Sunpro Power SPDG590-N144M10 vs Sunpro Power SPDG495-N120M10
VS
The verdict
7 differences, and they point both ways
The largest is rated power: 95 W more power. 12 of 19 comparable parameters are identical.
See all 7 differencesHow alike are they
12
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
7 of 19 parameters
What actually differs
Parameter
SPDG590-N144M10
SPDG495-N120M10
Difference
Rated power
590 Wp
495 Wp
95 W more power
Weight
31.0 kg
26.0 kg
5.0 kg lighter
Open-circuit voltage
51.70 V
43.21 V
8.49 V apart
Module area
2.583 m²
2.166 m²
0.417 m² apart
Voltage at max power
42.87 V
35.80 V
7.07 V apart
Cell count
144
120
24 cells apart
Dimensions
2278x1134x30 mm
1910x1134x35 mm
2278x1134x30 mm vs 1910x1134x35 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.
SPDG590-N144M10
19,796 kWh
SPDG495-N120M10
16,608 kWh
Lifetime gap
3,188 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
SPDG590-N144M10
SPDG495-N120M10
Standard test conditions
25 °C
100.0% of rated power
590 W
495 W
Cool, bright day
40 °C
95.5% of rated power
563 W
473 W
Typical summer roof
55 °C
91.0% of rated power
537 W
450 W
Hot roof
70 °C
86.5% of rated power
510 W
428 W
03
Full specification
Parameter
SPDG590-N144M10
SPDG495-N120M10
Difference
Power and efficiency
Rated power
590 Wp
495 Wp
+95 W for SPDG590-N144M10
Module efficiency
22.83 %
22.85 %
Effectively the same
Power density
228.4 Wp/m²
228.5 Wp/m²
Effectively the same
Open-circuit voltage
51.70 V
43.21 V
8.49 V apart
Voltage at max power
42.87 V
35.80 V
7.07 V apart
Short-circuit current
14.48 A
14.56 A
Effectively the same
Current at max power
13.77 A
13.83 A
Effectively the same
Temperature
Temperature coefficient
-0.300 %/°C
-0.300 %/°C
Same
Mechanical
Dimensions
2278x1134x30 mm
1910x1134x35 mm
2278x1134x30 mm vs 1910x1134x35 mm
Module area
2.583 m²
2.166 m²
0.417 m² apart
Weight
31.0 kg
26.0 kg
-5.0 kg for SPDG495-N120M10
Weight per kWp
52.5 kg/kWp
52.5 kg/kWp
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
144
120
24 cells apart
Bifacial
Yes
Yes
Same
04
14,129 panels
Against the whole database
Efficiency
#2,738
vs
#2,659
SPDG495-N120M10 leads by 79 places
Power density
#2,653
vs
#2,646
SPDG495-N120M10 leads by 7 places
Heat behaviour
#6,152
vs
#6,152
Tied - the same position in the database
Weight
#6,201
vs
#6,168
SPDG495-N120M10 leads by 33 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1,588
vs
#4,349
SPDG590-N144M10 leads by 2,761 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 SPDG590-N144M10 or Sunpro Power SPDG495-N120M10?
According to our database: Sunpro Power SPDG495-N120M10 has higher module efficiency (22.85% vs 22.83%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Sunpro Power SPDG590-N144M10 and Sunpro Power SPDG495-N120M10?
Sunpro Power SPDG590-N144M10 has a module efficiency of 22.83%, while Sunpro Power SPDG495-N120M10 is 22.85%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Sunpro Power SPDG590-N144M10 use vs Sunpro Power SPDG495-N120M10?
Sunpro Power SPDG590-N144M10 uses TOPCon cells; Sunpro Power SPDG495-N120M10 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 SPDG590-N144M10 and Sunpro Power SPDG495-N120M10?
Sunpro Power SPDG590-N144M10 has a 30 years power warranty; Sunpro Power SPDG495-N120M10 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 SPDG590-N144M10 and Sunpro Power SPDG495-N120M10 bifacial panels?
Both Sunpro Power SPDG590-N144M10 and Sunpro Power SPDG495-N120M10 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.
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.