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HS640TC-MHD-D vs HS710TC-MHG-D 10 of 18 identical Swap Change panels

Horay Solar HS640TC-MHD-D vs Horay Solar HS710TC-MHG-D

HS640TC-MHD-D
640 Wp 22.90 % N-type Bifacial
Open panel page Datasheet PDF
VS
HS710TC-MHG-D
710 Wp 22.90 % TOPCon Bifacial Incomplete
Open panel page Datasheet PDF
The verdict

8 differences, and they point both ways

The largest is rated power: 70 W more power. 10 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 8 differences
How alike are they
10 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

8 of 18 parameters
Parameter HS640TC-MHD-D HS710TC-MHG-D Difference
Rated power 640 Wp 710 Wp 70 W more power
Weight 34.5 kg 38.5 kg 4.0 kg lighter
Module area 2.795 m² 3.106 m² 0.311 m² apart
Short-circuit current 16.71 A 18.40 A 1.69 A apart
Cell technology N-type TOPCon N-type vs TOPCon
Cell count 144 132 12 cells apart
Current at max power 15.69 A 17.36 A 1.67 A apart
Dimensions 2465x1134x30 mm 2384x1303x33 mm 2465x1134x30 mm vs 2384x1303x33 mm
02

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
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.
HS640TC-MHD-D
21,473 kWh
HS710TC-MHG-D
23,822 kWh
Lifetime gap
2,349 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario HS640TC-MHD-D HS710TC-MHG-D
Standard test conditions 25 °C 100.0% of rated power 640 W 710 W
Cool, bright day 40 °C 95.8% of rated power 613 W 680 W
Typical summer roof 55 °C 91.6% of rated power 586 W 650 W
Hot roof 70 °C 87.4% of rated power 559 W 621 W
03

Full specification

Parameter HS640TC-MHD-D HS710TC-MHG-D Difference
Power and efficiency
Rated power 640 Wp 710 Wp +70 W for HS710TC-MHG-D
Module efficiency 22.90 % 22.90 % Same
Power density 229.0 Wp/m² 228.6 Wp/m² Effectively the same
Open-circuit voltage 48.08 V 49.00 V Effectively the same
Voltage at max power 40.79 V 40.90 V Effectively the same
Short-circuit current 16.71 A 18.40 A 1.69 A apart
Current at max power 15.69 A 17.36 A 1.67 A apart
Temperature
Temperature coefficient -0.280 %/°C -0.280 %/°C Same
Mechanical
Dimensions 2465x1134x30 mm 2384x1303x33 mm 2465x1134x30 mm vs 2384x1303x33 mm
Module area 2.795 m² 3.106 m² 0.311 m² apart
Weight 34.5 kg 38.5 kg -4.0 kg for HS640TC-MHD-D
Weight per kWp 53.9 kg/kWp 54.2 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 Horay Solar
Technology
Cell technology N-type TOPCon N-type vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 144 132 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#2,359 vs #2,359
Tied - the same position in the database
Power density
#2,389 vs #2,474
HS640TC-MHD-D leads by 85 places
Heat behaviour
#1,309 vs #1,309
Tied - the same position in the database
Weight
#8,037 vs #8,457
HS640TC-MHD-D leads by 420 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#1,704 vs #597
HS710TC-MHG-D leads by 1,107 places
05

More useful comparisons

Open the full database
Same series, other bin
Horay Solar HS640TC-MHD-D vs Horay Solar HS650TC-MHD-D
3 differences, the largest is module efficiency
Same series, other bin
Horay Solar HS640TC-MHD-D vs Horay Solar HS645TC-MHD-D
One difference: module efficiency
Same series, other bin
Horay Solar HS640TC-MHD-D vs Horay Solar HS635TC-MHD-D
One difference: module efficiency
Same series, other bin
Horay Solar HS640TC-MHD-D vs Horay Solar HS630TC-MHD-D
3 differences, the largest is module efficiency
Same series, other bin
Horay Solar HS710TC-MHG-D vs Horay Solar HS720TC-MHG-D
3 differences, the largest is module efficiency
Same series, other bin
Horay Solar HS710TC-MHG-D vs Horay Solar HS700TC-MHG-D
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Horay Solar HS640TC-MHD-D or Horay Solar HS710TC-MHG-D?
According to our database: both panels are closely matched on key specs - the decision often comes down to price and local availability. See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Horay Solar HS640TC-MHD-D and Horay Solar HS710TC-MHG-D?
Horay Solar HS640TC-MHD-D has a module efficiency of 22.90%, while Horay Solar HS710TC-MHG-D is 22.90%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Horay Solar HS640TC-MHD-D use vs Horay Solar HS710TC-MHG-D?
Horay Solar HS640TC-MHD-D uses N-type cells; Horay Solar HS710TC-MHG-D 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 Horay Solar HS640TC-MHD-D and Horay Solar HS710TC-MHG-D?
Horay Solar HS640TC-MHD-D has a 30 years power warranty; Horay Solar HS710TC-MHG-D 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 Horay Solar HS640TC-MHD-D and Horay Solar HS710TC-MHG-D bifacial panels?
Both Horay Solar HS640TC-MHD-D and Horay Solar HS710TC-MHG-D 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.

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.