Alfa by Sinapsi for Home Assistant (Marketplace integration)

Installs: 138 sharing analytics
GitHub stars: 21
Connection: Works locally
Upkeep: Updated in the last 6 months
Version: v1.13.10, October 2, 2026
Category: Energy, Meters and monitoring
Kind: Marketplace integration
Needs: Needs the Marketplace (HACS on 2026.10 and older)
Domain: sinapsi_alfa
Source: github.com/alexdelprete/ha-sinapsi-alfa
Issues: Report an issue

Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation.

About

Alfa by Sinapsi reads power and energy data from a Sinapsi Alfa energy monitoring device over the local network. It adds sensors for imported, exported and produced power and energy, including daily imported energy split by tariff band and averaged power values. Communication uses asynchronous Modbus, and the device accepts only one Modbus TCP client at a time, so the built-in Modbus package from Sinapsi must be removed first. Cumulative energy sensors restore their last value after a restart and ignore the zeroed readings a device can return, which keeps the Energy Dashboard from double-counting. Connection problems can raise repair notices after a set number of failures, and an optional recovery script can run when the device stops responding. Device triggers cover unreachable, not responding and recovered events, and setup is done in the UI.

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Supports

Works locally Talks to your devices on your own network. No vendor cloud in between.
Device triggers Its devices can start automations directly.
From the Marketplace Installed through the Marketplace, formerly HACS.
Actively maintained Its author released or pushed a change in the last six months.

Provides

Sensors

Setting it up

Install it from the Marketplace and restart Home Assistant, then add it under Settings, Devices and services.

Alfa Connection Configuration

Device name (used for sensors' prefix)
IP or hostname
TCP port
Polling interval (min: 30s max: 600s)
Connection timeout (min: 5s max: 60s)
Skip MAC detectionEnable for VPN connections. Uses host-based device ID instead of MAC address (faster startup).

Reconfigure Alfa Connection

Device name (used for sensors' prefix)
IP or hostname
TCP port
Skip MAC detectionEnable for VPN connections. Uses host-based device ID instead of MAC address (faster startup).

After setup

Polling interval (seconds)
Connection timeout (seconds)
Enable repair notifications
Failures before notification (1-10)
Recovery script (optional, runs when device stops responding)

Texts from the code of alexdelprete/ha-sinapsi-alfa.

Entities

SensorsPower Imported, Power Imported Avg 15m, Power Exported, Power Exported Avg 15m, Power Produced, Energy Imported, Energy Exported, Energy Produced, Daily Energy Imported F1, Daily Energy Imported F2, Daily Energy Imported F3, Daily Energy Imported F4, and 15 more

Troubleshooting

DiagnosticsDownloads a diagnostics file to attach to a bug report.
Repair noticesNotices it can show in Settings, Repairs:Is warming up

From the README

This project is not endorsed by, directly affiliated with, maintained, authorized, or sponsored by Sinapsi
Installation/Configuration through Config Flow UI
Sensor entities for all data provided by the device
Translated sensor names: Sensor names displayed in your Home Assistant language (supports German, English, Spanish, Estonian, Finnish, French, Italian, Norwegian, Portuguese, and Swedish)
Options flow: Adjust polling interval, connection timeout, and repair notification settings at runtime
Reconfigure flow: Change device name, host, port, and skip MAC detection
Repair notifications: Connection issues are surfaced in Home Assistant's repair system with configurable threshold
Recovery notifications: Detailed timing info (downtime, script execution) when device recovers
Energy statistics protection: Cumulative energy sensors are guarded against the spurious zeros a device can return after a restart, which would otherwise be double-counted on the Energy Dashboard
Device triggers: Automate based on device connection events (unreachable, not responding, recovered)
Recovery script: Optionally execute a script when connection failures reach the threshold
Diagnostics: Downloadable diagnostics file for troubleshooting
All changes apply immediately without Home Assistant restart