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530 XM vs 520 XM 15 of 19 identical Swap Change panels

Silfab SIL-530 XM vs Silfab SIL-520 XM

Silfab SIL-530 XM
Silfab
SIL-530 XM
530 Wp 22.30 % N-type Bifacial
Open panel page Datasheet PDF
VS
Silfab
SIL-520 XM
520 Wp 21.90 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

530 XM leads on the differences that matter

The largest is module efficiency: 0.40 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 530 XM 520 XM Difference
Module efficiency 22.30 % 21.90 % 0.40 pp more efficient
Power density 223.0 Wp/m² 218.8 Wp/m² 4.2 Wp/m² higher
Cell technology N-type TOPCon N-type vs TOPCon
Rated power 530 Wp 520 Wp 10 W more power
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 (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
530 XM
17,785 kWh
520 XM
17,531 kWh
Lifetime gap
254 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 530 XM 520 XM
Standard test conditions 25 °C 100.0% of rated power 530 W 520 W
Cool, bright day 40 °C 95.7% of rated power 507 W 497 W
Typical summer roof 55 °C 91.3% of rated power 484 W 475 W
Hot roof 70 °C 87.0% of rated power 461 W 452 W
03

Full specification

Parameter 530 XM 520 XM Difference
Power and efficiency
Rated power 530 Wp 520 Wp +10 W for 530 XM
Module efficiency 22.30 % 21.90 % +0.40 pp for 530 XM
Power density 223.0 Wp/m² 218.8 Wp/m² +4.2 Wp/m² for 530 XM
Open-circuit voltage 47.74 V 47.52 V Effectively the same
Voltage at max power 41.05 V 40.48 V Effectively the same
Short-circuit current 13.71 A 13.65 A Effectively the same
Current at max power 12.91 A 12.85 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2098x1133x35 mm 2098x1133x35 mm Same
Module area 2.377 m² 2.377 m² Same
Weight 26.2 kg 26.2 kg Same
Weight per kWp 49.4 kg/kWp 50.4 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 25 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.33 %/yr 0.30 %/yr Effectively the same
Technology
Cell technology N-type TOPCon N-type vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#5,161 vs #6,847
530 XM leads by 1,686 places
Power density
#5,156 vs #6,900
530 XM leads by 1,744 places
Heat behaviour
#2,220 vs #2,220
Tied - the same position in the database
Weight
#2,964 vs #3,778
530 XM leads by 814 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,730 vs #4,542
530 XM leads by 812 places
05

More useful comparisons

Open the full database
Same series, other bin
Silfab
Silfab SIL-530 XM vs Silfab SIL-590 XM+
9 differences, the largest is rated power
Same series, other bin
Silfab
Silfab SIL-530 XM vs Silfab SIL-580-XM+-BIFACIAL
7 differences, the largest is rated power
Same series, other bin
Silfab
Silfab SIL-530 XM vs Silfab SIL-570 XM+ BIFACIAL
8 differences, the largest is rated power
Same series, other bin
Silfab
Silfab SIL-530 XM vs Silfab SIL-570 XM+
8 differences, the largest is rated power
Same series, other bin
Silfab
Silfab SIL-530 XM vs Silfab SIL-520 QM
4 differences, the largest is module efficiency
Same manufacturer
Silfab
Silfab SIL-530 XM vs Silfab SIL-640 XL
10 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Silfab SIL-530 XM or Silfab SIL-520 XM?
According to our database: Silfab SIL-530 XM has higher module efficiency (22.30% vs 21.90%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Silfab SIL-530 XM and Silfab SIL-520 XM?
Silfab SIL-530 XM has a module efficiency of 22.30%, while Silfab SIL-520 XM is 21.90%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Silfab SIL-530 XM use vs Silfab SIL-520 XM?
Silfab SIL-530 XM uses N-type cells; Silfab SIL-520 XM 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 Silfab SIL-530 XM and Silfab SIL-520 XM?
Silfab SIL-530 XM has a 30 years power warranty; Silfab SIL-520 XM 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 Silfab SIL-530 XM and Silfab SIL-520 XM bifacial panels?
Both Silfab SIL-530 XM and Silfab SIL-520 XM 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.

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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.