[App][Pro] Fronius GEN24 Local app

Apps
1

Hi everyone,

I’m happy to announce the public release of Fronius GEN24 (Local) for Homey Pro.

This app connects to your Fronius inverter locally via LAN or WIFI (no cloud) and exposes live power values and energy counters to Homey, including Energy Dashboard integration.

Scope / compatibility note: This app was developed specifically for my own PV setup (GEN24 inverter, Fronius Reserva battery, and Fronius Smart Meter IP). It will likely work with other Fronius configurations as well, but there is no guarantee. Since I don’t have access to other systems for testing, I can’t promise future compatibility across all setups — however, I’ll do my best to keep it as broadly compatible and stable as possible.

What it does (local Fronius Solar API)

The app reads data from the inverter’s local Solar API endpoints (e.g. PowerFlow, Meter, Storage, Common Inverter Data) and updates Homey devices via one centralized polling engine.

Devices included

  • Solar (PV production + inverter details, supports multiple inverters via Device ID)

  • Grid (import/export live power + imported/exported energy counters)

  • Battery (SoC, power, voltage, temperature + charged/discharged counters)

  • Flow (custom “power flow” overview values for your own tiles/flows)

Energy Dashboard

  • Grid and Battery are integrated into Homey’s Energy Dashboard.

  • For Grid, the app reports import/export energy counters so “Today / Yesterday” etc. works correctly.

  • If your power sign direction (import vs export) looks inverted, there are invert sign settings per device (Grid/Battery/Flow).
    Note: Flow device settings only affect the Flow device display; Grid/Battery affect the Energy Dashboard live flow (and Battery counters).

Setup

  1. Ensure the Fronius Solar API is enabled on the inverter (local web interface).
    If the API is disabled, the app cannot retrieve data.

  2. Install the app.

  3. In app settings, enter the local IP address of your inverter.

  4. Add the device(s) you want (Solar / Grid / Battery / Flow).

Support (this thread)

This thread is also the official support thread. If you need help, please include:

  • Homey model + firmware (Homey Pro 2026)

  • App version

  • Which devices you added (Solar/Grid/Battery/Flow)

  • A short description + screenshot of the Energy Dashboard (if relevant)

  • A snippet of the app logs around the issue

If a test version is available, you can install it by opening the app’s Update history (or “Version history”) page and pressing the Test button.

I’ll keep improving stability and compatibility, but I’ll also try to bundle changes to avoid unnecessary review cycles.

Thanks to everyone testing and reporting issues — it helped a lot to harden the Energy Dashboard reporting and overall reliability.

— Pascal

Store link: Fronius GEN24 (Local) | Homey

2 Likes
2

The latest version is 1.0.7 but certification is still pending. You can download it by clicking on the update history and then clicking on the test button to the right of version 1.0.7

3

Placeholder 2

Preview: Local Fronius GEN24 integration for Homey (no cloud)
4

Dear Pascal,

Thank you for your excellent work and congratulations on the official release of Fronius Gen24 (Local)!

I have been able to test the app over the last few days and it runs superbly, delivering the relevant values via a local connection, i.e. without having to go via the cloud! Thanks to the latest update, grid values are now also available in the Energy Dashboard.

I will continue testing it over the next few days and report back!