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Whole home energy monitor
(infosec.pub)
Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io
I personally like the circuit setup boards. Running an esp32 with esphome. Can be configured for anything you want them to do. On virtually any size or voltage system.
I setup up one system on an industrial 500A 3ph 480V site to track phase imbalance and trigger balancing loads.