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STP 25-50 (Sunny Tripower X 25) vs GW25K-MT 9 of 20 identical Swap Change inverters

SMA Solar STP 25-50 (Sunny Tripower X 25) vs GoodWe GW25K-MT

SMA Solar STP 25-50 (Sunny Tripower X 25)
SMA Solar
STP 25-50 (Sunny Tripower X 25)
25 kW 98.0 % euro Grid-tie
Open inverter page Datasheet PDF
VS
GoodWe GW25K-MT
GoodWe
GW25K-MT
25 kW 98.4 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

GW25K-MT 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 25-50 (Sunny Tripower X 25) GW25K-MT Difference
Max DC voltage 1000 V 1100 V 100 V apart
Max input current per tracker 24.0 A 30.0 A 6.0 A more headroom
European efficiency 98.0 % 98.4 % 0.4 pp more efficient
Max AC power 25.00 kW 27.50 kW 2.50 kW apart
Weight 35.0 kg 40.0 kg 5.0 kg lighter
Max efficiency 98.2 % 98.7 % 0.5 pp more efficient
Nominal AC voltage 230 V 400 V 170 V apart
Max AC current 36.6 A 40.0 A 3.4 A apart
Weight per kW 1.4 kg/kW 1.6 kg/kW 0.2 kg/kW lighter
MPPT voltage range 150-1000 V 200-950 V 150-1000 V vs 200-950 V
Dimensions 762x728x266 mm 590x480x200 mm 762x728x266 mm vs 590x480x200 mm
02

Full specification

Parameter STP 25-50 (Sunny Tripower X 25) GW25K-MT Difference
AC output
Rated AC power 25.00 kW 25.00 kW Same
Max AC power 25.00 kW 27.50 kW 2.50 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 40.0 A 3.4 A apart
PV input
Max PV power 37.50 kW - Not published by GoodWe
DC/AC ratio 1.50 - Not published by GoodWe
Max DC voltage 1000 V 1100 V 100 V apart
MPPT voltage range 150-1000 V 200-950 V 150-1000 V vs 200-950 V
Start voltage 188 V 180 V Effectively the same
MPP trackers 3 - Not published by GoodWe
Strings per tracker 2 2 Same
Max input current per tracker 24.0 A 30.0 A +6.0 A for GW25K-MT
Efficiency
European efficiency 98.0 % 98.4 % +0.4 pp for GW25K-MT
Max efficiency 98.2 % 98.7 % +0.5 pp for GW25K-MT
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 40.0 kg -5.0 kg for STP 25-50 (Sunny Tripower X 25)
Weight per kW 1.4 kg/kW 1.6 kg/kW -0.2 kg/kW for STP 25-50 (Sunny Tripower X 25)
Dimensions 762x728x266 mm 590x480x200 mm 762x728x266 mm vs 590x480x200 mm
Ingress protection IP65 IP65 Same
Cooling forced-air forced-air Same
Noise 59 dB - Not published by GoodWe
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet Yes - Not published by GoodWe
Arc fault protection Yes - Not published by GoodWe
Integrated DC switch Yes Yes Same
Warranty
Warranty 5 yrs - Not published by GoodWe
03

More useful comparisons

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Fronius International
GoodWe GW25K-MT vs Fronius Verto 25.0 400
9 differences, the largest is max dc voltage
04

Written summary

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