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Fronius Verto 20.0 vs SG20RT-20 9 of 20 identical Swap Change inverters

Fronius Verto 20.0 vs Sungrow SG20RT-20

Fronius Verto 20.0
Fronius International
Fronius Verto 20.0
20 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Sungrow SG20RT-20
Sungrow
SG20RT-20
20 kW 98.2 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

11 differences, and they point both ways

The largest is max dc voltage: 100 V apart. 9 of 20 comparable parameters are identical, with 12 more left out because at least one datasheet does not publish them.

See all 11 differences
How alike are they
9 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

11 of 20 parameters
Parameter Fronius Verto 20.0 SG20RT-20 Difference
Max DC voltage 1000 V 1100 V 100 V apart
Max input current per tracker 28.0 A 25.0 A 3.0 A more headroom
MPP trackers 4 2 2 trackers more
Weight 35.2 kg 20.0 kg 15.2 kg lighter
Weight per kW 1.8 kg/kW 1.0 kg/kW 0.8 kg/kW lighter
Max AC current 30.3 A 31.9 A 1.6 A apart
Start voltage 150 V 180 V 30 V earlier start
Ingress protection IP66 IP65 IP66 vs IP65
MPPT voltage range 150-870 V 160-1000 V 150-870 V vs 160-1000 V
Strings per tracker 2 1 1 string apart
Dimensions 730x540x278 mm 480x370x195 mm 730x540x278 mm vs 480x370x195 mm
02

Full specification

Parameter Fronius Verto 20.0 SG20RT-20 Difference
AC output
Rated AC power 20.00 kW 20.00 kW Same
Max AC power 20.00 kW 20.00 kW Same
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 30.3 A 31.9 A 1.6 A apart
PV input
Max PV power 30.00 kW - Not published by Sungrow
DC/AC ratio 1.50 - Not published by Sungrow
Max DC voltage 1000 V 1100 V 100 V apart
MPPT voltage range 150-870 V 160-1000 V 150-870 V vs 160-1000 V
Start voltage 150 V 180 V -30 V for Fronius Verto 20.0
MPP trackers 4 2 +2 trackers for Fronius Verto 20.0
Strings per tracker 2 1 1 string apart
Max input current per tracker 28.0 A 25.0 A +3.0 A for Fronius Verto 20.0
Efficiency
European efficiency 98.3 % 98.2 % Effectively the same
Max efficiency 98.6 % 98.6 % Same
CEC efficiency - - Neither datasheet publishes this
Battery
Battery input - - Neither datasheet publishes this
Battery voltage - - Neither datasheet publishes this
Max charge current - - Neither datasheet publishes this
Backup power - - Neither datasheet publishes this
Physical
Weight 35.2 kg 20.0 kg -15.2 kg for SG20RT-20
Weight per kW 1.8 kg/kW 1.0 kg/kW -0.8 kg/kW for SG20RT-20
Dimensions 730x540x278 mm 480x370x195 mm 730x540x278 mm vs 480x370x195 mm
Ingress protection IP66 IP65 IP66 vs IP65
Cooling forced-air forced-air Same
Noise 56 dB - Not published by Sungrow
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes - Not published by Sungrow
Ethernet Yes - Not published by Sungrow
Arc fault protection Yes - Not published by Sungrow
Integrated DC switch Yes Yes Same
Warranty
Warranty - - Neither datasheet publishes this
03

More useful comparisons

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Fronius Verto 20.0 vs Sungrow SG20KTL-M
10 differences, the largest is max dc voltage
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Fronius Verto 20.0 vs Huawei SUN2000-20KTL-M2
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04

Written summary

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.