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SG20RT vs MID 20KTL3-X 16 of 22 identical Swap Change inverters

Sungrow SG20RT vs Growatt MID 20KTL3-X

Sungrow SG20RT
Sungrow
SG20RT
20 kW 98.1 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Growatt MID 20KTL3-X
Growatt
MID 20KTL3-X
20 kW 98.6 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

6 differences, and they point both ways

The largest is european efficiency: 0.5 pp more efficient. 16 of 22 comparable parameters are identical, with 10 more left out because at least one datasheet does not publish them.

See all 6 differences
How alike are they
16 of 22 comparable
parameters are identical
identical differs not published
01

What actually differs

6 of 22 parameters
Parameter SG20RT MID 20KTL3-X Difference
European efficiency 98.1 % 98.6 % 0.5 pp more efficient
Weight 21.0 kg 23.0 kg 2.0 kg lighter
Start voltage 180 V 250 V 70 V earlier start
Max efficiency 98.5 % 98.8 % 0.2 pp more efficient
MPPT voltage range 160-1000 V 200-1000 V 160-1000 V vs 200-1000 V
Dimensions 480x370x195 mm 395x525x222 mm 480x370x195 mm vs 395x525x222 mm
02

Full specification

Parameter SG20RT MID 20KTL3-X Difference
AC output
Rated AC power 20.00 kW 20.00 kW Same
Max AC power 22.00 kW 22.00 kW Same
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 31.9 A 31.9 A Same
PV input
Max PV power 30.00 kW 30.00 kW Same
DC/AC ratio 1.50 1.50 Same
Max DC voltage 1100 V 1100 V Same
MPPT voltage range 160-1000 V 200-1000 V 160-1000 V vs 200-1000 V
Start voltage 180 V 250 V -70 V for SG20RT
MPP trackers 2 2 Same
Strings per tracker 2 - Not published by Growatt
Max input current per tracker 25.0 A - Not published by Growatt
Efficiency
European efficiency 98.1 % 98.6 % +0.5 pp for MID 20KTL3-X
Max efficiency 98.5 % 98.8 % +0.2 pp for MID 20KTL3-X
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 21.0 kg 23.0 kg -2.0 kg for SG20RT
Weight per kW 1.1 kg/kW 1.1 kg/kW Same
Dimensions 480x370x195 mm 395x525x222 mm 480x370x195 mm vs 395x525x222 mm
Ingress protection IP65 IP65 Same
Cooling forced-air forced-air Same
Noise - - Neither datasheet publishes this
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet Yes Yes Same
Arc fault protection Yes - Not published by Growatt
Integrated DC switch Yes Yes Same
Warranty
Warranty - 5 yrs Not published by Sungrow
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.