The primary application of GridMate is the detailed monitoring of individual electricity consumers or sub-circuits. In industrial and commercial facilities, there is often a need to monitor a large number of individual electricity consumers closely. Whether it is multiple high-power compressors in a factory, individual floors or even rooms in a hotel, servers in a data center, or countless other examples, valuable insights can be gained from monitoring these electricity consumptions separately rather than relying on the building's overall electricity meter. GridMate allows this data to be read remotely and transmitted to a centralised repository every 5 minutes for further analysis. The device ensures this data transmission using the industry-standard LoRaWAN network. This low-frequency radio data transmission network uses a specialised protocol that provides a long transmission distance and resistance to interference. Thus, it is possible to avoid the unnecessary costs of installing cables for meter readings while ensuring data collection from a large area or in an environment complicated by radio communications. A LoRaWAN network can be easily set up by installing LoRaWAN gateways. Although similar in size and installation complexity to a regular WiFi router, these devices provide much better signal transmission distance and stability than 2.4GHz and higher-frequency wireless networks. Such a LoRaWAN network created in a facility allows data collection from various other LoRaWAN sensors without additional costs. GridMate devices are suitable for high installation density due to their economic costs and compact size - they are only 22.5mm wide and mount on a standard DIN rail, making it easy to install many measuring points.