Fronius GEN24 (Local)

For Fronius PV systems using a GEN24 inverter, a Fronius Reserva battery, and the Fronius Smart Meter IP, this app connects your system directly to Homey over your local network. Fast, private, and without any cloud dependency. Important: This app is specifically designed for the newer Fronius Smart Meter IP and the Fronius Reserva battery. Other devices connected to a Fronius GEN24 inverter, such as BYD batteries or older Smart Meters, may report correctly but are not officially supported. Features - Live Energy Flows: Real-time data for PV production, house load, grid import/export, and battery power. - Battery Details: Monitor State of Charge (SOC), temperature, voltage, and energy flow. - MPP Tracking: Individual data for MPP1 and MPP2, including voltage, current, and power. - Experimental MPP Tracker Device: Optional diagnostic device for special multi-inverter setups. It reads tracker data directly from a specific inverter IP address, always uses DeviceId 1, and shows an estimated tracker power. This device is not used for Homey Energy and does not represent total solar production. - Grid Monitoring: Three-phase monitoring (L1, L2, L3), including voltage, current, power, and frequency. - Advanced Statistics: Daily and monthly KPIs for Today, Yesterday, Two days ago, Current Month, Last Month, and Two months ago. Includes load, PV, grid, battery flows, autarky, self-consumption, and data coverage. - Energy Balance Device: Period-based energy flow analysis as percentages for PV, grid import, battery discharge, load, grid export, battery charge, totals, difference, and data coverage, with weighted and unweighted logic. - Savings Tracker: Estimated savings based on the Luxembourg reference power threshold. - Efficient Aggregation: Local statistics engine with RAM polling, 15-minute persistence, and 90-day retention to minimize flash wear. - Homey Energy: Full integration with the Homey Energy Dashboard for the supported energy devices. - Multiple Devices: Support for multiple inverters and smart meters where available through the local Fronius API. Setup & Pairing 1. Install the app. 2. Open App Settings and enter the IP address or hostname of your main inverter. 3. Set the desired polling interval, for example 5–10 seconds. 4. Optional: Set the Luxembourg reference power in kW. Changes apply from the start of the next month. 5. Save settings. 6. Add your devices in Homey: Solar, Battery, Grid, Flow, Statistics, Energy Balance, or MPP Tracker. Configuration & Tools - Invert Values (+/-): Adjust the sign of power values in device settings for correct Homey Energy behavior. - Data Management: Use App Settings to reset statistics, export daily CSV logs, or create full JSON backups. - Energy Dashboard: Include or exclude specific devices to prevent double counting. - MPP Tracker: Use only for special diagnostic or multi-inverter scenarios. It has its own inverter IP setting and is intentionally kept separate from Homey Energy. Requirements - Fronius Solar API: Must be enabled on the inverter: Settings -> Services -> Solar API -> ON. - Static IP: Highly recommended to prevent connection loss. Development & Feedback Developed primarily for the Fronius GEN24, Fronius Reserva, and Fronius Smart Meter IP. Feedback for other hardware is welcome, but compatibility cannot be guaranteed. Disclaimer This app is not affiliated with Fronius International GmbH. It uses the publicly available Fronius Solar API. A complete user guide can be found at the developer website, see the bottom of this page.