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ND66-GK720 vs BD54-WA460 4 of 19 identical Swap Change panels

TCL Zhonghuan HSM-ND66-GK720 vs TCL Zhonghuan HSM-BD54-WA460

TCL Zhonghuan
HSM-ND66-GK720
720 Wp 23.20 % N-type Bifacial
Open panel page Datasheet PDF
VS
TCL Zhonghuan
HSM-BD54-WA460
460 Wp 23.10 % Back Contact
Open panel page Datasheet PDF
The verdict

BD54-WA460 leads on the differences that matter

The largest is rated power: 260 W more power. 4 of 19 comparable parameters are identical.

See all 15 differences
How alike are they
4 of 19 comparable
parameters are identical
identical differs
01

What actually differs

15 of 19 parameters
Parameter ND66-GK720 BD54-WA460 Difference
Rated power 720 Wp 460 Wp 260 W more power
Weight 38.2 kg 21.5 kg 16.7 kg lighter
Product warranty 15 yrs 25 yrs 10 yrs longer
Temperature coefficient -0.280 %/°C -0.260 %/°C 0.020 %/°C better in heat
Weight per kWp 53.1 kg/kWp 46.7 kg/kWp 6.3 kg/kWp lighter
Open-circuit voltage 49.14 V 41.06 V 8.08 V apart
Short-circuit current 18.56 A 14.25 A 4.31 A apart
Module area 3.106 m² 1.992 m² 1.114 m² apart
Cell technology N-type Back Contact N-type vs Back Contact
Annual degradation 0.40 %/yr 0.35 %/yr 0.05 %/yr slower
Voltage at max power 41.08 V 34.62 V 6.46 V apart
Current at max power 17.53 A 13.29 A 4.24 A apart
Cell count 132 108 24 cells apart
Bifacial Yes No Yes vs No
Dimensions 2384x1303x33 mm 1757x1134x30 mm 2384x1303x33 mm vs 1757x1134x30 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
ND66-GK720
24,157 kWh
BD54-WA460
15,554 kWh
Lifetime gap
8,603 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario ND66-GK720 BD54-WA460
Standard test conditions 25 °C 100.0% of rated power 720 W 460 W
Cool, bright day 40 °C 95.8% of rated power 690 W 442 W
Typical summer roof 55 °C 91.6% of rated power 660 W 424 W
Hot roof 70 °C 87.4% of rated power 629 W 406 W
03

Full specification

Parameter ND66-GK720 BD54-WA460 Difference
Power and efficiency
Rated power 720 Wp 460 Wp +260 W for ND66-GK720
Module efficiency 23.20 % 23.10 % Effectively the same
Power density 231.8 Wp/m² 230.9 Wp/m² Effectively the same
Open-circuit voltage 49.14 V 41.06 V 8.08 V apart
Voltage at max power 41.08 V 34.62 V 6.46 V apart
Short-circuit current 18.56 A 14.25 A 4.31 A apart
Current at max power 17.53 A 13.29 A 4.24 A apart
Temperature
Temperature coefficient -0.280 %/°C -0.260 %/°C +0.020 %/°C for BD54-WA460
Mechanical
Dimensions 2384x1303x33 mm 1757x1134x30 mm 2384x1303x33 mm vs 1757x1134x30 mm
Module area 3.106 m² 1.992 m² 1.114 m² apart
Weight 38.2 kg 21.5 kg -16.7 kg for BD54-WA460
Weight per kWp 53.1 kg/kWp 46.7 kg/kWp -6.3 kg/kWp for BD54-WA460
Warranty and degradation
Product warranty 15 yrs 25 yrs +10 yrs for BD54-WA460
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.35 %/yr -0.05 %/yr for BD54-WA460
Technology
Cell technology N-type Back Contact N-type vs Back Contact
Cell type Monocrystalline Monocrystalline Same
Cell count 132 108 24 cells apart
Bifacial Yes No Yes vs No
04

Against the whole database

14,005 panels
Efficiency
#1,306 vs #1,570
ND66-GK720 leads by 264 places
Power density
#1,347 vs #1,638
ND66-GK720 leads by 291 places
Heat behaviour
#1,309 vs #511
BD54-WA460 leads by 798 places
Weight
#6,810 vs #1,324
BD54-WA460 leads by 5,486 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#339 vs #5,043
ND66-GK720 leads by 4,704 places
05

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06

Written summary

07

Questions about this pairing

Which panel is better: TCL Zhonghuan HSM-ND66-GK720 or TCL Zhonghuan HSM-BD54-WA460?
According to our database: TCL Zhonghuan HSM-ND66-GK720 has higher module efficiency (23.20% vs 23.10%); TCL Zhonghuan HSM-BD54-WA460 tolerates heat better (temp coeff -0.260%/°C vs -0.280%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of TCL Zhonghuan HSM-ND66-GK720 and TCL Zhonghuan HSM-BD54-WA460?
TCL Zhonghuan HSM-ND66-GK720 has a module efficiency of 23.20%, while TCL Zhonghuan HSM-BD54-WA460 is 23.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does TCL Zhonghuan HSM-ND66-GK720 use vs TCL Zhonghuan HSM-BD54-WA460?
TCL Zhonghuan HSM-ND66-GK720 uses N-type cells; TCL Zhonghuan HSM-BD54-WA460 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 TCL Zhonghuan HSM-ND66-GK720 and TCL Zhonghuan HSM-BD54-WA460?
TCL Zhonghuan HSM-ND66-GK720 has a 30 years power warranty; TCL Zhonghuan HSM-BD54-WA460 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 TCL Zhonghuan HSM-ND66-GK720 and TCL Zhonghuan HSM-BD54-WA460 bifacial panels?
TCL Zhonghuan HSM-ND66-GK720 is bifacial (captures light from both faces); TCL Zhonghuan HSM-BD54-WA460 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Shop prices: See 20 TCL Zhonghuan 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.