---
title: "GoodWe GW25K-MT vs SMA Solar STP 25-US-50 (Sunny Tripower X-US 25) - Inverter Comparison | ComparePV"
description: "Compare GoodWe GW25K-MT vs SMA Solar STP 25-US-50 (Sunny Tripower X-US 25) side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/goodwe-gw25k-mt/sma-solar-stp-25-us-50-sunny-tripower-x-us-25"
updated: 2026-01-16
---

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

10 differences, and they point both ways

The largest is max dc voltage: 100 V apart. 8 of 18 comparable parameters are identical, with 14 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [GoodWe GW25K-MT](https://comparepv.com/inverter/goodwe-gw25k-mt) | [SMA Solar STP 25-US-50 (Sunny Tripower X-US 25)](https://comparepv.com/inverter/sma-solar-stp-25-us-50-sunny-tripower-x-us-25) |
| Manufacturer | GoodWe | SMA Solar |
| Rated AC power | 25 kW | 25 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

Ranked by how much the difference matters, not by datasheet order.


| Parameter | GW25K-MT | STP 25-US-50 (Sunny Tripower X-US 25) | Difference |
| --- | --- | --- | --- |
| Max DC voltage | 1100 V | 1000 V | 100 V apart |
| Max input current per tracker | 30.0 A | 24.0 A | +6.0 A for GW25K-MT |
| Max AC power | 27.50 kW | 25.00 kW | 2.50 kW apart |
| Weight | 40.0 kg | 35.0 kg | -5.0 kg for STP 25-US-50 (Sunny Tripower X-US 25) |
| Nominal AC voltage | 400 V | 480 V | 80 V apart |
| Max AC current | 40.0 A | 30.0 A | 10.0 A apart |
| Ingress protection | IP65 | Type 4X (UL 50E) | IP65 vs Type 4X (UL 50E) |
| Weight per kW | 1.6 kg/kW | 1.4 kg/kW | -0.2 kg/kW for STP 25-US-50 (Sunny Tripower X-US 25) |
| MPPT voltage range | 200-950 V | 150-1000 V | 200-950 V vs 150-1000 V |
| Dimensions | 590x480x200 mm | 762x728x266 mm | 590x480x200 mm vs 762x728x266 mm |


## Every compared parameter


| Parameter | GW25K-MT | STP 25-US-50 (Sunny Tripower X-US 25) |
| --- | --- | --- |
| Rated AC power | 25.00 kW | 25.00 kW |
| Max AC power | 27.50 kW | 25.00 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 400 V | 480 V |
| Max AC current | 40.0 A | 30.0 A |
| Max PV power | - | 37.50 kW |
| DC/AC ratio | - | 1.50 |
| Max DC voltage | 1100 V | 1000 V |
| MPPT voltage range | 200-950 V | 150-1000 V |
| Start voltage | 180 V | 188 V |
| MPP trackers | - | 3 |
| Strings per tracker | 2 | 2 |
| Max input current per tracker | 30.0 A | 24.0 A |
| European efficiency | 98.4 % | - |
| Max efficiency | 98.7 % | - |
| CEC efficiency | - | 98.0 % |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 40.0 kg | 35.0 kg |
| Weight per kW | 1.6 kg/kW | 1.4 kg/kW |
| Dimensions | 590x480x200 mm | 762x728x266 mm |
| Ingress protection | IP65 | Type 4X (UL 50E) |
| Cooling | forced-air | forced-air |
| Noise | - | 59 dB |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | Yes | Yes |
| Ethernet | - | Yes |
| Arc fault protection | - | Yes |
| Integrated DC switch | Yes | Yes |
| Warranty | - | 10 yrs |


## Related comparisons

- [GoodWe GW25K-MT vs Growatt MID 25KTL3-X2 (Pro.E)](https://comparepv.com/compare-inverters/goodwe-gw25k-mt/growatt-mid-25ktl3-x2-pro-e) - 10 differences, the largest is max input current per tracker
- [GoodWe GW25K-MT vs Growatt MID 25KTL3-X](https://comparepv.com/compare-inverters/goodwe-gw25k-mt/growatt-mid-25ktl3-x) - 7 differences, the largest is weight
- [GoodWe GW25K-MT vs Growatt MID 25KTL3-X1](https://comparepv.com/compare-inverters/goodwe-gw25k-mt/growatt-mid-25ktl3-x1) - 9 differences, the largest is max input current per tracker


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Source: https://comparepv.com/compare-inverters/goodwe-gw25k-mt/sma-solar-stp-25-us-50-sunny-tripower-x-us-25

Not in this file, on the page: a written summary generated on request.