---
title: "Growatt MOD 12KTL3-X2(Pro) vs SMA Solar STP 12-50 (Sunny Tripower X 12) - Inverter Comparison | ComparePV"
description: "Compare Growatt MOD 12KTL3-X2(Pro) vs SMA Solar STP 12-50 (Sunny Tripower X 12) side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/growatt-mod-12ktl3-x2-pro/sma-solar-stp-12-50-sunny-tripower-x-12"
updated: 2026-01-16
---

# Growatt MOD 12KTL3-X2(Pro) vs SMA Solar STP 12-50 (Sunny Tripower X 12)

MOD 12KTL3-X2(Pro) leads on the differences that matter

The largest is european efficiency: 0.6 pp more efficient. 10 of 25 comparable parameters are identical, with 7 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [Growatt MOD 12KTL3-X2(Pro)](https://comparepv.com/inverter/growatt-mod-12ktl3-x2-pro) | [SMA Solar STP 12-50 (Sunny Tripower X 12)](https://comparepv.com/inverter/sma-solar-stp-12-50-sunny-tripower-x-12) |
| Manufacturer | Growatt | SMA Solar |
| Rated AC power | 12 kW | 12 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

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


| Parameter | MOD 12KTL3-X2(Pro) | STP 12-50 (Sunny Tripower X 12) | Difference |
| --- | --- | --- | --- |
| European efficiency | 98.2 % | 97.6 % | +0.6 pp for MOD 12KTL3-X2(Pro) |
| Max DC voltage | 1100 V | 1000 V | 100 V apart |
| Max input current per tracker | 20.0 A | 24.0 A | +4.0 A for STP 12-50 (Sunny Tripower X 12) |
| Warranty | 8 yrs | 5 yrs | +3 yrs for MOD 12KTL3-X2(Pro) |
| Weight | 15.6 kg | 35.0 kg | -19.4 kg for MOD 12KTL3-X2(Pro) |
| Weight per kW | 1.3 kg/kW | 2.9 kg/kW | -1.6 kg/kW for MOD 12KTL3-X2(Pro) |
| Max efficiency | 98.6 % | 98.2 % | +0.4 pp for MOD 12KTL3-X2(Pro) |
| Nominal AC voltage | 400 V | 230 V | 170 V apart |
| MPP trackers | 2 | 3 | +1 trackers for STP 12-50 (Sunny Tripower X 12) |
| Ingress protection | IP66 | IP65 | IP66 vs IP65 |
| Start voltage | 160 V | 188 V | -28 V for MOD 12KTL3-X2(Pro) |
| MPPT voltage range | 140-1000 V | 150-1000 V | 140-1000 V vs 150-1000 V |
| Strings per tracker | 1 | 2 | 1 string apart |
| Dimensions | 387x425x178 mm | 762x728x266 mm | 387x425x178 mm vs 762x728x266 mm |
| Cooling | natural | forced-air | natural vs forced-air |


## Every compared parameter


| Parameter | MOD 12KTL3-X2(Pro) | STP 12-50 (Sunny Tripower X 12) |
| --- | --- | --- |
| Rated AC power | 12.00 kW | 12.00 kW |
| Max AC power | 12.00 kW | 12.00 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 400 V | 230 V |
| Max AC current | 20.0 A | 20.0 A |
| Max PV power | 18.00 kW | 18.00 kW |
| DC/AC ratio | 1.50 | 1.50 |
| Max DC voltage | 1100 V | 1000 V |
| MPPT voltage range | 140-1000 V | 150-1000 V |
| Start voltage | 160 V | 188 V |
| MPP trackers | 2 | 3 |
| Strings per tracker | 1 | 2 |
| Max input current per tracker | 20.0 A | 24.0 A |
| European efficiency | 98.2 % | 97.6 % |
| Max efficiency | 98.6 % | 98.2 % |
| CEC efficiency | - | - |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 15.6 kg | 35.0 kg |
| Weight per kW | 1.3 kg/kW | 2.9 kg/kW |
| Dimensions | 387x425x178 mm | 762x728x266 mm |
| Ingress protection | IP66 | IP65 |
| Cooling | natural | forced-air |
| Noise | - | 59 dB |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | Yes | Yes |
| Ethernet | Yes | Yes |
| Arc fault protection | Yes | Yes |
| Integrated DC switch | - | Yes |
| Warranty | 8 yrs | 5 yrs |


## Related comparisons

- [Growatt MOD 12KTL3-X2(Pro) vs Growatt MOD 12KTL3-X](https://comparepv.com/compare-inverters/growatt-mod-12ktl3-x2-pro/growatt-mod-12ktl3-x) - 4 differences, the largest is max input current per tracker
- [Growatt MOD 12KTL3-X2(Pro) vs Sungrow SG12KTL-M](https://comparepv.com/compare-inverters/growatt-mod-12ktl3-x2-pro/sungrow-sg12ktl-m) - 7 differences, the largest is max input current per tracker
- [Growatt MOD 12KTL3-X2(Pro) vs Sungrow SG12RT-20](https://comparepv.com/compare-inverters/growatt-mod-12ktl3-x2-pro/sungrow-sg12rt-20) - 7 differences, the largest is max input current per tracker


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Source: https://comparepv.com/compare-inverters/growatt-mod-12ktl3-x2-pro/sma-solar-stp-12-50-sunny-tripower-x-12

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