GK710 vs GK725 (IEC1500V) 14 of 18 identical Swap Change panels

TCL Zhonghuan HSM-ND66-GK710 vs TCL Zhonghuan HSM-ND66-GK725 (IEC1500V)

Q: Which panel is better: TCL Zhonghuan HSM-ND66-GK710 or TCL Zhonghuan HSM-ND66-GK725 (IEC1500V)?

According to our database: TCL Zhonghuan HSM-ND66-GK725 (IEC1500V) has higher module efficiency (23.30% vs 22.90%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of TCL Zhonghuan HSM-ND66-GK710 and TCL Zhonghuan HSM-ND66-GK725 (IEC1500V)?

TCL Zhonghuan HSM-ND66-GK710 has a module efficiency of 22.90%, while TCL Zhonghuan HSM-ND66-GK725 (IEC1500V) is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does TCL Zhonghuan HSM-ND66-GK710 use vs TCL Zhonghuan HSM-ND66-GK725 (IEC1500V)?

TCL Zhonghuan HSM-ND66-GK710 uses N-type cells; TCL Zhonghuan HSM-ND66-GK725 (IEC1500V) 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 TCL Zhonghuan HSM-ND66-GK710 and TCL Zhonghuan HSM-ND66-GK725 (IEC1500V)?

TCL Zhonghuan HSM-ND66-GK710 has a 30 years power warranty; TCL Zhonghuan HSM-ND66-GK725 (IEC1500V) 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 TCL Zhonghuan HSM-ND66-GK710 and TCL Zhonghuan HSM-ND66-GK725 (IEC1500V) bifacial panels?

Both TCL Zhonghuan HSM-ND66-GK710 and TCL Zhonghuan HSM-ND66-GK725 (IEC1500V) 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.

TCL Zhonghuan

HSM-ND66-GK710

710 Wp 22.90 % N-type Bifacial

Open panel page Datasheet PDF

TCL Zhonghuan

HSM-ND66-GK725 (IEC1500V)

725 Wp 23.30 % TOPCon Bifacial Incomplete

Open panel page Datasheet PDF

The verdict

GK725 (IEC1500V) leads on the differences that matter

The largest is module efficiency: 0.40 pp more efficient. 14 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 4 differences

How alike are they

14 of 18 comparable
parameters are identical

identical differs not published

What actually differs

4 of 18 parameters

Parameter GK710 GK725 (IEC1500V) Difference

Module efficiency 22.90 % 23.30 % 0.40 pp more efficient

Power density 228.6 Wp/m² 233.4 Wp/m² 4.8 Wp/m² higher

Rated power 710 Wp 725 Wp 15 W more power

Cell technology N-type TOPCon N-type vs TOPCon

What it means on a roof

Thirty years of production

Declared first-year losses, with 0.40% a year afterwards assumed for both panels, at 1,200 kWh/kWp a year

Cell temperature

Same temp coeff. for both panels (-0.280 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.

GK710

23,822 kWh

GK725 (IEC1500V)

24,325 kWh

Lifetime gap

503 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario GK710 GK725 (IEC1500V)

Standard test conditions 25 °C 100.0% of rated power 710 W 725 W

Cool, bright day 40 °C 95.8% of rated power 680 W 695 W

Typical summer roof 55 °C 91.6% of rated power 650 W 664 W

Hot roof 70 °C 87.4% of rated power 621 W 634 W

Full specification

Parameter GK710 GK725 (IEC1500V) Difference

Power and efficiency

Rated power 710 Wp 725 Wp +15 W for GK725 (IEC1500V)

Module efficiency 22.90 % 23.30 % +0.40 pp for GK725 (IEC1500V)

Power density 228.6 Wp/m² 233.4 Wp/m² +4.8 Wp/m² for GK725 (IEC1500V)

Open-circuit voltage 48.70 V 49.36 V Effectively the same

Voltage at max power 40.69 V 41.27 V Effectively the same

Short-circuit current 18.48 A 18.60 A Effectively the same

Current at max power 17.45 A 17.57 A Effectively the same

Temperature

Temperature coefficient -0.280 %/°C -0.280 %/°C Same

Mechanical

Dimensions 2384x1303x33 mm 2384x1303x33 mm Same

Module area 3.106 m² 3.106 m² Same

Weight 38.2 kg 38.2 kg Same

Weight per kWp 53.8 kg/kWp 52.7 kg/kWp Effectively the same

Warranty and degradation

Product warranty 15 yrs 15 yrs Same

Performance warranty 30 yrs 30 yrs Same

Annual degradation 0.40 %/yr - Not published by TCL Zhonghuan

Technology

Cell technology N-type TOPCon N-type vs TOPCon

Cell type Monocrystalline Monocrystalline Same

Cell count 132 132 Same

Bifacial Yes Yes Same

Against the whole database

14,005 panels

Efficiency

#2,359 vs #1,017

GK725 (IEC1500V) leads by 1,342 places

Power density

#2,474 vs #936

GK725 (IEC1500V) leads by 1,538 places

Heat behaviour

#1,309 vs #1,309

Tied - the same position in the database

Weight

#7,882 vs #6,337

GK725 (IEC1500V) leads by 1,545 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#576 vs #266

GK725 (IEC1500V) leads by 310 places

More useful comparisons

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TCL Zhonghuan HSM-ND66-GK725 (IEC1500V) vs TCL Zhonghuan HSM-ND66-GK720 (IEC1500V)

One difference: module efficiency

Written summary

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Questions about this pairing

Which panel is better: TCL Zhonghuan HSM-ND66-GK710 or TCL Zhonghuan HSM-ND66-GK725 (IEC1500V)?

According to our database: TCL Zhonghuan HSM-ND66-GK725 (IEC1500V) has higher module efficiency (23.30% vs 22.90%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of TCL Zhonghuan HSM-ND66-GK710 and TCL Zhonghuan HSM-ND66-GK725 (IEC1500V)?

TCL Zhonghuan HSM-ND66-GK710 has a module efficiency of 22.90%, while TCL Zhonghuan HSM-ND66-GK725 (IEC1500V) is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does TCL Zhonghuan HSM-ND66-GK710 use vs TCL Zhonghuan HSM-ND66-GK725 (IEC1500V)?

TCL Zhonghuan HSM-ND66-GK710 uses N-type cells; TCL Zhonghuan HSM-ND66-GK725 (IEC1500V) 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-ND66-GK710 and TCL Zhonghuan HSM-ND66-GK725 (IEC1500V)?

TCL Zhonghuan HSM-ND66-GK710 has a 30 years power warranty; TCL Zhonghuan HSM-ND66-GK725 (IEC1500V) 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-GK710 and TCL Zhonghuan HSM-ND66-GK725 (IEC1500V) bifacial panels?

Both TCL Zhonghuan HSM-ND66-GK710 and TCL Zhonghuan HSM-ND66-GK725 (IEC1500V) 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 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.