Jinko Solar JS320P vs Jinko Solar JS310P
VS
The verdict
JS320P leads on the differences that matter
The largest is module efficiency: 0.50 pp more efficient. 14 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 4 differencesHow alike are they
14
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
4 of 18 parameters
What actually differs
Parameter
JS320P
JS310P
Difference
Module efficiency
16.40 %
15.90 %
0.50 pp more efficient
Power density
164.9 Wp/m²
159.8 Wp/m²
5.2 Wp/m² higher
Rated power
320 Wp
310 Wp
10 W more power
Weight per kWp
73.4 kg/kWp
75.8 kg/kWp
2.4 kg/kWp lighter
02
What it means on a roof
Thirty years of production
A 1.0% first-year loss then 0.40% a year, assumed for both panels, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.420 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
JS320P
10,737 kWh
JS310P
10,401 kWh
Lifetime gap
336 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
JS320P
JS310P
Standard test conditions
25 °C
100.0% of rated power
320 W
310 W
Cool, bright day
40 °C
93.7% of rated power
300 W
290 W
Typical summer roof
55 °C
87.4% of rated power
280 W
271 W
Hot roof
70 °C
81.1% of rated power
260 W
251 W
03
Full specification
Parameter
JS320P
JS310P
Difference
Power and efficiency
Rated power
320 Wp
310 Wp
+10 W for JS320P
Module efficiency
16.40 %
15.90 %
+0.50 pp for JS320P
Power density
164.9 Wp/m²
159.8 Wp/m²
+5.2 Wp/m² for JS320P
Open-circuit voltage
45.91 V
45.31 V
Effectively the same
Voltage at max power
37.17 V
36.70 V
Effectively the same
Short-circuit current
9.12 A
9.00 A
Effectively the same
Current at max power
8.61 A
8.45 A
Effectively the same
Temperature
Temperature coefficient
-0.420 %/°C
-0.420 %/°C
Same
Mechanical
Dimensions
1956x992x40 mm
1956x992x40 mm
Same
Module area
1.940 m²
1.940 m²
Same
Weight
23.5 kg
23.5 kg
Same
Weight per kWp
73.4 kg/kWp
75.8 kg/kWp
-2.4 kg/kWp for JS320P
Warranty and degradation
Product warranty
10 yrs
10 yrs
Same
Performance warranty
25 yrs
25 yrs
Same
Annual degradation
-
-
Neither datasheet publishes this
Technology
Cell technology
PERC
PERC
Same
Cell type
Polycrystalline
Polycrystalline
Same
Cell count
72
72
Same
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#13,584
vs
#13,662
JS320P leads by 78 places
Power density
#13,557
vs
#13,641
JS320P leads by 84 places
Heat behaviour
#13,796
vs
#13,796
Tied - the same position in the database
Weight
#13,558
vs
#13,628
JS320P leads by 70 places
Warranty
#9,798
vs
#9,798
Tied - the same position in the database
Overall
#13,533
vs
#13,616
JS320P leads by 83 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Jinko Solar JS320P or Jinko Solar JS310P?
According to our database: Jinko Solar JS320P has higher module efficiency (16.40% vs 15.90%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jinko Solar JS320P and Jinko Solar JS310P?
Jinko Solar JS320P has a module efficiency of 16.40%, while Jinko Solar JS310P is 15.90%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jinko Solar JS320P use vs Jinko Solar JS310P?
Jinko Solar JS320P uses PERC cells; Jinko Solar JS310P uses PERC. 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 Jinko Solar JS320P and Jinko Solar JS310P?
Jinko Solar JS320P has a 25 years power warranty; Jinko Solar JS310P has a 25 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.
Shop prices: See 171 Jinko Solar 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.