Skip to main content
MID 30KTL3-X vs STP 30-US-50 (Sunny Tripower X-US 30) 12 of 23 identical Swap Change inverters

Growatt MID 30KTL3-X vs SMA Solar STP 30-US-50 (Sunny Tripower X-US 30)

Growatt MID 30KTL3-X
Growatt
MID 30KTL3-X
30 kW 98.5 % euro Grid-tie
Open inverter page Datasheet PDF
VS
SMA Solar STP 30-US-50 (Sunny Tripower X-US 30)
SMA Solar
STP 30-US-50 (Sunny Tripower X-US 30)
30 kW Grid-tie
Open inverter page Datasheet PDF
The verdict

11 differences, and they point both ways

The largest is warranty: 5 yrs longer. 12 of 23 comparable parameters are identical, with 9 more left out because at least one datasheet does not publish them.

See all 11 differences
How alike are they
12 of 23 comparable
parameters are identical
identical differs not published
01

What actually differs

11 of 23 parameters
Parameter MID 30KTL3-X STP 30-US-50 (Sunny Tripower X-US 30) Difference
Warranty 5 yrs 10 yrs 5 yrs longer
Max DC voltage 1100 V 1000 V 100 V apart
Max input current per tracker 26.0 A 24.0 A 2.0 A more headroom
Max AC power 33.30 kW 30.00 kW 3.30 kW apart
Weight 29.5 kg 35.0 kg 5.5 kg lighter
Nominal AC voltage 400 V 480 V 80 V apart
Max AC current 50.5 A 36.0 A 14.5 A apart
Start voltage 250 V 188 V 62 V earlier start
Ingress protection IP66 Type 4X (UL 50E) IP66 vs Type 4X (UL 50E)
MPPT voltage range 200-1000 V 150-1000 V 200-1000 V vs 150-1000 V
Dimensions 435x580x230 mm 762x728x266 mm 435x580x230 mm vs 762x728x266 mm
02

Full specification

Parameter MID 30KTL3-X STP 30-US-50 (Sunny Tripower X-US 30) Difference
AC output
Rated AC power 30.00 kW 30.00 kW Same
Max AC power 33.30 kW 30.00 kW 3.30 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 480 V 80 V apart
Max AC current 50.5 A 36.0 A 14.5 A apart
PV input
Max PV power 45.00 kW 45.00 kW Same
DC/AC ratio 1.50 1.50 Same
Max DC voltage 1100 V 1000 V 100 V apart
MPPT voltage range 200-1000 V 150-1000 V 200-1000 V vs 150-1000 V
Start voltage 250 V 188 V -62 V for STP 30-US-50 (Sunny Tripower X-US 30)
MPP trackers - 3 Not published by Growatt
Strings per tracker 2 2 Same
Max input current per tracker 26.0 A 24.0 A +2.0 A for MID 30KTL3-X
Efficiency
European efficiency 98.5 % - Not published by SMA Solar
Max efficiency 98.8 % - Not published by SMA Solar
CEC efficiency - 98.0 % Not published by Growatt
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 29.5 kg 35.0 kg -5.5 kg for MID 30KTL3-X
Weight per kW 1.0 kg/kW 1.2 kg/kW Effectively the same
Dimensions 435x580x230 mm 762x728x266 mm 435x580x230 mm vs 762x728x266 mm
Ingress protection IP66 Type 4X (UL 50E) IP66 vs Type 4X (UL 50E)
Cooling forced-air forced-air Same
Noise - 59 dB Not published by Growatt
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet Yes Yes Same
Arc fault protection Yes Yes Same
Integrated DC switch Yes Yes Same
Warranty
Warranty 5 yrs 10 yrs +5 yrs for STP 30-US-50 (Sunny Tripower X-US 30)
03

More useful comparisons

Open all inverters
Same type, similar size
Growatt
Growatt MID 30KTL3-X vs Growatt MID 30KTL3-X2 (Pro.E)
5 differences, the largest is max input current per tracker
Same type, similar size
Growatt
Growatt MID 30KTL3-X vs Growatt MID 30KTL3-X2-1
5 differences, the largest is max input current per tracker
Same type, similar size
GoodWe
Growatt MID 30KTL3-X vs GoodWe GW30K-MT
9 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.