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LX-720M/210-132+ GG vs GK-4-78HGBD-775M 4 of 19 identical Swap Change panels

Luxor Solar LX-720M/210-132+ GG vs Gokin GK-4-78HGBD-775M

Luxor Solar
LX-720M/210-132+ GG
720 Wp 23.39 % HJT Bifacial
Open panel page Datasheet PDF
VS
Gokin GK-4-78HGBD-775M
Gokin
GK-4-78HGBD-775M
775 Wp 24.10 % Back Contact Bifacial
Open panel page Datasheet PDF
The verdict

GK-4-78HGBD-775M leads on the differences that matter

The largest is module efficiency: 0.71 pp more efficient. 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 LX-720M/210-132+ GG GK-4-78HGBD-775M Difference
Module efficiency 23.39 % 24.10 % 0.71 pp more efficient
Rated power 720 Wp 775 Wp 55 W more power
Power density 231.8 Wp/m² 241.3 Wp/m² 9.5 Wp/m² higher
Product warranty 30 yrs 15 yrs 15 yrs longer
Annual degradation 0.21 %/yr 0.35 %/yr 0.14 %/yr slower
Temperature coefficient -0.240 %/°C -0.260 %/°C 0.020 %/°C better in heat
Open-circuit voltage 51.39 V 58.82 V 7.43 V apart
Module area 3.106 m² 3.212 m² 0.106 m² apart
Weight per kWp 53.8 kg/kWp 49.9 kg/kWp 3.8 kg/kWp lighter
Cell technology HJT Back Contact HJT vs Back Contact
Voltage at max power 43.68 V 48.87 V 5.19 V apart
Cell count 132 156 24 cells apart
Short-circuit current 17.54 A 16.71 A 0.83 A apart
Dimensions 2384x1303x35 mm 2465x1303x33 mm 2384x1303x35 mm vs 2465x1303x33 mm
Current at max power 16.49 A 15.86 A 0.63 A apart
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
LX-720M/210-132+ GG
24,872 kWh
GK-4-78HGBD-775M
26,205 kWh
Lifetime gap
1,333 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario LX-720M/210-132+ GG GK-4-78HGBD-775M
Standard test conditions 25 °C 100.0% of rated power 720 W 775 W
Cool, bright day 40 °C 96.1% of rated power 694 W 745 W
Typical summer roof 55 °C 92.2% of rated power 668 W 715 W
Hot roof 70 °C 88.3% of rated power 642 W 684 W
03

Full specification

Parameter LX-720M/210-132+ GG GK-4-78HGBD-775M Difference
Power and efficiency
Rated power 720 Wp 775 Wp +55 W for GK-4-78HGBD-775M
Module efficiency 23.39 % 24.10 % +0.71 pp for GK-4-78HGBD-775M
Power density 231.8 Wp/m² 241.3 Wp/m² +9.5 Wp/m² for GK-4-78HGBD-775M
Open-circuit voltage 51.39 V 58.82 V 7.43 V apart
Voltage at max power 43.68 V 48.87 V 5.19 V apart
Short-circuit current 17.54 A 16.71 A 0.83 A apart
Current at max power 16.49 A 15.86 A 0.63 A apart
Temperature
Temperature coefficient -0.240 %/°C -0.260 %/°C +0.020 %/°C for LX-720M/210-132+ GG
Mechanical
Dimensions 2384x1303x35 mm 2465x1303x33 mm 2384x1303x35 mm vs 2465x1303x33 mm
Module area 3.106 m² 3.212 m² 0.106 m² apart
Weight 38.7 kg 38.7 kg Same
Weight per kWp 53.8 kg/kWp 49.9 kg/kWp -3.8 kg/kWp for GK-4-78HGBD-775M
Warranty and degradation
Product warranty 30 yrs 15 yrs +15 yrs for LX-720M/210-132+ GG
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.21 %/yr 0.35 %/yr -0.14 %/yr for LX-720M/210-132+ GG
Technology
Cell technology HJT Back Contact HJT vs Back Contact
Cell type Monocrystalline Monocrystalline Same
Cell count 132 156 24 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#925 vs #219
GK-4-78HGBD-775M leads by 706 places
Power density
#1,347 vs #227
GK-4-78HGBD-775M leads by 1,120 places
Heat behaviour
#13 vs #511
LX-720M/210-132+ GG leads by 498 places
Weight
#7,805 vs #3,297
GK-4-78HGBD-775M leads by 4,508 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#17 vs #29
LX-720M/210-132+ GG leads by 12 places
05

More useful comparisons

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06

Written summary

07

Questions about this pairing

Which panel is better: Luxor Solar LX-720M/210-132+ GG or Gokin GK-4-78HGBD-775M?
According to our database: Gokin GK-4-78HGBD-775M has higher module efficiency (24.10% vs 23.39%); Luxor Solar LX-720M/210-132+ GG tolerates heat better (temp coeff -0.240%/°C vs -0.260%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Luxor Solar LX-720M/210-132+ GG and Gokin GK-4-78HGBD-775M?
Luxor Solar LX-720M/210-132+ GG has a module efficiency of 23.39%, while Gokin GK-4-78HGBD-775M is 24.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Luxor Solar LX-720M/210-132+ GG use vs Gokin GK-4-78HGBD-775M?
Luxor Solar LX-720M/210-132+ GG uses HJT cells; Gokin GK-4-78HGBD-775M 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 Luxor Solar LX-720M/210-132+ GG and Gokin GK-4-78HGBD-775M?
Luxor Solar LX-720M/210-132+ GG has a 30 years power warranty; Gokin GK-4-78HGBD-775M 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 Luxor Solar LX-720M/210-132+ GG and Gokin GK-4-78HGBD-775M bifacial panels?
Both Luxor Solar LX-720M/210-132+ GG and Gokin GK-4-78HGBD-775M 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.
Compare Luxor Solar and Gokin as manufacturers Portfolio, efficiency, cell technologies and warranty terms

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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.