Solaria Solaria PowerX-400R vs Solaria Solaria PowerXT-400R-PM
VS
The verdict
PowerXT-400R-PM leads on the differences that matter
The largest is performance warranty: 5 yrs longer. 5 of 17 comparable parameters are identical, with 2 more left out because at least one datasheet does not publish them.
See all 12 differencesHow alike are they
5
of 17 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
12 of 17 parameters
What actually differs
Parameter
PowerX-400R
PowerXT-400R-PM
Difference
Performance warranty
25 yrs
30 yrs
5 yrs longer
Temperature coefficient
-0.360 %/°C
-0.390 %/°C
0.030 %/°C better in heat
Product warranty
25 yrs
30 yrs
5 yrs longer
Open-circuit voltage
37.30 V
51.10 V
13.80 V apart
Short-circuit current
13.68 A
9.82 A
3.86 A apart
Module efficiency
20.50 %
20.20 %
0.30 pp more efficient
Weight per kWp
55.2 kg/kWp
52.5 kg/kWp
2.8 kg/kWp lighter
Voltage at max power
31.00 V
42.40 V
11.40 V apart
Current at max power
12.90 A
9.41 A
3.49 A apart
Weight
22.1 kg
21.0 kg
1.1 kg lighter
Module area
1.954 m²
1.979 m²
0.025 m² apart
Dimensions
1723x1134x35 mm
1644x1204x40 mm
1723x1134x35 mm vs 1644x1204x40 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
PowerX-400R
13,068 kWh
PowerXT-400R-PM
13,110 kWh
Lifetime gap
42 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
PowerX-400R
PowerXT-400R-PM
Standard test conditions
25 °C
100.0% of rated power
400 W
400 W
Cool, bright day
40 °C
94.2% of rated power
378 W
377 W
Typical summer roof
55 °C
88.3% of rated power
357 W
353 W
Hot roof
70 °C
82.5% of rated power
335 W
330 W
03
Full specification
Parameter
PowerX-400R
PowerXT-400R-PM
Difference
Power and efficiency
Rated power
400 Wp
400 Wp
Same
Module efficiency
20.50 %
20.20 %
+0.30 pp for PowerX-400R
Power density
204.7 Wp/m²
202.1 Wp/m²
Effectively the same
Open-circuit voltage
37.30 V
51.10 V
13.80 V apart
Voltage at max power
31.00 V
42.40 V
11.40 V apart
Short-circuit current
13.68 A
9.82 A
3.86 A apart
Current at max power
12.90 A
9.41 A
3.49 A apart
Temperature
Temperature coefficient
-0.360 %/°C
-0.390 %/°C
+0.030 %/°C for PowerX-400R
Mechanical
Dimensions
1723x1134x35 mm
1644x1204x40 mm
1723x1134x35 mm vs 1644x1204x40 mm
Module area
1.954 m²
1.979 m²
0.025 m² apart
Weight
22.1 kg
21.0 kg
-1.1 kg for PowerXT-400R-PM
Weight per kWp
55.2 kg/kWp
52.5 kg/kWp
-2.8 kg/kWp for PowerXT-400R-PM
Warranty and degradation
Product warranty
25 yrs
30 yrs
+5 yrs for PowerXT-400R-PM
Performance warranty
25 yrs
30 yrs
+5 yrs for PowerXT-400R-PM
Annual degradation
0.50 %/yr
0.48 %/yr
Effectively the 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
#11,308
vs
#11,956
PowerX-400R leads by 648 places
Power density
#11,499
vs
#11,987
PowerX-400R leads by 488 places
Heat behaviour
#12,345
vs
#13,579
PowerX-400R leads by 1,234 places
Weight
#9,691
vs
#6,043
PowerXT-400R-PM leads by 3,648 places
Warranty
#9,798
vs
#21
PowerXT-400R-PM leads by 9,777 places
Overall
#10,732
vs
#9,549
PowerXT-400R-PM leads by 1,183 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-400R or Solaria Solaria PowerXT-400R-PM?
According to our database: Solaria Solaria PowerX-400R has higher module efficiency (20.50% vs 20.20%); Solaria Solaria PowerX-400R tolerates heat better (temp coeff -0.360%/°C vs -0.390%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Solaria Solaria PowerX-400R and Solaria Solaria PowerXT-400R-PM?
Solaria Solaria PowerX-400R has a module efficiency of 20.50%, while Solaria Solaria PowerXT-400R-PM is 20.20%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Solaria Solaria PowerX-400R use vs Solaria Solaria PowerXT-400R-PM?
Solaria Solaria PowerX-400R uses Monocrystalline cells; Solaria Solaria PowerXT-400R-PM 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-400R and Solaria Solaria PowerXT-400R-PM?
Solaria Solaria PowerX-400R has a 25 years power warranty; Solaria Solaria PowerXT-400R-PM 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.
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.