---
title: "Fronius Tauro ECO 99-3-D (Direct) vs Fronius Tauro ECO 99-3-P (ECO | 1 MPPT) - Inverter Comparison | ComparePV"
description: "Compare Fronius Tauro ECO 99-3-D (Direct) vs Fronius Tauro ECO 99-3-P (ECO | 1 MPPT) side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/fronius-international-fronius-tauro-eco-99-3-d-direct/fronius-international-fronius-tauro-eco-99-3-p-eco-1-mppt"
updated: 2026-01-16
---

# Fronius Tauro ECO 99-3-D (Direct) vs Fronius Tauro ECO 99-3-P (ECO \| 1 MPPT)

One difference, none of them an advantage

The largest is max ac current: 6.6 A apart. 18 of 19 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [Fronius Tauro ECO 99-3-D (Direct)](https://comparepv.com/inverter/fronius-international-fronius-tauro-eco-99-3-d-direct) | [Fronius Tauro ECO 99-3-P (ECO \| 1 MPPT)](https://comparepv.com/inverter/fronius-international-fronius-tauro-eco-99-3-p-eco-1-mppt) |
| Manufacturer | Fronius International | Fronius International |
| Rated AC power | 99.99 kW | 99.99 kW |
| Type | Grid-tie | Grid-tie |


## Where they differ

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


| Parameter | D (Direct) | P (ECO \| 1 MPPT) | Difference |
| --- | --- | --- | --- |
| Max AC current | 144.9 A | 151.5 A | 6.6 A apart |


## Every compared parameter


| Parameter | D (Direct) | P (ECO \| 1 MPPT) |
| --- | --- | --- |
| Rated AC power | 99.99 kW | 99.99 kW |
| Max AC power | 99.99 kW | 99.99 kW |
| Grid connection | 3-phase | 3-phase |
| Nominal AC voltage | 400 V | 400 V |
| Max AC current | 144.9 A | 151.5 A |
| Max PV power | 150.00 kW | 150.00 kW |
| DC/AC ratio | 1.50 | 1.50 |
| Max DC voltage | 1000 V | 1000 V |
| MPPT voltage range | - | - |
| Start voltage | - | - |
| MPP trackers | - | - |
| Strings per tracker | - | - |
| Max input current per tracker | - | - |
| European efficiency | 98.2 % | 98.2 % |
| Max efficiency | 98.5 % | 98.5 % |
| CEC efficiency | - | - |
| Battery input | - | - |
| Battery voltage | - | - |
| Max charge current | - | - |
| Backup power | - | - |
| Weight | 103.0 kg | 103.0 kg |
| Weight per kW | 1.0 kg/kW | 1.0 kg/kW |
| Dimensions | 755x1109x346 mm | 755x1109x346 mm |
| Ingress protection | IP65 | IP65 |
| Cooling | forced-air | forced-air |
| Noise | - | - |
| Max operating temperature | 65 °C | 65 °C |
| Wi-Fi | Yes | Yes |
| Ethernet | Yes | Yes |
| Arc fault protection | Yes | - |
| Integrated DC switch | Yes | Yes |
| Warranty | - | - |


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Source: https://comparepv.com/compare-inverters/fronius-international-fronius-tauro-eco-99-3-d-direct/fronius-international-fronius-tauro-eco-99-3-p-eco-1-mppt

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