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GW8K-MS-CN-G40 vs SG8.0RT-20 6 of 19 identical Swap Change inverters

GoodWe GW8K-MS-CN-G40 vs Sungrow SG8.0RT-20

GoodWe GW8K-MS-CN-G40
GoodWe
GW8K-MS-CN-G40
8 kW Grid-tie
Open inverter page Datasheet PDF
VS
Sungrow SG8.0RT-20
Sungrow
SG8.0RT-20
8 kW 98.0 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SG8.0RT-20 leads on the differences that matter

The largest is max dc voltage: 500 V apart. 6 of 19 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.

See all 13 differences
How alike are they
6 of 19 comparable
parameters are identical
identical differs not published
01

What actually differs

13 of 19 parameters
Parameter GW8K-MS-CN-G40 SG8.0RT-20 Difference
Max DC voltage 600 V 1100 V 500 V apart
Max input current per tracker 20.0 A 25.0 A 5.0 A more headroom
Max AC power 8.80 kW 8.00 kW 0.80 kW apart
Max efficiency 98.0 % 98.5 % 0.5 pp more efficient
Grid connection Single-phase 3-phase Single-phase vs 3-phase
Nominal AC voltage 220 V 400 V 180 V apart
Max AC current 40.0 A 13.3 A 26.7 A apart
Start voltage 50 V 180 V 130 V earlier start
Weight 16.0 kg 17.0 kg 1.0 kg lighter
Ingress protection IP66 IP65 IP66 vs IP65
MPPT voltage range 40-560 V 160-1000 V 40-560 V vs 160-1000 V
Dimensions 365x493x187 mm 480x370x195 mm 365x493x187 mm vs 480x370x195 mm
Cooling natural forced-air natural vs forced-air
02

Full specification

Parameter GW8K-MS-CN-G40 SG8.0RT-20 Difference
AC output
Rated AC power 8.00 kW 8.00 kW Same
Max AC power 8.80 kW 8.00 kW 0.80 kW apart
Grid connection Single-phase 3-phase Single-phase vs 3-phase
Nominal AC voltage 220 V 400 V 180 V apart
Max AC current 40.0 A 13.3 A 26.7 A apart
PV input
Max PV power - - Neither datasheet publishes this
DC/AC ratio - - Neither datasheet publishes this
Max DC voltage 600 V 1100 V 500 V apart
MPPT voltage range 40-560 V 160-1000 V 40-560 V vs 160-1000 V
Start voltage 50 V 180 V -130 V for GW8K-MS-CN-G40
MPP trackers 2 2 Same
Strings per tracker 1 1 Same
Max input current per tracker 20.0 A 25.0 A +5.0 A for SG8.0RT-20
Efficiency
European efficiency - 98.0 % Not published by GoodWe
Max efficiency 98.0 % 98.5 % +0.5 pp for SG8.0RT-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 16.0 kg 17.0 kg -1.0 kg for GW8K-MS-CN-G40
Weight per kW 2.0 kg/kW 2.1 kg/kW Effectively the same
Dimensions 365x493x187 mm 480x370x195 mm 365x493x187 mm vs 480x370x195 mm
Ingress protection IP66 IP65 IP66 vs IP65
Cooling natural forced-air natural vs forced-air
Noise 30 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

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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.