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GCL-NT12R/48GDF vs NT12R/48GDF-440W 13 of 19 identical Swap Change panels

GCL GCL-NT12R/48GDF vs GCL NT12R/48GDF-440W

GCL-NT12R/48GDF
475 Wp 23.77 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
NT12R/48GDF-440W
440 Wp 22.02 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

GCL-NT12R/48GDF leads on the differences that matter

The largest is module efficiency: 1.75 pp more efficient. 13 of 19 comparable parameters are identical.

See all 6 differences
How alike are they
13 of 19 comparable
parameters are identical
identical differs
01

What actually differs

6 of 19 parameters
Parameter GCL-NT12R/48GDF NT12R/48GDF-440W Difference
Module efficiency 23.77 % 22.02 % 1.75 pp more efficient
Power density 237.7 Wp/m² 220.2 Wp/m² 17.5 Wp/m² higher
Rated power 475 Wp 440 Wp 35 W more power
Weight per kWp 51.6 kg/kWp 55.7 kg/kWp 4.1 kg/kWp lighter
Open-circuit voltage 36.30 V 34.55 V 1.75 V apart
Voltage at max power 30.75 V 29.24 V 1.51 V apart
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.
GCL-NT12R/48GDF
15,937 kWh
NT12R/48GDF-440W
14,763 kWh
Lifetime gap
1,174 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario GCL-NT12R/48GDF NT12R/48GDF-440W
Standard test conditions 25 °C 100.0% of rated power 475 W 440 W
Cool, bright day 40 °C 95.7% of rated power 454 W 421 W
Typical summer roof 55 °C 91.3% of rated power 434 W 402 W
Hot roof 70 °C 87.0% of rated power 413 W 383 W
03

Full specification

Parameter GCL-NT12R/48GDF NT12R/48GDF-440W Difference
Power and efficiency
Rated power 475 Wp 440 Wp +35 W for GCL-NT12R/48GDF
Module efficiency 23.77 % 22.02 % +1.75 pp for GCL-NT12R/48GDF
Power density 237.7 Wp/m² 220.2 Wp/m² +17.5 Wp/m² for GCL-NT12R/48GDF
Open-circuit voltage 36.30 V 34.55 V 1.75 V apart
Voltage at max power 30.75 V 29.24 V 1.51 V apart
Short-circuit current 16.23 A 15.85 A Effectively the same
Current at max power 15.45 A 15.05 A Effectively the same
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 24.5 kg 24.5 kg Same
Weight per kWp 51.6 kg/kWp 55.7 kg/kWp -4.1 kg/kWp for GCL-NT12R/48GDF
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

Against the whole database

14,005 panels
Efficiency
#499 vs #6,329
GCL-NT12R/48GDF leads by 5,830 places
Power density
#467 vs #6,328
GCL-NT12R/48GDF leads by 5,861 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#4,954 vs #10,051
GCL-NT12R/48GDF leads by 5,097 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,608 vs #9,828
GCL-NT12R/48GDF leads by 3,220 places
05

More useful comparisons

Open the full database
Same series, other bin
GCL GCL-NT12R/48GDF vs GCL GCL-NT12R/54GDF-530
7 differences, the largest is rated power
Same series, other bin
GCL GCL-NT12R/48GDF vs GCL NT12R/54GDF-525W
7 differences, the largest is rated power
Same series, other bin
GCL GCL-NT12R/48GDF vs GCL GCL-NT12R/54GDF-525
7 differences, the largest is rated power
Same series, other bin
GCL GCL-NT12R/48GDF vs GCL NT12R/54BGDF-520W
11 differences, the largest is rated power
Same series, other bin
GCL GCL-NT12R/48GDF vs GCL NT12R/54GDF-520W
9 differences, the largest is rated power
Same series, other bin
GCL GCL-NT12R/48GDF vs GCL GCL-NT12R/54GDF-520
9 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: GCL GCL-NT12R/48GDF or GCL NT12R/48GDF-440W?
According to our database: GCL GCL-NT12R/48GDF has higher module efficiency (23.77% vs 22.02%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of GCL GCL-NT12R/48GDF and GCL NT12R/48GDF-440W?
GCL GCL-NT12R/48GDF has a module efficiency of 23.77%, while GCL NT12R/48GDF-440 W is 22.02%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does GCL GCL-NT12R/48GDF use vs GCL NT12R/48GDF-440W?
GCL GCL-NT12R/48GDF uses TOPCon cells; GCL NT12R/48GDF-440 W 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/48GDF and GCL NT12R/48GDF-440W?
GCL GCL-NT12R/48GDF has a 30 years power warranty; GCL NT12R/48GDF-440 W 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/48GDF and GCL NT12R/48GDF-440W bifacial panels?
Both GCL GCL-NT12R/48GDF and GCL NT12R/48GDF-440 W 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.