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SPDG500-N120M10 vs SPDG485-N120M10 15 of 19 identical Swap Change panels

Sunpro Power SPDG500-N120M10 vs Sunpro Power SPDG485-N120M10

Sunpro Power SPDG500-N120M10
Sunpro Power
SPDG500-N120M10
500 Wp 23.08 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Sunpro Power SPDG485-N120M10
Sunpro Power
SPDG485-N120M10
485 Wp 22.39 % TOPCon
Open panel page Datasheet PDF
The verdict

SPDG500-N120M10 leads on the differences that matter

The largest is module efficiency: 0.69 pp more efficient. 15 of 19 comparable parameters are identical.

See all 4 differences
How alike are they
15 of 19 comparable
parameters are identical
identical differs
01

What actually differs

4 of 19 parameters
Parameter SPDG500-N120M10 SPDG485-N120M10 Difference
Module efficiency 23.08 % 22.39 % 0.69 pp more efficient
Power density 230.8 Wp/m² 223.9 Wp/m² 6.9 Wp/m² higher
Rated power 500 Wp 485 Wp 15 W more power
Bifacial Yes No Yes vs No
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.
SPDG500-N120M10
16,776 kWh
SPDG485-N120M10
16,273 kWh
Lifetime gap
503 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario SPDG500-N120M10 SPDG485-N120M10
Standard test conditions 25 °C 100.0% of rated power 500 W 485 W
Cool, bright day 40 °C 95.5% of rated power 478 W 463 W
Typical summer roof 55 °C 91.0% of rated power 455 W 441 W
Hot roof 70 °C 86.5% of rated power 433 W 420 W
03

Full specification

Parameter SPDG500-N120M10 SPDG485-N120M10 Difference
Power and efficiency
Rated power 500 Wp 485 Wp +15 W for SPDG500-N120M10
Module efficiency 23.08 % 22.39 % +0.69 pp for SPDG500-N120M10
Power density 230.8 Wp/m² 223.9 Wp/m² +6.9 Wp/m² for SPDG500-N120M10
Open-circuit voltage 43.36 V 42.94 V Effectively the same
Voltage at max power 35.94 V 35.52 V Effectively the same
Short-circuit current 14.65 A 14.38 A Effectively the same
Current at max power 13.92 A 13.66 A Effectively the same
Temperature
Temperature coefficient -0.300 %/°C -0.300 %/°C Same
Mechanical
Dimensions 1910x1134x35 mm 1910x1134x35 mm Same
Module area 2.166 m² 2.166 m² Same
Weight 26.0 kg 26.0 kg Same
Weight per kWp 52.0 kg/kWp 53.6 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 120 120 Same
Bifacial Yes No Yes vs No
04

Against the whole database

14,129 panels
Efficiency
#1,727 vs #5,020
SPDG500-N120M10 leads by 3,293 places
Power density
#1,694 vs #4,920
SPDG500-N120M10 leads by 3,226 places
Heat behaviour
#6,152 vs #6,152
Tied - the same position in the database
Weight
#5,449 vs #7,689
SPDG500-N120M10 leads by 2,240 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,908 vs #5,230
SPDG500-N120M10 leads by 1,322 places
05

More useful comparisons

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06

Written summary

07

Questions about this pairing

Which panel is better: Sunpro Power SPDG500-N120M10 or Sunpro Power SPDG485-N120M10?
According to our database: Sunpro Power SPDG500-N120M10 has higher module efficiency (23.08% vs 22.39%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Sunpro Power SPDG500-N120M10 and Sunpro Power SPDG485-N120M10?
Sunpro Power SPDG500-N120M10 has a module efficiency of 23.08%, while Sunpro Power SPDG485-N120M10 is 22.39%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Sunpro Power SPDG500-N120M10 use vs Sunpro Power SPDG485-N120M10?
Sunpro Power SPDG500-N120M10 uses TOPCon cells; Sunpro Power SPDG485-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 SPDG500-N120M10 and Sunpro Power SPDG485-N120M10?
Sunpro Power SPDG500-N120M10 has a 30 years power warranty; Sunpro Power SPDG485-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 SPDG500-N120M10 and Sunpro Power SPDG485-N120M10 bifacial panels?
Sunpro Power SPDG500-N120M10 is bifacial (captures light from both faces); Sunpro Power SPDG485-N120M10 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.