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STP 20-50 (Sunny Tripower X 20) vs SUN2000-20KTL-M2 11 of 25 identical Swap Change inverters

SMA Solar STP 20-50 (Sunny Tripower X 20) vs Huawei SUN2000-20KTL-M2

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
VS
Huawei
SUN2000-20KTL-M2
20 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SUN2000-20KTL-M2 leads on the differences that matter

The largest is max dc voltage: 80 V apart. 11 of 25 comparable parameters are identical, with 7 more left out because at least one datasheet does not publish them.

See all 14 differences
How alike are they
11 of 25 comparable
parameters are identical
identical differs not published
01

What actually differs

14 of 25 parameters
Parameter STP 20-50 (Sunny Tripower X 20) SUN2000-20KTL-M2 Difference
Max DC voltage 1000 V 1080 V 80 V apart
Max input current per tracker 24.0 A 22.0 A 2.0 A more headroom
European efficiency 97.9 % 98.3 % 0.4 pp more efficient
Max AC power 20.00 kW 22.00 kW 2.00 kW apart
Weight 35.0 kg 25.0 kg 10.0 kg lighter
Max efficiency 98.2 % 98.7 % 0.5 pp more efficient
Weight per kW 1.8 kg/kW 1.2 kg/kW 0.5 kg/kW lighter
Nominal AC voltage 230 V 400 V 170 V apart
Max AC current 36.6 A 33.5 A 3.1 A apart
MPP trackers 3 2 1 tracker more
MPPT voltage range 150-1000 V 160-950 V 150-1000 V vs 160-950 V
Start voltage 188 V 200 V 12 V earlier start
Dimensions 762x728x266 mm 470x525x262 mm 762x728x266 mm vs 470x525x262 mm
Cooling forced-air natural forced-air vs natural
02

Full specification

Parameter STP 20-50 (Sunny Tripower X 20) SUN2000-20KTL-M2 Difference
AC output
Rated AC power 20.00 kW 20.00 kW Same
Max AC power 20.00 kW 22.00 kW 2.00 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 230 V 400 V 170 V apart
Max AC current 36.6 A 33.5 A 3.1 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 1000 V 1080 V 80 V apart
MPPT voltage range 150-1000 V 160-950 V 150-1000 V vs 160-950 V
Start voltage 188 V 200 V -12 V for STP 20-50 (Sunny Tripower X 20)
MPP trackers 3 2 +1 trackers for STP 20-50 (Sunny Tripower X 20)
Strings per tracker 2 2 Same
Max input current per tracker 24.0 A 22.0 A +2.0 A for STP 20-50 (Sunny Tripower X 20)
Efficiency
European efficiency 97.9 % 98.3 % +0.4 pp for SUN2000-20KTL-M2
Max efficiency 98.2 % 98.7 % +0.5 pp for SUN2000-20KTL-M2
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 35.0 kg 25.0 kg -10.0 kg for SUN2000-20KTL-M2
Weight per kW 1.8 kg/kW 1.2 kg/kW -0.5 kg/kW for SUN2000-20KTL-M2
Dimensions 762x728x266 mm 470x525x262 mm 762x728x266 mm vs 470x525x262 mm
Ingress protection IP65 IP65 Same
Cooling forced-air natural forced-air vs natural
Noise 59 dB - Not published by Huawei
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 - Not published by Huawei
03

More useful comparisons

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12 differences, the largest is european efficiency
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SMA Solar STP 20-50 (Sunny Tripower X 20) vs Fronius Verto 20.0
11 differences, the largest is max input current per tracker
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Sungrow
SMA Solar STP 20-50 (Sunny Tripower X 20) vs Sungrow SG20KTL-M
12 differences, the largest is max dc voltage
Same type, similar size
Huawei
Huawei SUN2000-20KTL-M2 vs Huawei SUN2000-20KTL-M0
The same specification on paper
04

Written summary

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