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SPV550-PM10-144 vs SPV540-PM10-144 15 of 19 identical Swap Change panels

SpolarPV SPV550-PM10-144 vs SpolarPV SPV540-PM10-144

SpolarPV SPV550-PM10-144
SpolarPV
SPV550-PM10-144
550 Wp 21.31 % PERC
Open panel page Datasheet PDF
VS
SpolarPV SPV540-PM10-144
SpolarPV
SPV540-PM10-144
540 Wp 20.92 % PERC
Open panel page Datasheet PDF
The verdict

SPV550-PM10-144 leads on the differences that matter

The largest is module efficiency: 0.39 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 SPV550-PM10-144 SPV540-PM10-144 Difference
Module efficiency 21.31 % 20.92 % 0.39 pp more efficient
Power density 213.1 Wp/m² 209.2 Wp/m² 3.9 Wp/m² higher
Rated power 550 Wp 540 Wp 10 W more power
Open-circuit voltage 51.44 V 49.90 V 1.54 V apart
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 (-0.350 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
SPV550-PM10-144
18,112 kWh
SPV540-PM10-144
17,783 kWh
Lifetime gap
329 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario SPV550-PM10-144 SPV540-PM10-144
Standard test conditions 25 °C 100.0% of rated power 550 W 540 W
Cool, bright day 40 °C 94.8% of rated power 521 W 512 W
Typical summer roof 55 °C 89.5% of rated power 492 W 483 W
Hot roof 70 °C 84.2% of rated power 463 W 455 W
03

Full specification

Parameter SPV550-PM10-144 SPV540-PM10-144 Difference
Power and efficiency
Rated power 550 Wp 540 Wp +10 W for SPV550-PM10-144
Module efficiency 21.31 % 20.92 % +0.39 pp for SPV550-PM10-144
Power density 213.1 Wp/m² 209.2 Wp/m² +3.9 Wp/m² for SPV550-PM10-144
Open-circuit voltage 51.44 V 49.90 V 1.54 V apart
Voltage at max power 42.57 V 42.14 V Effectively the same
Short-circuit current 13.67 A 13.57 A Effectively the same
Current at max power 12.93 A 12.82 A Effectively the same
Temperature
Temperature coefficient -0.350 %/°C -0.350 %/°C Same
Mechanical
Dimensions 2278x1133x30 mm 2278x1133x30 mm Same
Module area 2.581 m² 2.581 m² Same
Weight 26.5 kg 26.5 kg Same
Weight per kWp 48.2 kg/kWp 49.1 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.45 %/yr 0.45 %/yr Same
Technology
Cell technology PERC PERC Same
Cell type Monocrystalline Monocrystalline Same
Cell count 144 144 Same
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#8,503 vs #10,014
SPV550-PM10-144 leads by 1,511 places
Power density
#8,474 vs #10,065
SPV550-PM10-144 leads by 1,591 places
Heat behaviour
#10,419 vs #10,419
Tied - the same position in the database
Weight
#2,087 vs #2,710
SPV550-PM10-144 leads by 623 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,830 vs #7,692
SPV550-PM10-144 leads by 862 places
05

More useful comparisons

Open the full database
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SpolarPV SPV550-PM10-144 vs SpolarPV SPV560-PM10-144
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SpolarPV SPV550-PM10-144 vs SpolarPV SPV555-PM10-144
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SpolarPV SPV550-PM10-144 vs SpolarPV SPV695-TG12-132BD
15 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: SpolarPV SPV550-PM10-144 or SpolarPV SPV540-PM10-144?
According to our database: SpolarPV SPV550-PM10-144 has higher module efficiency (21.31% vs 20.92%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of SpolarPV SPV550-PM10-144 and SpolarPV SPV540-PM10-144?
SpolarPV SPV550-PM10-144 has a module efficiency of 21.31%, while SpolarPV SPV540-PM10-144 is 20.92%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does SpolarPV SPV550-PM10-144 use vs SpolarPV SPV540-PM10-144?
SpolarPV SPV550-PM10-144 uses PERC cells; SpolarPV SPV540-PM10-144 uses PERC. 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 SpolarPV SPV550-PM10-144 and SpolarPV SPV540-PM10-144?
SpolarPV SPV550-PM10-144 has a 30 years power warranty; SpolarPV SPV540-PM10-144 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.

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.