Sunpro Power SPDG585-N144M10 vs Sunpro Power SPDG590-N144M10
VS
The verdict
One difference, none of them an advantage
The largest is bifacial: No vs Yes. 18 of 19 comparable parameters are identical.
See the one differenceHow alike are they
18
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
1 of 19 parameters
What actually differs
Parameter
SPDG585-N144M10
SPDG590-N144M10
Difference
Bifacial
No
Yes
No vs Yes
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.
SPDG585-N144M10
19,628 kWh
SPDG590-N144M10
19,796 kWh
Lifetime gap
168 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
SPDG585-N144M10
SPDG590-N144M10
Standard test conditions
25 °C
100.0% of rated power
585 W
590 W
Cool, bright day
40 °C
95.5% of rated power
559 W
563 W
Typical summer roof
55 °C
91.0% of rated power
532 W
537 W
Hot roof
70 °C
86.5% of rated power
506 W
510 W
03
Full specification
Parameter
SPDG585-N144M10
SPDG590-N144M10
Difference
Power and efficiency
Rated power
585 Wp
590 Wp
Effectively the same
Module efficiency
22.64 %
22.83 %
Effectively the same
Power density
226.5 Wp/m²
228.4 Wp/m²
Effectively the same
Open-circuit voltage
51.58 V
51.70 V
Effectively the same
Voltage at max power
42.72 V
42.87 V
Effectively the same
Short-circuit current
14.41 A
14.48 A
Effectively the same
Current at max power
13.70 A
13.77 A
Effectively the same
Temperature
Temperature coefficient
-0.300 %/°C
-0.300 %/°C
Same
Mechanical
Dimensions
2278x1134x30 mm
2278x1134x30 mm
Same
Module area
2.583 m²
2.583 m²
Same
Weight
31.0 kg
31.0 kg
Same
Weight per kWp
53.0 kg/kWp
52.5 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
144
144
Same
Bifacial
No
Yes
No vs Yes
04
14,129 panels
Against the whole database
Efficiency
#3,657
vs
#2,738
SPDG590-N144M10 leads by 919 places
Power density
#3,557
vs
#2,653
SPDG590-N144M10 leads by 904 places
Heat behaviour
#6,152
vs
#6,152
Tied - the same position in the database
Weight
#6,755
vs
#6,201
SPDG590-N144M10 leads by 554 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1,799
vs
#1,588
SPDG590-N144M10 leads by 211 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 SPDG585-N144M10 or Sunpro Power SPDG590-N144M10?
According to our database: Sunpro Power SPDG590-N144M10 has higher module efficiency (22.83% vs 22.64%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Sunpro Power SPDG585-N144M10 and Sunpro Power SPDG590-N144M10?
Sunpro Power SPDG585-N144M10 has a module efficiency of 22.64%, while Sunpro Power SPDG590-N144M10 is 22.83%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Sunpro Power SPDG585-N144M10 use vs Sunpro Power SPDG590-N144M10?
Sunpro Power SPDG585-N144M10 uses TOPCon cells; Sunpro Power SPDG590-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 SPDG585-N144M10 and Sunpro Power SPDG590-N144M10?
Sunpro Power SPDG585-N144M10 has a 30 years power warranty; Sunpro Power SPDG590-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 SPDG585-N144M10 and Sunpro Power SPDG590-N144M10 bifacial panels?
Sunpro Power SPDG590-N144M10 is bifacial (captures light from both faces); Sunpro Power SPDG585-N144M10 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.