Haitai Solar JT690SLkB vs Haitai Solar JT715SLkB
VS
The verdict
JT715SLkB leads on the differences that matter
The largest is module efficiency: 0.80 pp more efficient. 15 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 3 differencesHow alike are they
15
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
3 of 18 parameters
What actually differs
Parameter
JT690SLkB
JT715SLkB
Difference
Module efficiency
22.20 %
23.00 %
0.80 pp more efficient
Power density
222.1 Wp/m²
230.2 Wp/m²
8.0 Wp/m² higher
Rated power
690 Wp
715 Wp
25 W more power
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 (-0.240 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
JT690SLkB
23,151 kWh
JT715SLkB
23,990 kWh
Lifetime gap
839 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
JT690SLkB
JT715SLkB
Standard test conditions
25 °C
100.0% of rated power
690 W
715 W
Cool, bright day
40 °C
96.4% of rated power
665 W
689 W
Typical summer roof
55 °C
92.8% of rated power
640 W
664 W
Hot roof
70 °C
89.2% of rated power
615 W
638 W
03
Full specification
Parameter
JT690SLkB
JT715SLkB
Difference
Power and efficiency
Rated power
690 Wp
715 Wp
+25 W for JT715SLkB
Module efficiency
22.20 %
23.00 %
+0.80 pp for JT715SLkB
Power density
222.1 Wp/m²
230.2 Wp/m²
+8.0 Wp/m² for JT715SLkB
Open-circuit voltage
49.70 V
50.45 V
Effectively the same
Voltage at max power
41.80 V
42.55 V
Effectively the same
Short-circuit current
17.31 A
17.61 A
Effectively the same
Current at max power
16.51 A
16.81 A
Effectively the same
Temperature
Temperature coefficient
-0.240 %/°C
-0.240 %/°C
Same
Mechanical
Dimensions
2384x1303x33 mm
2384x1303x33 mm
Same
Module area
3.106 m²
3.106 m²
Same
Weight
37.3 kg
37.3 kg
Same
Weight per kWp
54.1 kg/kWp
52.2 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
15 yrs
15 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
-
-
Neither datasheet publishes this
Technology
Cell technology
HJT
HJT
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
132
Same
Bifacial
Yes
Yes
Same
04
14,129 panels
Against the whole database
Efficiency
#5,881
vs
#1,970
JT715SLkB leads by 3,911 places
Power density
#5,797
vs
#2,070
JT715SLkB leads by 3,727 places
Heat behaviour
#13
vs
#13
Tied - the same position in the database
Weight
#8,354
vs
#5,676
JT715SLkB leads by 2,678 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1,276
vs
#450
JT715SLkB leads by 826 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Haitai Solar JT690SLkB or Haitai Solar JT715SLkB?
According to our database: Haitai Solar JT715SLkB has higher module efficiency (23.00% vs 22.20%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Haitai Solar JT690SLkB and Haitai Solar JT715SLkB?
Haitai Solar JT690SLkB has a module efficiency of 22.20%, while Haitai Solar JT715SLkB is 23.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Haitai Solar JT690SLkB use vs Haitai Solar JT715SLkB?
Haitai Solar JT690SLkB uses HJT cells; Haitai Solar JT715SLkB uses HJT. 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 Haitai Solar JT690SLkB and Haitai Solar JT715SLkB?
Haitai Solar JT690SLkB has a 30 years power warranty; Haitai Solar JT715SLkB 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 Haitai Solar JT690SLkB and Haitai Solar JT715SLkB bifacial panels?
Both Haitai Solar JT690SLkB and Haitai Solar JT715SLkB 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.