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GK700 vs GK715 16 of 19 identical Swap Change panels

TCL Zhonghuan HSM-ND66-GK700 vs TCL Zhonghuan HSM-ND66-GK715

TCL Zhonghuan
HSM-ND66-GK700
700 Wp 22.50 % N-type Bifacial
Open panel page Datasheet PDF
VS
TCL Zhonghuan
HSM-ND66-GK715
715 Wp 23.00 % N-type Bifacial
Open panel page Datasheet PDF
The verdict

GK715 leads on the differences that matter

The largest is module efficiency: 0.50 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter GK700 GK715 Difference
Module efficiency 22.50 % 23.00 % 0.50 pp more efficient
Power density 225.3 Wp/m² 230.2 Wp/m² 4.8 Wp/m² higher
Rated power 700 Wp 715 Wp 15 W more power
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 (-0.280 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
GK700
23,486 kWh
GK715
23,990 kWh
Lifetime gap
504 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario GK700 GK715
Standard test conditions 25 °C 100.0% of rated power 700 W 715 W
Cool, bright day 40 °C 95.8% of rated power 671 W 685 W
Typical summer roof 55 °C 91.6% of rated power 641 W 655 W
Hot roof 70 °C 87.4% of rated power 612 W 625 W
03

Full specification

Parameter GK700 GK715 Difference
Power and efficiency
Rated power 700 Wp 715 Wp +15 W for GK715
Module efficiency 22.50 % 23.00 % +0.50 pp for GK715
Power density 225.3 Wp/m² 230.2 Wp/m² +4.8 Wp/m² for GK715
Open-circuit voltage 48.26 V 48.92 V Effectively the same
Voltage at max power 40.31 V 40.89 V Effectively the same
Short-circuit current 18.40 A 18.52 A Effectively the same
Current at max power 17.37 A 17.49 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 54.6 kg/kWp 53.4 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 0.40 %/yr Same
Technology
Cell technology N-type N-type Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#4,222 vs #1,919
GK715 leads by 2,303 places
Power density
#3,989 vs #2,018
GK715 leads by 1,971 places
Heat behaviour
#1,309 vs #1,309
Tied - the same position in the database
Weight
#8,935 vs #7,356
GK715 leads by 1,579 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#944 vs #450
GK715 leads by 494 places
05

More useful comparisons

Open the full database
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TCL Zhonghuan HSM-ND66-GK700 vs TCL Zhonghuan HSM-ND66-GK725
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TCL Zhonghuan HSM-ND66-GK700 vs TCL Zhonghuan HSM-ND66-GK720
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TCL Zhonghuan HSM-ND66-GK700 vs TCL Zhonghuan HSM-ND66-GK710
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TCL Zhonghuan HSM-ND66-GK700 vs TCL Zhonghuan HSM-ND66-GK705
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TCL Zhonghuan HSM-ND66-GK700 vs TCL Zhonghuan HSM-ND66-GK725 (IEC1500V)
5 differences, the largest is module efficiency
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TCL Zhonghuan HSM-ND66-GK700 vs TCL Zhonghuan HSM-ND66-GK720 (IEC1500V)
4 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: TCL Zhonghuan HSM-ND66-GK700 or TCL Zhonghuan HSM-ND66-GK715?
According to our database: TCL Zhonghuan HSM-ND66-GK715 has higher module efficiency (23.00% vs 22.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of TCL Zhonghuan HSM-ND66-GK700 and TCL Zhonghuan HSM-ND66-GK715?
TCL Zhonghuan HSM-ND66-GK700 has a module efficiency of 22.50%, while TCL Zhonghuan HSM-ND66-GK715 is 23.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does TCL Zhonghuan HSM-ND66-GK700 use vs TCL Zhonghuan HSM-ND66-GK715?
TCL Zhonghuan HSM-ND66-GK700 uses N-type cells; TCL Zhonghuan HSM-ND66-GK715 uses N-type. 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-GK700 and TCL Zhonghuan HSM-ND66-GK715?
TCL Zhonghuan HSM-ND66-GK700 has a 30 years power warranty; TCL Zhonghuan HSM-ND66-GK715 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-GK700 and TCL Zhonghuan HSM-ND66-GK715 bifacial panels?
Both TCL Zhonghuan HSM-ND66-GK700 and TCL Zhonghuan HSM-ND66-GK715 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.