Hi all,
I’ve created a Homey app for the Fronius Wattpilot EV charger 
. It connects directly to your Wattpilot over your local network —
no cloud, no external services. Real-time monitoring, charging control, and solar power tracking, all from Homey.
App current version (beta): v0.0.106
https://homey.app/a/app/com.wattpilot/Fronius-Wattpilot/ Fronius Wattpilot | Homey
Local EV charger control with solar power tracking
What does it do?
This app connects to your Fronius Wattpilot (Home, Go, or any charger with Wattpilot firmware) via a local WebSocket connection. It
gives you:
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Real-time power, current, and voltage monitoring
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Charging control (current, mode, phases, force start/stop)
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PV surplus and grid power tracking
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Session energy tracking with configurable energy limits
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Error detection and reporting
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No cloud dependency — communication stays on your local network.
Features -
12 device capabilities — power, current, voltage, energy, car state, charge mode, phase mode, PV power, grid power, session energy
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8 flow triggers — car connected/disconnected, charging started/stopped/complete, error occurred/cleared, power changed
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5 flow conditions — is charging, car connected, charge mode check, power threshold, has error
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6 flow actions — set current (6–32A), set charge mode (Default/Eco/Next Trip), force start/stop, set phase mode, set energy limit
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Charging status widget — Fronius-style donut ring showing charge state with power source breakdown (solar/battery/grid), session
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timer, remaining time estimate, and error indicators. Dark and light theme.
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10 languages — EN, NL, DE, FR, IT, SV, NO, ES, DA, PL
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Secure local connection — PBKDF2 authentication with HMAC-SHA256 signed writes
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Zero npm dependencies — pure Node.js implementation
Supported hardware -
Fronius Wattpilot Home
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Fronius Wattpilot Go
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Other Fronius chargers with Wattpilot firmware
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Must be on the same local network as Homey
Changelog
Releases- v0.0.95 — Beta release for testing
Known issues- Not yet tested with real Wattpilot hardware — built and tested against a mock server that simulates the WebSocket protocol.
Looking for beta testers with actual hardware!
FeedbackThis is currently in beta and I’m looking for testers with Fronius Wattpilot hardware. I’d love to hear your feedback:
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Does it connect and authenticate correctly?
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Are power readings accurate?
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Any issues with charging control?
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Feature requests
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Flow use-cases
If you run into issues, please share your Wattpilot model and firmware version.
This app is a hobby project, built with a lot of curiosity, coffee, and late-night tinkering
I’m creating and maintaining it in my spare time, mainly because I enjoy it and love sharing it with the Homey community.
If you like the app and it makes your day a little easier, consider supporting the project with a small donation. It’s absolutely
not required, but always appreciated — and it definitely fuels future ideas and improvements
Thanks for using the app and being part of the community!
