
525 Wp 23.60 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
GCL-NT12R/48GDF
475 Wp 23.77 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

54GDF-525 leads on the differences that matter

The largest is rated power: 50 W more power. 12 of 19 comparable parameters are identical.

See all 7 differences
How alike are they
12 of 19 comparable
parameters are identical
identical differs
01

What actually differs

7 of 19 parameters
Parameter 54GDF-525 48GDF Difference
Rated power 525 Wp 475 Wp 50 W more power
Weight 27.3 kg 24.5 kg 2.8 kg lighter
Open-circuit voltage 40.30 V 36.30 V 4.00 V apart
Module area 2.225 m² 1.998 m² 0.227 m² apart
Cell count 108 96 12 cells apart
Voltage at max power 34.20 V 30.75 V 3.45 V apart
Dimensions 1962x1134x30 mm 1762x1134x30 mm 1962x1134x30 mm vs 1762x1134x30 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
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.
54GDF-525
17,615 kWh
48GDF
15,937 kWh
Lifetime gap
1,678 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 54GDF-525 48GDF
Standard test conditions 25 °C 100.0% of rated power 525 W 475 W
Cool, bright day 40 °C 95.7% of rated power 502 W 454 W
Typical summer roof 55 °C 91.3% of rated power 479 W 434 W
Hot roof 70 °C 87.0% of rated power 456 W 413 W
03

Full specification

Parameter 54GDF-525 48GDF Difference
Power and efficiency
Rated power 525 Wp 475 Wp +50 W for 54GDF-525
Module efficiency 23.60 % 23.77 % Effectively the same
Power density 236.0 Wp/m² 237.7 Wp/m² Effectively the same
Open-circuit voltage 40.30 V 36.30 V 4.00 V apart
Voltage at max power 34.20 V 30.75 V 3.45 V apart
Short-circuit current 16.16 A 16.23 A Effectively the same
Current at max power 15.35 A 15.45 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1962x1134x30 mm 1762x1134x30 mm 1962x1134x30 mm vs 1762x1134x30 mm
Module area 2.225 m² 1.998 m² 0.227 m² apart
Weight 27.3 kg 24.5 kg -2.8 kg for 48GDF
Weight per kWp 52.0 kg/kWp 51.6 kg/kWp Effectively the same
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 108 96 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#627 vs #499
48GDF leads by 128 places
Power density
#653 vs #467
48GDF leads by 186 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#5,417 vs #4,954
48GDF leads by 463 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#5,035 vs #6,608
54GDF-525 leads by 1,573 places
05

More useful comparisons

Open the full database
Same series, other bin
GCL GCL-NT12R/54GDF-525 vs GCL GCL-NT12R/54GDF-530
One difference: module efficiency
Same series, other bin
GCL GCL-NT12R/54GDF-525 vs GCL NT12R/54GDF-525W
The same specification on paper
Same series, other bin
GCL GCL-NT12R/54GDF-525 vs GCL NT12R/54BGDF-520W
4 differences, the largest is module efficiency
Same series, other bin
GCL GCL-NT12R/54GDF-525 vs GCL NT12R/54GDF-520W
One difference: module efficiency
Same series, other bin
GCL GCL-NT12R/54GDF-525 vs GCL GCL-NT12R/54GDF-520
One difference: module efficiency
Same series, other bin
GCL GCL-NT12R/54GDF-525 vs GCL NT12R/54BGDF-515W
5 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: GCL GCL-NT12R/54GDF-525 or GCL GCL-NT12R/48GDF?
According to our database: GCL GCL-NT12R/48GDF has higher module efficiency (23.77% vs 23.60%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of GCL GCL-NT12R/54GDF-525 and GCL GCL-NT12R/48GDF?
GCL GCL-NT12R/54GDF-525 has a module efficiency of 23.60%, 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/54GDF-525 use vs GCL GCL-NT12R/48GDF?
GCL GCL-NT12R/54GDF-525 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/54GDF-525 and GCL GCL-NT12R/48GDF?
GCL GCL-NT12R/54GDF-525 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/54GDF-525 and GCL GCL-NT12R/48GDF bifacial panels?
Both GCL GCL-NT12R/54GDF-525 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.

Shop prices: See 6 GCL 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.