NT12R/54BGDF-520W vs GCL-NT12R/48BGDF-430 9 of 19 identical Swap Change panels

GCL NT12R/54BGDF-520W vs GCL GCL-NT12R/48BGDF-430

Q: Which panel is better: GCL NT12R/54BGDF-520W or GCL GCL-NT12R/48BGDF-430?

According to our database: GCL NT12R/54BGDF-520W has higher module efficiency (23.37% vs 21.52%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of GCL NT12R/54BGDF-520W and GCL GCL-NT12R/48BGDF-430?

GCL NT12R/54BGDF-520W has a module efficiency of 23.37%, while GCL GCL-NT12R/48BGDF-430 is 21.52%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does GCL NT12R/54BGDF-520W use vs GCL GCL-NT12R/48BGDF-430?

GCL NT12R/54BGDF-520W uses TOPCon cells; GCL GCL-NT12R/48BGDF-430 uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.

Q: What is the warranty on GCL NT12R/54BGDF-520W and GCL GCL-NT12R/48BGDF-430?

GCL NT12R/54BGDF-520W has a 30 years power warranty; GCL GCL-NT12R/48BGDF-430 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.

Q: Are GCL NT12R/54BGDF-520W and GCL GCL-NT12R/48BGDF-430 bifacial panels?

Both GCL NT12R/54BGDF-520W and GCL GCL-NT12R/48BGDF-430 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.

NT12R/54BGDF-520W

520 Wp 23.37 % TOPCon Bifacial

Open panel page Datasheet PDF

GCL-NT12R/48BGDF-430

430 Wp 21.52 % TOPCon Bifacial

Open panel page Datasheet PDF

The verdict

NT12R/54BGDF-520W leads on the differences that matter

The largest is module efficiency: 1.85 pp more efficient. 9 of 19 comparable parameters are identical.

See all 10 differences

How alike are they

9 of 19 comparable
parameters are identical

identical differs

What actually differs

10 of 19 parameters

Parameter NT12R/54BGDF-520W GCL-NT12R/48BGDF-430 Difference

Module efficiency 23.37 % 21.52 % 1.85 pp more efficient

Rated power 520 Wp 430 Wp 90 W more power

Power density 233.7 Wp/m² 215.2 Wp/m² 18.5 Wp/m² higher

Weight 27.3 kg 21.5 kg 5.8 kg lighter

Open-circuit voltage 41.48 V 34.78 V 6.70 V apart

Module area 2.225 m² 1.998 m² 0.227 m² apart

Voltage at max power 35.02 V 29.27 V 5.75 V apart

Cell count 108 96 12 cells apart

Weight per kWp 52.5 kg/kWp 50.0 kg/kWp 2.5 kg/kWp lighter

Dimensions 1962x1134x30 mm 1762x1134x30 mm 1962x1134x30 mm vs 1762x1134x30 mm

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

Cell temperature

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.

NT12R/54BGDF-520W

17,447 kWh

GCL-NT12R/48BGDF-430

14,427 kWh

Lifetime gap

3,020 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario NT12R/54BGDF-520W GCL-NT12R/48BGDF-430

Standard test conditions 25 °C 100.0% of rated power 520 W 430 W

Cool, bright day 40 °C 95.7% of rated power 497 W 411 W

Typical summer roof 55 °C 91.3% of rated power 475 W 393 W

Hot roof 70 °C 87.0% of rated power 452 W 374 W

Full specification

Parameter NT12R/54BGDF-520W GCL-NT12R/48BGDF-430 Difference

Power and efficiency

Rated power 520 Wp 430 Wp +90 W for NT12R/54BGDF-520W

Module efficiency 23.37 % 21.52 % +1.85 pp for NT12R/54BGDF-520W

Power density 233.7 Wp/m² 215.2 Wp/m² +18.5 Wp/m² for NT12R/54BGDF-520W

Open-circuit voltage 41.48 V 34.78 V 6.70 V apart

Voltage at max power 35.02 V 29.27 V 5.75 V apart

Short-circuit current 15.53 A 15.44 A Effectively the same

Current at max power 14.85 A 14.69 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 21.5 kg -5.8 kg for GCL-NT12R/48BGDF-430

Weight per kWp 52.5 kg/kWp 50.0 kg/kWp -2.5 kg/kWp for GCL-NT12R/48BGDF-430

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

Against the whole database

14,005 panels

Efficiency

#930 vs #7,853

NT12R/54BGDF-520W leads by 6,923 places

Power density

#919 vs #7,816

NT12R/54BGDF-520W leads by 6,897 places

Heat behaviour

#2,165 vs #2,165

Tied - the same position in the database

Weight

#6,043 vs #3,317

GCL-NT12R/48BGDF-430 leads by 2,726 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#5,503 vs #10,352

NT12R/54BGDF-520W leads by 4,849 places

More useful comparisons

Open the full database

Same series, other bin

GCL NT12R/54BGDF-520W vs GCL GCL-NT12R/54GDF-530

5 differences, the largest is module efficiency

Same series, other bin

GCL NT12R/54BGDF-520W vs GCL NT12R/54GDF-525W

4 differences, the largest is module efficiency

Same series, other bin

GCL NT12R/54BGDF-520W vs GCL GCL-NT12R/54GDF-525

4 differences, the largest is module efficiency

Same series, other bin

GCL NT12R/54BGDF-520W vs GCL NT12R/54GDF-520W

3 differences, the largest is open-circuit voltage

Same series, other bin

GCL NT12R/54BGDF-520W vs GCL GCL-NT12R/54GDF-520

3 differences, the largest is open-circuit voltage

Same series, other bin

GCL NT12R/54BGDF-520W vs GCL NT12R/54BGDF-515W

One difference: module efficiency

Written summary

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Questions about this pairing

Which panel is better: GCL NT12R/54BGDF-520W or GCL GCL-NT12R/48BGDF-430?

According to our database: GCL NT12R/54BGDF-520 W has higher module efficiency (23.37% vs 21.52%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of GCL NT12R/54BGDF-520W and GCL GCL-NT12R/48BGDF-430?

GCL NT12R/54BGDF-520 W has a module efficiency of 23.37%, while GCL GCL-NT12R/48BGDF-430 is 21.52%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does GCL NT12R/54BGDF-520W use vs GCL GCL-NT12R/48BGDF-430?

GCL NT12R/54BGDF-520 W uses TOPCon cells; GCL GCL-NT12R/48BGDF-430 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 NT12R/54BGDF-520W and GCL GCL-NT12R/48BGDF-430?

GCL NT12R/54BGDF-520 W has a 30 years power warranty; GCL GCL-NT12R/48BGDF-430 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 NT12R/54BGDF-520W and GCL GCL-NT12R/48BGDF-430 bifacial panels?

Both GCL NT12R/54BGDF-520 W and GCL GCL-NT12R/48BGDF-430 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.