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STP 15000TL-30 vs MID 15KTL3-X 10 of 22 identical Swap Change inverters

SMA Solar STP 15000TL-30 vs Growatt MID 15KTL3-X

SMA Solar
STP 15000TL-30
15 kW 98.0 % euro Grid-tie
Open inverter page Datasheet PDF
VS
Growatt MID 15KTL3-X
Growatt
MID 15KTL3-X
15 kW 98.6 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

MID 15KTL3-X leads on the differences that matter

The largest is european efficiency: 0.6 pp more efficient. 10 of 22 comparable parameters are identical, with 10 more left out because at least one datasheet does not publish them.

See all 12 differences
How alike are they
10 of 22 comparable
parameters are identical
identical differs not published
01

What actually differs

12 of 22 parameters
Parameter STP 15000TL-30 MID 15KTL3-X Difference
European efficiency 98.0 % 98.6 % 0.6 pp more efficient
Max DC voltage 1000 V 1100 V 100 V apart
Max AC power 15.00 kW 16.60 kW 1.60 kW apart
Max PV power 27.00 kW 22.50 kW 4.50 kW apart
DC/AC ratio 1.80 1.50 0.30 more oversizing headroom
Weight 61.0 kg 23.0 kg 38.0 kg lighter
Weight per kW 4.1 kg/kW 1.5 kg/kW 2.5 kg/kW lighter
Max efficiency 98.4 % 98.8 % 0.3 pp more efficient
Max AC current 29.0 A 24.2 A 4.8 A apart
Start voltage 188 V 250 V 62 V earlier start
MPPT voltage range 240-800 V 200-1000 V 240-800 V vs 200-1000 V
Dimensions 682x661x264 mm 395x525x222 mm 682x661x264 mm vs 395x525x222 mm
02

Full specification

Parameter STP 15000TL-30 MID 15KTL3-X Difference
AC output
Rated AC power 15.00 kW 15.00 kW Same
Max AC power 15.00 kW 16.60 kW 1.60 kW apart
Grid connection 3-phase 3-phase Same
Nominal AC voltage 400 V 400 V Same
Max AC current 29.0 A 24.2 A 4.8 A apart
PV input
Max PV power 27.00 kW 22.50 kW 4.50 kW apart
DC/AC ratio 1.80 1.50 +0.30 for STP 15000TL-30
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 15000TL-30
MPP trackers 2 2 Same
Strings per tracker 3 - Not published by Growatt
Max input current per tracker 33.0 A - Not published by Growatt
Efficiency
European efficiency 98.0 % 98.6 % +0.6 pp for MID 15KTL3-X
Max efficiency 98.4 % 98.8 % +0.3 pp for MID 15KTL3-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 61.0 kg 23.0 kg -38.0 kg for MID 15KTL3-X
Weight per kW 4.1 kg/kW 1.5 kg/kW -2.5 kg/kW for MID 15KTL3-X
Dimensions 682x661x264 mm 395x525x222 mm 682x661x264 mm vs 395x525x222 mm
Ingress protection IP65 IP65 Same
Cooling forced-air forced-air Same
Noise 51 dB - Not published by Growatt
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi - Yes Not published by SMA Solar
Ethernet Yes Yes Same
Arc fault protection - - Neither datasheet publishes this
Integrated DC switch Yes Yes Same
Warranty
Warranty 5 yrs 5 yrs Same
03

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10 differences, the largest is european efficiency
04

Written summary

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