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MID 20KTL3-X vs STP 20-50 (Sunny Tripower X 20) 11 of 23 identical Swap Change inverters

Growatt MID 20KTL3-X vs SMA Solar STP 20-50 (Sunny Tripower X 20)

Growatt MID 20KTL3-X
Growatt
MID 20KTL3-X
20 kW 98.6 % euro Grid-tie
Open inverter page Datasheet PDF
VS
SMA Solar STP 20-50 (Sunny Tripower X 20)
SMA Solar
STP 20-50 (Sunny Tripower X 20)
20 kW 97.9 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

MID 20KTL3-X leads on the differences that matter

The largest is european efficiency: 0.7 pp more efficient. 11 of 23 comparable parameters are identical, with 9 more left out because at least one datasheet does not publish them.

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

What actually differs

12 of 23 parameters
Parameter MID 20KTL3-X STP 20-50 (Sunny Tripower X 20) Difference
European efficiency 98.6 % 97.9 % 0.7 pp more efficient
Max DC voltage 1100 V 1000 V 100 V apart
Max efficiency 98.8 % 98.2 % 0.5 pp more efficient
Max AC power 22.00 kW 20.00 kW 2.00 kW apart
Weight 23.0 kg 35.0 kg 12.0 kg lighter
Weight per kW 1.1 kg/kW 1.8 kg/kW 0.6 kg/kW lighter
Nominal AC voltage 400 V 230 V 170 V apart
Max AC current 31.9 A 36.6 A 4.7 A apart
Start voltage 250 V 188 V 62 V earlier start
MPP trackers 2 3 1 tracker more
MPPT voltage range 200-1000 V 150-1000 V 200-1000 V vs 150-1000 V
Dimensions 395x525x222 mm 762x728x266 mm 395x525x222 mm vs 762x728x266 mm
02

Full specification

Parameter MID 20KTL3-X STP 20-50 (Sunny Tripower X 20) Difference
AC output
Rated AC power 20.00 kW 20.00 kW Same
Max AC power 22.00 kW 20.00 kW 2.00 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 230 V 170 V apart
Max AC current 31.9 A 36.6 A 4.7 A apart
PV input
Max PV power 30.00 kW 30.00 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 20-50 (Sunny Tripower X 20)
MPP trackers 2 3 +1 trackers for STP 20-50 (Sunny Tripower X 20)
Strings per tracker - 2 Not published by Growatt
Max input current per tracker - 24.0 A Not published by Growatt
Efficiency
European efficiency 98.6 % 97.9 % +0.7 pp for MID 20KTL3-X
Max efficiency 98.8 % 98.2 % +0.5 pp for MID 20KTL3-X
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 23.0 kg 35.0 kg -12.0 kg for MID 20KTL3-X
Weight per kW 1.1 kg/kW 1.8 kg/kW -0.6 kg/kW for MID 20KTL3-X
Dimensions 395x525x222 mm 762x728x266 mm 395x525x222 mm vs 762x728x266 mm
Ingress protection IP65 IP65 Same
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 Not published by Growatt
Integrated DC switch Yes Yes Same
Warranty
Warranty 5 yrs 5 yrs Same
03

More useful comparisons

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Sungrow
Growatt MID 20KTL3-X vs Sungrow SG20KTL-M
4 differences, the largest is max ac power
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Growatt MID 20KTL3-X vs Huawei SUN2000-20KTL-M2
8 differences, the largest is weight
04

Written summary

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