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630 XL vs 570 XM+ BIFACIAL 8 of 18 identical Swap Change panels

Silfab SIL-630 XL vs Silfab SIL-570 XM+ BIFACIAL

Silfab
SIL-630 XL
630 Wp 22.56 % N-type Bifacial
Open panel page Datasheet PDF
VS
Silfab
SIL-570 XM+ BIFACIAL
570 Wp 22.10 % N-type Bifacial Incomplete
Open panel page Datasheet PDF
The verdict

630 XL leads on the differences that matter

The largest is rated power: 60 W more power. 8 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 10 differences
How alike are they
8 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

10 of 18 parameters
Parameter 630 XL 570 XM+ BIFACIAL Difference
Rated power 630 Wp 570 Wp 60 W more power
Module efficiency 22.56 % 22.10 % 0.46 pp more efficient
Open-circuit voltage 57.49 V 52.03 V 5.46 V apart
Module area 2.793 m² 2.581 m² 0.212 m² apart
Power density 225.6 Wp/m² 220.8 Wp/m² 4.7 Wp/m² higher
Weight per kWp 46.8 kg/kWp 50.0 kg/kWp 3.2 kg/kWp lighter
Voltage at max power 48.47 V 43.74 V 4.73 V apart
Cell count 156 144 12 cells apart
Weight 29.5 kg 28.5 kg 1.0 kg lighter
Dimensions 2465x1133x35 mm 2278x1133x35 mm 2465x1133x35 mm vs 2278x1133x35 mm
02

What it means on a roof

Thirty years of production
Declared first-year losses, with 0.40% a year afterwards assumed for both panels, 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.
630 XL
20,911 kWh
570 XM+ BIFACIAL
18,919 kWh
Lifetime gap
1,992 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 630 XL 570 XM+ BIFACIAL
Standard test conditions 25 °C 100.0% of rated power 630 W 570 W
Cool, bright day 40 °C 95.7% of rated power 603 W 545 W
Typical summer roof 55 °C 91.3% of rated power 575 W 520 W
Hot roof 70 °C 87.0% of rated power 548 W 496 W
03

Full specification

Parameter 630 XL 570 XM+ BIFACIAL Difference
Power and efficiency
Rated power 630 Wp 570 Wp +60 W for 630 XL
Module efficiency 22.56 % 22.10 % +0.46 pp for 630 XL
Power density 225.6 Wp/m² 220.8 Wp/m² +4.7 Wp/m² for 630 XL
Open-circuit voltage 57.49 V 52.03 V 5.46 V apart
Voltage at max power 48.47 V 43.74 V 4.73 V apart
Short-circuit current 13.66 A 13.79 A Effectively the same
Current at max power 13.00 A 13.03 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2465x1133x35 mm 2278x1133x35 mm 2465x1133x35 mm vs 2278x1133x35 mm
Module area 2.793 m² 2.581 m² 0.212 m² apart
Weight 29.5 kg 28.5 kg -1.0 kg for 570 XM+ BIFACIAL
Weight per kWp 46.8 kg/kWp 50.0 kg/kWp -3.2 kg/kWp for 630 XL
Warranty and degradation
Product warranty 25 yrs 25 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.30 %/yr - Not published by Silfab
Technology
Cell technology N-type N-type Same
Cell type Monocrystalline Monocrystalline Same
Cell count 156 144 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#3,899 vs #6,012
630 XL leads by 2,113 places
Power density
#3,867 vs #6,015
630 XL leads by 2,148 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#1,365 vs #3,575
630 XL leads by 2,210 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#1,032 vs #2,566
630 XL leads by 1,534 places
05

More useful comparisons

Open the full database
Same series, other bin
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Silfab SIL-630 XL vs Silfab SIL-640 XL
3 differences, the largest is module efficiency
Same series, other bin
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Silfab SIL-630 XL vs Silfab SIL-620 XL
3 differences, the largest is module efficiency
Same series, other bin
Silfab
Silfab SIL-570 XM+ BIFACIAL vs Silfab SIL-570 XM+
The same specification on paper
Same manufacturer
Silfab
Silfab SIL-630 XL vs Silfab SIL-590 XM+
9 differences, the largest is rated power
Same manufacturer
Silfab
Silfab SIL-630 XL vs Silfab SIL-580-XM+-BIFACIAL
8 differences, the largest is rated power
Same manufacturer
Silfab
Silfab SIL-630 XL vs Silfab SIL-540-XM-BIFACIAL
7 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Silfab SIL-630 XL or Silfab SIL-570 XM+ BIFACIAL?
According to our database: Silfab SIL-630 XL has higher module efficiency (22.56% vs 22.10%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Silfab SIL-630 XL and Silfab SIL-570 XM+ BIFACIAL?
Silfab SIL-630 XL has a module efficiency of 22.56%, while Silfab SIL-570 XM+ BIFACIAL is 22.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Silfab SIL-630 XL use vs Silfab SIL-570 XM+ BIFACIAL?
Silfab SIL-630 XL uses N-type cells; Silfab SIL-570 XM+ BIFACIAL uses N-type. 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-630 XL and Silfab SIL-570 XM+ BIFACIAL?
Silfab SIL-630 XL has a 30 years power warranty; Silfab SIL-570 XM+ BIFACIAL 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-630 XL and Silfab SIL-570 XM+ BIFACIAL bifacial panels?
Both Silfab SIL-630 XL and Silfab SIL-570 XM+ BIFACIAL 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.