---
title: "SMA Solar STP 125-70 (Sunny Tripower 125) vs SOFAR 125KTLX-G4-A - Inverter Comparison | ComparePV"
description: "Compare SMA Solar STP 125-70 (Sunny Tripower 125) vs SOFAR 125KTLX-G4-A side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/sma-solar-stp-125-70-sunny-tripower-125/sofar-solar-sofar-125ktlx-g4-a"
updated: 2026-01-16
---

# SMA Solar STP 125-70 (Sunny Tripower 125) vs SOFAR 125KTLX-G4-A

SOFAR 125KTLX-G4-A leads on the differences that matter

The largest is max input current per tracker: 10.0 A more headroom. 14 of 22 comparable parameters are identical, with 10 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [SMA Solar STP 125-70 (Sunny Tripower 125)](https://comparepv.com/inverter/sma-solar-stp-125-70-sunny-tripower-125) | [SOFAR 125KTLX-G4-A](https://comparepv.com/inverter/sofar-solar-sofar-125ktlx-g4-a) |
| Manufacturer | SMA Solar | Sofar Solar |
| Rated AC power | 125 kW | 125 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

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


| Parameter | STP 125-70 (Sunny Tripower 125) | SOFAR 125KTLX-G4-A | Difference |
| --- | --- | --- | --- |
| Max input current per tracker | 30.0 A | 40.0 A | +10.0 A for SOFAR 125KTLX-G4-A |
| MPP trackers | 12 | 10 | +2 trackers for STP 125-70 (Sunny Tripower 125) |
| Weight | 96.0 kg | 75.0 kg | -21.0 kg for SOFAR 125KTLX-G4-A |
| European efficiency | 98.1 % | 98.3 % | +0.2 pp for SOFAR 125KTLX-G4-A |
| Max AC current | 181.1 A | 190.0 A | 8.9 A apart |
| Ingress protection | IP65 | IP66 | IP65 vs IP66 |
| Max efficiency | 98.4 % | 98.6 % | +0.2 pp for SOFAR 125KTLX-G4-A |
| Dimensions | 795x1020x360 mm | 695x970x325 mm | 795x1020x360 mm vs 695x970x325 mm |


## Every compared parameter


| Parameter | STP 125-70 (Sunny Tripower 125) | SOFAR 125KTLX-G4-A |
| --- | --- | --- |
| Rated AC power | 125.00 kW | 125.00 kW |
| Max AC power | 125.00 kW | 125.00 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 400 V | 400 V |
| Max AC current | 181.1 A | 190.0 A |
| Max PV power | 187.50 kW | - |
| DC/AC ratio | 1.50 | - |
| Max DC voltage | 1100 V | 1100 V |
| MPPT voltage range | 180-1000 V | 180-1000 V |
| Start voltage | 200 V | 200 V |
| MPP trackers | 12 | 10 |
| Strings per tracker | 2 | 2 |
| Max input current per tracker | 30.0 A | 40.0 A |
| European efficiency | 98.1 % | 98.3 % |
| Max efficiency | 98.4 % | 98.6 % |
| CEC efficiency | - | - |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 96.0 kg | 75.0 kg |
| Weight per kW | 0.8 kg/kW | 0.6 kg/kW |
| Dimensions | 795x1020x360 mm | 695x970x325 mm |
| Ingress protection | IP65 | IP66 |
| Cooling | forced-air | forced-air |
| Noise | 71 dB | - |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | Yes | Yes |
| Ethernet | Yes | - |
| Arc fault protection | Yes | Yes |
| Integrated DC switch | Yes | Yes |
| Warranty | 5 yrs | - |


## Related comparisons

- [SMA Solar STP 125-70 (Sunny Tripower 125) vs Ginlong Solis S5-GC125K-HV](https://comparepv.com/compare-inverters/sma-solar-stp-125-70-sunny-tripower-125/ginlong-solis-s5-gc125k-hv) - 9 differences, the largest is european efficiency
- [SMA Solar STP 125-70 (Sunny Tripower 125) vs Growatt MAX 125KTL3-X LV](https://comparepv.com/compare-inverters/sma-solar-stp-125-70-sunny-tripower-125/growatt-max-125ktl3-x-lv) - 7 differences, the largest is max input current per tracker
- [SMA Solar STP 125-70 (Sunny Tripower 125) vs Sungrow SG125CX-P2](https://comparepv.com/compare-inverters/sma-solar-stp-125-70-sunny-tripower-125/sungrow-sg125cx-p2) - 5 differences, the largest is max pv power
- [SOFAR 125KTLX-G4-A vs Ginlong Solis S6-GC125K](https://comparepv.com/compare-inverters/sofar-solar-sofar-125ktlx-g4-a/ginlong-solis-s6-gc125k) - 5 differences, the largest is max input current per tracker


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Source: https://comparepv.com/compare-inverters/sma-solar-stp-125-70-sunny-tripower-125/sofar-solar-sofar-125ktlx-g4-a

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