I'm planning to integrate the newly installed smart meter into my home assistant to track my electricity consumption. My challenge is that the smart meter is in the basement and I live in an apartment house. The WLAN is not sufficient to cover several floors.
As the measurement data requires little bandwidth, my current idea is to use LoRa for the radio protocol. The range of LoRa can be several kilometers, which is sufficient for my application.
As hardware, I plan to use two ESP32 with LoRa module. One will be positioned in the basement and will have an IR read sensor to read the smart meter. The recorded data is then sent via LoRa to the second ESP32, which is located in the appartment and is connected via WLAN. This ESP32 receives the measurement data and sends it on to Home Assistant via MQTT.