Sunpro Power SPDG440-N108M10 vs Sunpro Power SPDG595-N144M10
VS
The verdict
SPDG595-N144M10 leads on the differences that matter
The largest is rated power: 155 W more power. 9 of 19 comparable parameters are identical.
See all 10 differencesHow alike are they
9
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
10 of 19 parameters
What actually differs
Parameter
SPDG440-N108M10
SPDG595-N144M10
Difference
Rated power
440 Wp
595 Wp
155 W more power
Module efficiency
22.53 %
23.02 %
0.49 pp more efficient
Weight
23.3 kg
31.0 kg
7.7 kg lighter
Open-circuit voltage
38.53 V
51.84 V
13.31 V apart
Module area
1.953 m²
2.583 m²
0.631 m² apart
Power density
225.3 Wp/m²
230.3 Wp/m²
5.0 Wp/m² higher
Voltage at max power
32.09 V
43.03 V
10.94 V apart
Cell count
108
144
36 cells apart
Bifacial
No
Yes
No vs Yes
Dimensions
1722x1134x30 mm
2278x1134x30 mm
1722x1134x30 mm vs 2278x1134x30 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 (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
SPDG440-N108M10
14,763 kWh
SPDG595-N144M10
19,963 kWh
Lifetime gap
5,200 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
SPDG440-N108M10
SPDG595-N144M10
Standard test conditions
25 °C
100.0% of rated power
440 W
595 W
Cool, bright day
40 °C
95.5% of rated power
420 W
568 W
Typical summer roof
55 °C
91.0% of rated power
400 W
541 W
Hot roof
70 °C
86.5% of rated power
381 W
515 W
03
Full specification
Parameter
SPDG440-N108M10
SPDG595-N144M10
Difference
Power and efficiency
Rated power
440 Wp
595 Wp
+155 W for SPDG595-N144M10
Module efficiency
22.53 %
23.02 %
+0.49 pp for SPDG595-N144M10
Power density
225.3 Wp/m²
230.3 Wp/m²
+5.0 Wp/m² for SPDG595-N144M10
Open-circuit voltage
38.53 V
51.84 V
13.31 V apart
Voltage at max power
32.09 V
43.03 V
10.94 V apart
Short-circuit current
14.43 A
14.55 A
Effectively the same
Current at max power
13.72 A
13.83 A
Effectively the same
Temperature
Temperature coefficient
-0.300 %/°C
-0.300 %/°C
Same
Mechanical
Dimensions
1722x1134x30 mm
2278x1134x30 mm
1722x1134x30 mm vs 2278x1134x30 mm
Module area
1.953 m²
2.583 m²
0.631 m² apart
Weight
23.3 kg
31.0 kg
-7.7 kg for SPDG440-N108M10
Weight per kWp
53.0 kg/kWp
52.1 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
25 yrs
25 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
108
144
36 cells apart
Bifacial
No
Yes
No vs Yes
04
14,129 panels
Against the whole database
Efficiency
#4,041
vs
#1,847
SPDG595-N144M10 leads by 2,194 places
Power density
#4,158
vs
#1,809
SPDG595-N144M10 leads by 2,349 places
Heat behaviour
#6,152
vs
#6,152
Tied - the same position in the database
Weight
#6,737
vs
#5,590
SPDG595-N144M10 leads by 1,147 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#6,586
vs
#1,427
SPDG595-N144M10 leads by 5,159 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: Sunpro Power SPDG440-N108M10 or Sunpro Power SPDG595-N144M10?
According to our database: Sunpro Power SPDG595-N144M10 has higher module efficiency (23.02% vs 22.53%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Sunpro Power SPDG440-N108M10 and Sunpro Power SPDG595-N144M10?
Sunpro Power SPDG440-N108M10 has a module efficiency of 22.53%, while Sunpro Power SPDG595-N144M10 is 23.02%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Sunpro Power SPDG440-N108M10 use vs Sunpro Power SPDG595-N144M10?
Sunpro Power SPDG440-N108M10 uses TOPCon cells; Sunpro Power SPDG595-N144M10 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 Sunpro Power SPDG440-N108M10 and Sunpro Power SPDG595-N144M10?
Sunpro Power SPDG440-N108M10 has a 30 years power warranty; Sunpro Power SPDG595-N144M10 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 Sunpro Power SPDG440-N108M10 and Sunpro Power SPDG595-N144M10 bifacial panels?
Sunpro Power SPDG595-N144M10 is bifacial (captures light from both faces); Sunpro Power SPDG440-N108M10 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
Shop prices: See 12 Sunpro Power 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.