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GR450 vs GR445 18 of 19 identical Swap Change panels

TCL Zhonghuan HSM-ND48-GR450 vs TCL Zhonghuan HSM-ND48-GR445

TCL Zhonghuan
HSM-ND48-GR450
450 Wp 22.50 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
TCL Zhonghuan
HSM-ND48-GR445
445 Wp 22.30 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

GR450 leads on the differences that matter

The largest is module efficiency: 0.20 pp more efficient. 18 of 19 comparable parameters are identical.

See the one difference
How alike are they
18 of 19 comparable
parameters are identical
identical differs
01

What actually differs

1 of 19 parameters
Parameter GR450 GR445 Difference
Module efficiency 22.50 % 22.30 % 0.20 pp more efficient
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.
GR450
15,098 kWh
GR445
14,931 kWh
Lifetime gap
167 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario GR450 GR445
Standard test conditions 25 °C 100.0% of rated power 450 W 445 W
Cool, bright day 40 °C 95.7% of rated power 430 W 426 W
Typical summer roof 55 °C 91.3% of rated power 411 W 406 W
Hot roof 70 °C 87.0% of rated power 391 W 387 W
03

Full specification

Parameter GR450 GR445 Difference
Power and efficiency
Rated power 450 Wp 445 Wp Effectively the same
Module efficiency 22.50 % 22.30 % +0.20 pp for GR450
Power density 225.2 Wp/m² 222.7 Wp/m² Effectively the same
Open-circuit voltage 35.56 V 35.36 V Effectively the same
Voltage at max power 30.13 V 29.93 V Effectively the same
Short-circuit current 16.06 A 15.99 A Effectively the same
Current at max power 14.94 A 14.87 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 54.4 kg/kWp 55.1 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 25 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
#4,222 vs #5,100
GR450 leads by 878 places
Power density
#4,225 vs #5,302
GR450 leads by 1,077 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#8,755 vs #9,435
GR450 leads by 680 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,225 vs #6,677
GR450 leads by 452 places
05

More useful comparisons

Open the full database
Same series, other bin
TCL Zhonghuan
TCL Zhonghuan HSM-ND48-GR450 vs TCL Zhonghuan HSM-ND48-GR455
One difference: module efficiency
Same series, other bin
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TCL Zhonghuan HSM-ND48-GR450 vs TCL Zhonghuan HSM-ND48-GR440
3 differences, the largest is module efficiency
Same series, other bin
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TCL Zhonghuan HSM-ND48-GR450 vs TCL Zhonghuan HSM-ND48-GR435
3 differences, the largest is module efficiency
Same manufacturer
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TCL Zhonghuan HSM-ND48-GR450 vs TCL Zhonghuan HSM-ND66-GK725 (IEC1500V)
13 differences, the largest is module efficiency
Same manufacturer
TCL Zhonghuan
TCL Zhonghuan HSM-ND48-GR450 vs TCL Zhonghuan HSM-ND66-GK725
14 differences, the largest is module efficiency
Same manufacturer
TCL Zhonghuan
TCL Zhonghuan HSM-ND48-GR450 vs TCL Zhonghuan HSM-ND66-GK720 (IEC1500V)
13 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: TCL Zhonghuan HSM-ND48-GR450 or TCL Zhonghuan HSM-ND48-GR445?
According to our database: TCL Zhonghuan HSM-ND48-GR450 has higher module efficiency (22.50% vs 22.30%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of TCL Zhonghuan HSM-ND48-GR450 and TCL Zhonghuan HSM-ND48-GR445?
TCL Zhonghuan HSM-ND48-GR450 has a module efficiency of 22.50%, while TCL Zhonghuan HSM-ND48-GR445 is 22.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does TCL Zhonghuan HSM-ND48-GR450 use vs TCL Zhonghuan HSM-ND48-GR445?
TCL Zhonghuan HSM-ND48-GR450 uses TOPCon cells; TCL Zhonghuan HSM-ND48-GR445 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 TCL Zhonghuan HSM-ND48-GR450 and TCL Zhonghuan HSM-ND48-GR445?
TCL Zhonghuan HSM-ND48-GR450 has a 30 years power warranty; TCL Zhonghuan HSM-ND48-GR445 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-ND48-GR450 and TCL Zhonghuan HSM-ND48-GR445 bifacial panels?
Both TCL Zhonghuan HSM-ND48-GR450 and TCL Zhonghuan HSM-ND48-GR445 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 25 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.