Jetion JT445SNt(B) vs Jetion JT790SXt(B)
VS
The verdict
JT790SXt(B) leads on the differences that matter
The largest is module efficiency: 1.10 pp more efficient. 7 of 19 comparable parameters are identical.
See all 12 differencesHow alike are they
7
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
12 of 19 parameters
What actually differs
Parameter
JT445SNt(B)
JT790SXt(B)
Difference
Module efficiency
22.30 %
23.40 %
1.10 pp more efficient
Rated power
445 Wp
790 Wp
345 W more power
Power density
222.7 Wp/m²
233.6 Wp/m²
10.9 Wp/m² higher
Weight
23.7 kg
40.0 kg
16.3 kg lighter
Open-circuit voltage
35.50 V
53.98 V
18.48 V apart
Short-circuit current
15.99 A
18.61 A
2.62 A apart
Module area
1.998 m²
3.381 m²
1.383 m² apart
Voltage at max power
29.69 V
45.39 V
15.70 V apart
Current at max power
14.99 A
17.41 A
2.42 A apart
Cell count
96
144
48 cells apart
Weight per kWp
53.3 kg/kWp
50.6 kg/kWp
2.6 kg/kWp lighter
Dimensions
1762x1134x30 mm
2595x1303x33 mm
1762x1134x30 mm vs 2595x1303x33 mm
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.
JT445SNt(B)
14,931 kWh
JT790SXt(B)
26,506 kWh
Lifetime gap
11,575 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
JT445SNt(B)
JT790SXt(B)
Standard test conditions
25 °C
100.0% of rated power
445 W
790 W
Cool, bright day
40 °C
95.7% of rated power
426 W
756 W
Typical summer roof
55 °C
91.3% of rated power
406 W
721 W
Hot roof
70 °C
87.0% of rated power
387 W
687 W
03
Full specification
Parameter
JT445SNt(B)
JT790SXt(B)
Difference
Power and efficiency
Rated power
445 Wp
790 Wp
+345 W for JT790SXt(B)
Module efficiency
22.30 %
23.40 %
+1.10 pp for JT790SXt(B)
Power density
222.7 Wp/m²
233.6 Wp/m²
+10.9 Wp/m² for JT790SXt(B)
Open-circuit voltage
35.50 V
53.98 V
18.48 V apart
Voltage at max power
29.69 V
45.39 V
15.70 V apart
Short-circuit current
15.99 A
18.61 A
2.62 A apart
Current at max power
14.99 A
17.41 A
2.42 A apart
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
1762x1134x30 mm
2595x1303x33 mm
1762x1134x30 mm vs 2595x1303x33 mm
Module area
1.998 m²
3.381 m²
1.383 m² apart
Weight
23.7 kg
40.0 kg
-16.3 kg for JT445SNt(B)
Weight per kWp
53.3 kg/kWp
50.6 kg/kWp
-2.6 kg/kWp for JT790SXt(B)
Warranty and degradation
Product warranty
12 yrs
12 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
144
48 cells apart
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#5,100
vs
#882
JT790SXt(B) leads by 4,218 places
Power density
#5,302
vs
#928
JT790SXt(B) leads by 4,374 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#7,098
vs
#4,073
JT790SXt(B) leads by 3,025 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#9,435
vs
#76
JT790SXt(B) leads by 9,359 places
05
Open the full database
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The same specification on paper
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Jetion JT445SNt(B) or Jetion JT790SXt(B)?
According to our database: Jetion JT790SXt(B) has higher module efficiency (23.40% vs 22.30%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jetion JT445SNt(B) and Jetion JT790SXt(B)?
Jetion JT445SNt(B) has a module efficiency of 22.30%, while Jetion JT790SXt(B) is 23.40%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jetion JT445SNt(B) use vs Jetion JT790SXt(B)?
Jetion JT445SNt(B) uses TOPCon cells; Jetion JT790SXt(B) 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 Jetion JT445SNt(B) and Jetion JT790SXt(B)?
Jetion JT445SNt(B) has a 30 years power warranty; Jetion JT790SXt(B) 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 Jetion JT445SNt(B) and Jetion JT790SXt(B) bifacial panels?
Both Jetion JT445SNt(B) and Jetion JT790SXt(B) 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 2 Jetion 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.