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STP 20000TL-30 vs SG20KTL-M 9 of 20 identical Swap Change inverters

SMA Solar STP 20000TL-30 vs Sungrow SG20KTL-M

SMA Solar STP 20000TL-30
SMA Solar
STP 20000TL-30
20 kW 98.0 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Sungrow
SG20KTL-M
20 kW 98.3 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SG20KTL-M leads on the differences that matter

The largest is max dc voltage: 100 V apart. 9 of 20 comparable parameters are identical, with 12 more left out because at least one datasheet does not publish them.

See all 11 differences
How alike are they
9 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

11 of 20 parameters
Parameter STP 20000TL-30 SG20KTL-M Difference
Max DC voltage 1000 V 1100 V 100 V apart
Max input current per tracker 33.0 A 22.0 A 11.0 A more headroom
Weight 61.0 kg 24.0 kg 37.0 kg lighter
Weight per kW 3.0 kg/kW 1.2 kg/kW 1.8 kg/kW lighter
European efficiency 98.0 % 98.3 % 0.3 pp more efficient
Max AC current 29.0 A 31.9 A 2.9 A apart
Start voltage 188 V 250 V 62 V earlier start
Max efficiency 98.4 % 98.6 % 0.2 pp more efficient
MPPT voltage range 240-800 V 200-1000 V 240-800 V vs 200-1000 V
Strings per tracker 3 2 1 string apart
Dimensions 682x661x264 mm 485x370x210 mm 682x661x264 mm vs 485x370x210 mm
02

Full specification

Parameter STP 20000TL-30 SG20KTL-M Difference
AC output
Rated AC power 20.00 kW 20.00 kW Same
Max AC power 20.00 kW 20.00 kW Same
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 29.0 A 31.9 A 2.9 A apart
PV input
Max PV power 36.00 kW - Not published by Sungrow
DC/AC ratio 1.80 - Not published by Sungrow
Max DC voltage 1000 V 1100 V 100 V apart
MPPT voltage range 240-800 V 200-1000 V 240-800 V vs 200-1000 V
Start voltage 188 V 250 V -62 V for STP 20000TL-30
MPP trackers 2 2 Same
Strings per tracker 3 2 1 string apart
Max input current per tracker 33.0 A 22.0 A +11.0 A for STP 20000TL-30
Efficiency
European efficiency 98.0 % 98.3 % +0.3 pp for SG20KTL-M
Max efficiency 98.4 % 98.6 % +0.2 pp for SG20KTL-M
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 61.0 kg 24.0 kg -37.0 kg for SG20KTL-M
Weight per kW 3.0 kg/kW 1.2 kg/kW -1.8 kg/kW for SG20KTL-M
Dimensions 682x661x264 mm 485x370x210 mm 682x661x264 mm vs 485x370x210 mm
Ingress protection IP65 IP65 Same
Cooling forced-air forced-air Same
Noise 51 dB - Not published by Sungrow
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi - - Neither datasheet publishes this
Ethernet Yes - Not published by Sungrow
Arc fault protection - - Neither datasheet publishes this
Integrated DC switch Yes Yes Same
Warranty
Warranty 5 yrs - Not published by Sungrow
03

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8 differences, the largest is max ac power
04

Written summary

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