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SPDG440-N108M10 vs SPDG585-N144M10 12 of 19 identical Swap Change panels

Sunpro Power SPDG440-N108M10 vs Sunpro Power SPDG585-N144M10

Sunpro Power SPDG440-N108M10
Sunpro Power
SPDG440-N108M10
440 Wp 22.53 % TOPCon
Open panel page Datasheet PDF
VS
Sunpro Power SPDG585-N144M10
Sunpro Power
SPDG585-N144M10
585 Wp 22.64 % TOPCon
Open panel page Datasheet PDF
The verdict

7 differences, and they point both ways

The largest is rated power: 145 W more power. 12 of 19 comparable parameters are identical.

See all 7 differences
How alike are they
12 of 19 comparable
parameters are identical
identical differs
01

What actually differs

7 of 19 parameters
Parameter SPDG440-N108M10 SPDG585-N144M10 Difference
Rated power 440 Wp 585 Wp 145 W more power
Weight 23.3 kg 31.0 kg 7.7 kg lighter
Open-circuit voltage 38.53 V 51.58 V 13.05 V apart
Module area 1.953 m² 2.583 m² 0.631 m² apart
Voltage at max power 32.09 V 42.72 V 10.63 V apart
Cell count 108 144 36 cells apart
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
SPDG585-N144M10
19,628 kWh
Lifetime gap
4,865 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario SPDG440-N108M10 SPDG585-N144M10
Standard test conditions 25 °C 100.0% of rated power 440 W 585 W
Cool, bright day 40 °C 95.5% of rated power 420 W 559 W
Typical summer roof 55 °C 91.0% of rated power 400 W 532 W
Hot roof 70 °C 86.5% of rated power 381 W 506 W
03

Full specification

Parameter SPDG440-N108M10 SPDG585-N144M10 Difference
Power and efficiency
Rated power 440 Wp 585 Wp +145 W for SPDG585-N144M10
Module efficiency 22.53 % 22.64 % Effectively the same
Power density 225.3 Wp/m² 226.5 Wp/m² Effectively the same
Open-circuit voltage 38.53 V 51.58 V 13.05 V apart
Voltage at max power 32.09 V 42.72 V 10.63 V apart
Short-circuit current 14.43 A 14.41 A Effectively the same
Current at max power 13.72 A 13.70 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 53.0 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 108 144 36 cells apart
Bifacial No No Same
04

Against the whole database

14,129 panels
Efficiency
#4,041 vs #3,657
SPDG585-N144M10 leads by 384 places
Power density
#4,158 vs #3,557
SPDG585-N144M10 leads by 601 places
Heat behaviour
#6,152 vs #6,152
Tied - the same position in the database
Weight
#6,737 vs #6,755
SPDG440-N108M10 leads by 18 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,586 vs #1,799
SPDG585-N144M10 leads by 4,787 places
05

More useful comparisons

Open the full database
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06

Written summary

07

Questions about this pairing

Which panel is better: Sunpro Power SPDG440-N108M10 or Sunpro Power SPDG585-N144M10?
According to our database: Sunpro Power SPDG585-N144M10 has higher module efficiency (22.64% 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 SPDG585-N144M10?
Sunpro Power SPDG440-N108M10 has a module efficiency of 22.53%, while Sunpro Power SPDG585-N144M10 is 22.64%. 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 SPDG585-N144M10?
Sunpro Power SPDG440-N108M10 uses TOPCon cells; Sunpro Power SPDG585-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 SPDG585-N144M10?
Sunpro Power SPDG440-N108M10 has a 30 years power warranty; Sunpro Power SPDG585-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.

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.