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SG12RT-20 vs SUN-12K-G03 7 of 20 identical Swap Change inverters

Sungrow SG12RT-20 vs Deye SUN-12K-G03

Sungrow SG12RT-20
Sungrow
SG12RT-20
12 kW 98.1 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Deye SUN-12K-G03
Deye
SUN-12K-G03
12 kW 97.5 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

13 differences, and they point both ways

The largest is european efficiency: 0.6 pp more efficient. 7 of 20 comparable parameters are identical, with 12 more left out because at least one datasheet does not publish them.

See all 13 differences
How alike are they
7 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

13 of 20 parameters
Parameter SG12RT-20 SUN-12K-G03 Difference
European efficiency 98.1 % 97.5 % 0.6 pp more efficient
Max DC voltage 1100 V 1000 V 100 V apart
Max input current per tracker 25.0 A 13.0 A 12.0 A more headroom
Max AC power 12.00 kW 13.20 kW 1.20 kW apart
Weight 17.0 kg 11.0 kg 6.0 kg lighter
Weight per kW 1.4 kg/kW 0.9 kg/kW 0.5 kg/kW lighter
Start voltage 180 V 140 V 40 V earlier start
Max operating temperature 60 °C 65 °C 5 °C more heat tolerant
Max efficiency 98.5 % 98.3 % 0.2 pp more efficient
MPPT voltage range 160-1000 V 120-850 V 160-1000 V vs 120-850 V
Max AC current 20.0 A 19.1 A 0.9 A apart
Dimensions 480x370x195 mm 457x330x205 mm 480x370x195 mm vs 457x330x205 mm
Cooling forced-air natural forced-air vs natural
02

Full specification

Parameter SG12RT-20 SUN-12K-G03 Difference
AC output
Rated AC power 12.00 kW 12.00 kW Same
Max AC power 12.00 kW 13.20 kW 1.20 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 20.0 A 19.1 A 0.9 A apart
PV input
Max PV power - 15.60 kW Not published by Sungrow
DC/AC ratio - 1.30 Not published by Sungrow
Max DC voltage 1100 V 1000 V 100 V apart
MPPT voltage range 160-1000 V 120-850 V 160-1000 V vs 120-850 V
Start voltage 180 V 140 V -40 V for SUN-12K-G03
MPP trackers 2 2 Same
Strings per tracker 1 1 Same
Max input current per tracker 25.0 A 13.0 A +12.0 A for SG12RT-20
Efficiency
European efficiency 98.1 % 97.5 % +0.6 pp for SG12RT-20
Max efficiency 98.5 % 98.3 % +0.2 pp for SG12RT-20
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 17.0 kg 11.0 kg -6.0 kg for SUN-12K-G03
Weight per kW 1.4 kg/kW 0.9 kg/kW -0.5 kg/kW for SUN-12K-G03
Dimensions 480x370x195 mm 457x330x205 mm 480x370x195 mm vs 457x330x205 mm
Ingress protection IP65 IP65 Same
Cooling forced-air natural forced-air vs natural
Noise - 25 dB Not published by Sungrow
Max operating temperature 60 °C 65 °C +5 °C for SUN-12K-G03
Connectivity and safety
Wi-Fi - Yes Not published by Sungrow
Ethernet - Yes Not published by Sungrow
Arc fault protection - - Neither datasheet publishes this
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.