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SG20RT-20 vs SUN2000-20KTL-M2 9 of 20 identical Swap Change inverters

Sungrow SG20RT-20 vs Huawei SUN2000-20KTL-M2

Sungrow SG20RT-20
Sungrow
SG20RT-20
20 kW 98.2 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Huawei
SUN2000-20KTL-M2
20 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SG20RT-20 leads on the differences that matter

The largest is max input current per tracker: 3.0 A more headroom. 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 SG20RT-20 SUN2000-20KTL-M2 Difference
Max input current per tracker 25.0 A 22.0 A 3.0 A more headroom
Max AC power 20.00 kW 22.00 kW 2.00 kW apart
Weight 20.0 kg 25.0 kg 5.0 kg lighter
Max DC voltage 1100 V 1080 V 20 V apart
Max AC current 31.9 A 33.5 A 1.6 A apart
Weight per kW 1.0 kg/kW 1.2 kg/kW 0.2 kg/kW lighter
MPPT voltage range 160-1000 V 160-950 V 160-1000 V vs 160-950 V
Start voltage 180 V 200 V 20 V earlier start
Strings per tracker 1 2 1 string apart
Dimensions 480x370x195 mm 470x525x262 mm 480x370x195 mm vs 470x525x262 mm
Cooling forced-air natural forced-air vs natural
02

Full specification

Parameter SG20RT-20 SUN2000-20KTL-M2 Difference
AC output
Rated AC power 20.00 kW 20.00 kW Same
Max AC power 20.00 kW 22.00 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 33.5 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 1100 V 1080 V 20 V apart
MPPT voltage range 160-1000 V 160-950 V 160-1000 V vs 160-950 V
Start voltage 180 V 200 V -20 V for SG20RT-20
MPP trackers 2 2 Same
Strings per tracker 1 2 1 string apart
Max input current per tracker 25.0 A 22.0 A +3.0 A for SG20RT-20
Efficiency
European efficiency 98.2 % 98.3 % Effectively the same
Max efficiency 98.6 % 98.7 % Effectively the 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 20.0 kg 25.0 kg -5.0 kg for SG20RT-20
Weight per kW 1.0 kg/kW 1.2 kg/kW -0.2 kg/kW for SG20RT-20
Dimensions 480x370x195 mm 470x525x262 mm 480x370x195 mm vs 470x525x262 mm
Ingress protection IP65 IP65 Same
Cooling forced-air natural forced-air vs natural
Noise - - Neither datasheet publishes this
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

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Sungrow SG20RT-20 vs Sungrow SG20KTL-M
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Huawei
Huawei SUN2000-20KTL-M2 vs Huawei SUN2000-20KTL-M0
The same specification on paper
04

Written summary

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