---
title: "Growatt MOD 8KTL3-X2(Pro) vs SMA Solar STP8.0-3AV-40 - Inverter Comparison | ComparePV"
description: "Compare Growatt MOD 8KTL3-X2(Pro) vs SMA Solar STP8.0-3AV-40 side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/growatt-mod-8ktl3-x2-pro/sma-solar-stp8-0-3av-40"
updated: 2026-01-16
---

# Growatt MOD 8KTL3-X2(Pro) vs SMA Solar STP8.0-3AV-40

MOD 8KTL3-X2(Pro) leads on the differences that matter

The largest is max dc voltage: 100 V apart. 9 of 24 comparable parameters are identical, with 8 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [Growatt MOD 8KTL3-X2(Pro)](https://comparepv.com/inverter/growatt-mod-8ktl3-x2-pro) | [SMA Solar STP8.0-3AV-40](https://comparepv.com/inverter/sma-solar-stp8-0-3av-40) |
| Manufacturer | Growatt | SMA Solar |
| Rated AC power | 8 kW | 8 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

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


| Parameter | MOD 8KTL3-X2(Pro) | STP8.0-3AV-40 | Difference |
| --- | --- | --- | --- |
| Max DC voltage | 1100 V | 1000 V | 100 V apart |
| Warranty | 8 yrs | 5 yrs | +3 yrs for MOD 8KTL3-X2(Pro) |
| European efficiency | 98.1 % | 97.7 % | +0.4 pp for MOD 8KTL3-X2(Pro) |
| Max PV power | 12.00 kW | 15.00 kW | 3.00 kW apart |
| DC/AC ratio | 1.50 | 1.88 | +0.38 for STP8.0-3AV-40 |
| Weight | 14.6 kg | 20.5 kg | -5.9 kg for MOD 8KTL3-X2(Pro) |
| Weight per kW | 1.8 kg/kW | 2.6 kg/kW | -0.7 kg/kW for MOD 8KTL3-X2(Pro) |
| Max efficiency | 98.6 % | 98.3 % | +0.3 pp for MOD 8KTL3-X2(Pro) |
| Nominal AC voltage | 400 V | 230 V | 170 V apart |
| Ingress protection | IP66 | IP65 | IP66 vs IP65 |
| Max AC current | 13.3 A | 12.1 A | 1.2 A apart |
| MPPT voltage range | 140-1000 V | 260-800 V | 140-1000 V vs 260-800 V |
| Start voltage | 160 V | 175 V | -15 V for MOD 8KTL3-X2(Pro) |
| Strings per tracker | 1 | 2 | 1 string apart |
| Dimensions | 387x425x178 mm | 497x460x176 mm | 387x425x178 mm vs 497x460x176 mm |


## Every compared parameter


| Parameter | MOD 8KTL3-X2(Pro) | STP8.0-3AV-40 |
| --- | --- | --- |
| Rated AC power | 8.00 kW | 8.00 kW |
| Max AC power | 8.00 kW | 8.00 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 400 V | 230 V |
| Max AC current | 13.3 A | 12.1 A |
| Max PV power | 12.00 kW | 15.00 kW |
| DC/AC ratio | 1.50 | 1.88 |
| Max DC voltage | 1100 V | 1000 V |
| MPPT voltage range | 140-1000 V | 260-800 V |
| Start voltage | 160 V | 175 V |
| MPP trackers | 2 | 2 |
| Strings per tracker | 1 | 2 |
| Max input current per tracker | 20.0 A | 20.0 A |
| European efficiency | 98.1 % | 97.7 % |
| Max efficiency | 98.6 % | 98.3 % |
| CEC efficiency | - | - |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 14.6 kg | 20.5 kg |
| Weight per kW | 1.8 kg/kW | 2.6 kg/kW |
| Dimensions | 387x425x178 mm | 497x460x176 mm |
| Ingress protection | IP66 | IP65 |
| Cooling | natural | natural |
| Noise | - | 30 dB |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | Yes | Yes |
| Ethernet | Yes | Yes |
| Arc fault protection | Yes | - |
| Integrated DC switch | - | Yes |
| Warranty | 8 yrs | 5 yrs |


## Related comparisons

- [Growatt MOD 8KTL3-X2(Pro) vs Growatt MOD 8000TL3-X](https://comparepv.com/compare-inverters/growatt-mod-8ktl3-x2-pro/growatt-mod-8000tl3-x) - 3 differences, the largest is max input current per tracker
- [Growatt MOD 8KTL3-X2(Pro) vs Sungrow SG8.0RT-20](https://comparepv.com/compare-inverters/growatt-mod-8ktl3-x2-pro/sungrow-sg8-0rt-20) - 8 differences, the largest is max input current per tracker
- [Growatt MOD 8KTL3-X2(Pro) vs GoodWe GW8000-DT](https://comparepv.com/compare-inverters/growatt-mod-8ktl3-x2-pro/goodwe-gw8000-dt) - 9 differences, the largest is max dc voltage


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Source: https://comparepv.com/compare-inverters/growatt-mod-8ktl3-x2-pro/sma-solar-stp8-0-3av-40

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