Skip to main content
SG40CX vs Solis-40K 11 of 16 identical Swap Change inverters

Sungrow SG40CX vs Solis-40K

Sungrow SG40CX
Sungrow
SG40CX
40 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Solis-40K
Ginlong Solis
Solis-40K
40 kW 98.4 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

5 differences, and they point both ways

The largest is weight: 3.0 kg lighter. 11 of 16 comparable parameters are identical, with 16 more left out because at least one datasheet does not publish them.

See all 5 differences
How alike are they
11 of 16 comparable
parameters are identical
identical differs not published
01

What actually differs

5 of 16 parameters
Parameter SG40CX Solis-40K Difference
Weight 58.0 kg 61.0 kg 3.0 kg lighter
Start voltage 250 V 200 V 50 V earlier start
Max efficiency 98.6 % 98.8 % 0.2 pp more efficient
Ingress protection IP66 IP65 IP66 vs IP65
Dimensions 645x782x310 mm 700x630x357 mm 645x782x310 mm vs 700x630x357 mm
02

Full specification

Parameter SG40CX Solis-40K Difference
AC output
Rated AC power 40.00 kW 40.00 kW Same
Max AC power 44.00 kW 44.00 kW Same
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 66.9 A 66.9 A Same
PV input
Max PV power - 48.00 kW Not published by Sungrow
DC/AC ratio - 1.20 Not published by Sungrow
Max DC voltage 1100 V 1100 V Same
MPPT voltage range 200-1000 V 200-1000 V Same
Start voltage 250 V 200 V -50 V for Solis-40K
MPP trackers - 4 Not published by Sungrow
Strings per tracker 2 - Not published by Ginlong Solis
Max input current per tracker 26.0 A - Not published by Ginlong Solis
Efficiency
European efficiency 98.3 % 98.4 % Effectively the same
Max efficiency 98.6 % 98.8 % +0.2 pp for Solis-40K
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 58.0 kg 61.0 kg -3.0 kg for SG40CX
Weight per kW 1.4 kg/kW 1.5 kg/kW Effectively the same
Dimensions 645x782x310 mm 700x630x357 mm 645x782x310 mm vs 700x630x357 mm
Ingress protection IP66 IP65 IP66 vs IP65
Cooling forced-air - Not published by Ginlong Solis
Noise - - Neither datasheet publishes this
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi - Yes Not published by Sungrow
Ethernet - - Neither datasheet publishes this
Arc fault protection - - Neither datasheet publishes this
Integrated DC switch Yes Yes Same
Warranty
Warranty - - Neither datasheet publishes this
03

More useful comparisons

Open all inverters
Same type, similar size
Growatt
Sungrow SG40CX vs Growatt MID 40KTL3-X
5 differences, the largest is weight
Same type, similar size
Huawei
Sungrow SG40CX vs Huawei SUN2000-40KTL-M3
7 differences, the largest is max ac power
Same type, similar size
Sungrow
Sungrow SG40CX vs Sungrow SG40CX-P2
6 differences, the largest is max input current per tracker
04

Written summary

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