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SUN-20K-G02 vs Fronius Verto 20.0 9 of 23 identical Swap Change inverters

Deye SUN-20K-G02 vs Fronius Verto 20.0

Deye
SUN-20K-G02
20 kW 97.8 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Fronius Verto 20.0
Fronius International
Fronius Verto 20.0
20 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

14 differences, and they point both ways

The largest is european efficiency: 0.5 pp more efficient. 9 of 23 comparable parameters are identical, with 9 more left out because at least one datasheet does not publish them.

See all 14 differences
How alike are they
9 of 23 comparable
parameters are identical
identical differs not published
01

What actually differs

14 of 23 parameters
Parameter SUN-20K-G02 Fronius Verto 20.0 Difference
European efficiency 97.8 % 98.3 % 0.5 pp more efficient
Max AC power 22.00 kW 20.00 kW 2.00 kW apart
Max PV power 26.00 kW 30.00 kW 4.00 kW apart
MPP trackers 2 4 2 trackers more
Weight 28.0 kg 35.2 kg 7.2 kg lighter
Noise 45 dB 56 dB 12 dB quieter
DC/AC ratio 1.30 1.50 0.20 more oversizing headroom
Start voltage 250 V 150 V 100 V earlier start
Max operating temperature 65 °C 60 °C 5 °C more heat tolerant
Weight per kW 1.4 kg/kW 1.8 kg/kW 0.4 kg/kW lighter
Max AC current 31.9 A 30.3 A 1.6 A apart
Ingress protection IP65 IP66 IP65 vs IP66
MPPT voltage range 200-850 V 150-870 V 200-850 V vs 150-870 V
Dimensions 520x400x240 mm 730x540x278 mm 520x400x240 mm vs 730x540x278 mm
02

Full specification

Parameter SUN-20K-G02 Fronius Verto 20.0 Difference
AC output
Rated AC power 20.00 kW 20.00 kW Same
Max AC power 22.00 kW 20.00 kW 2.00 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 31.9 A 30.3 A 1.6 A apart
PV input
Max PV power 26.00 kW 30.00 kW 4.00 kW apart
DC/AC ratio 1.30 1.50 +0.20 for Fronius Verto 20.0
Max DC voltage 1000 V 1000 V Same
MPPT voltage range 200-850 V 150-870 V 200-850 V vs 150-870 V
Start voltage 250 V 150 V -100 V for Fronius Verto 20.0
MPP trackers 2 4 +2 trackers for Fronius Verto 20.0
Strings per tracker - 2 Not published by Deye
Max input current per tracker - 28.0 A Not published by Deye
Efficiency
European efficiency 97.8 % 98.3 % +0.5 pp for Fronius Verto 20.0
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 28.0 kg 35.2 kg -7.2 kg for SUN-20K-G02
Weight per kW 1.4 kg/kW 1.8 kg/kW -0.4 kg/kW for SUN-20K-G02
Dimensions 520x400x240 mm 730x540x278 mm 520x400x240 mm vs 730x540x278 mm
Ingress protection IP65 IP66 IP65 vs IP66
Cooling forced-air forced-air Same
Noise 45 dB 56 dB -12 dB for SUN-20K-G02
Max operating temperature 65 °C 60 °C +5 °C for SUN-20K-G02
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet Yes Yes Same
Arc fault protection - Yes Not published by Deye
Integrated DC switch Yes Yes Same
Warranty
Warranty - - Neither datasheet publishes this
03

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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.