Solaria Solaria PowerX-395R vs Solaria Solaria PowerX-390R
VS
The verdict
395R leads on the differences that matter
The largest is module efficiency: 0.20 pp more efficient. 16 of 17 comparable parameters are identical, with 2 more left out because at least one datasheet does not publish them.
See the one differenceHow alike are they
16
of 17 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
1 of 17 parameters
What actually differs
Parameter
395R
390R
Difference
Module efficiency
20.20 %
20.00 %
0.20 pp more efficient
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 (-0.360 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
395R
12,905 kWh
390R
12,741 kWh
Lifetime gap
164 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
395R
390R
Standard test conditions
25 °C
100.0% of rated power
395 W
390 W
Cool, bright day
40 °C
94.6% of rated power
374 W
369 W
Typical summer roof
55 °C
89.2% of rated power
352 W
348 W
Hot roof
70 °C
83.8% of rated power
331 W
327 W
03
Full specification
Parameter
395R
390R
Difference
Power and efficiency
Rated power
395 Wp
390 Wp
Effectively the same
Module efficiency
20.20 %
20.00 %
+0.20 pp for 395R
Power density
202.2 Wp/m²
199.6 Wp/m²
Effectively the same
Open-circuit voltage
37.10 V
36.90 V
Effectively the same
Voltage at max power
30.80 V
30.60 V
Effectively the same
Short-circuit current
13.60 A
13.52 A
Effectively the same
Current at max power
12.82 A
12.73 A
Effectively the same
Temperature
Temperature coefficient
-0.360 %/°C
-0.360 %/°C
Same
Mechanical
Dimensions
1723x1134x35 mm
1723x1134x35 mm
Same
Module area
1.954 m²
1.954 m²
Same
Weight
22.1 kg
22.1 kg
Same
Weight per kWp
55.9 kg/kWp
56.7 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
25 yrs
25 yrs
Same
Performance warranty
25 yrs
25 yrs
Same
Annual degradation
0.50 %/yr
0.50 %/yr
Same
Technology
Cell technology
-
-
Neither datasheet publishes this
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
-
-
Neither datasheet publishes this
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#11,956
vs
#12,214
395R leads by 258 places
Power density
#11,961
vs
#12,284
395R leads by 323 places
Heat behaviour
#12,345
vs
#12,345
Tied - the same position in the database
Weight
#10,283
vs
#10,801
395R leads by 518 places
Warranty
#9,798
vs
#9,798
Tied - the same position in the database
Overall
#10,998
vs
#11,244
395R leads by 246 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: Solaria Solaria PowerX-395R or Solaria Solaria PowerX-390R?
According to our database: Solaria Solaria PowerX-395R has higher module efficiency (20.20% vs 20.00%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Solaria Solaria PowerX-395R and Solaria Solaria PowerX-390R?
Solaria Solaria PowerX-395R has a module efficiency of 20.20%, while Solaria Solaria PowerX-390R is 20.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Solaria Solaria PowerX-395R use vs Solaria Solaria PowerX-390R?
Solaria Solaria PowerX-395R uses Monocrystalline cells; Solaria Solaria PowerX-390R uses Monocrystalline. 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 Solaria Solaria PowerX-395R and Solaria Solaria PowerX-390R?
Solaria Solaria PowerX-395R has a 25 years power warranty; Solaria Solaria PowerX-390R 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 1 Solaria offer
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.