I've been mulling over what kind of home energy monitor to install at my house for a while now, and finally settled on the IoTaWatt. This is an open source software/hardware solution that requires installing up to 14 current transformers in your electrical panel, allowing for monitoring of individual circuits. Of the 28 circuit breakers I currently have filled in my panel, the 12 CTs (2 are used by the mains power feed) cover 90+% of my energy usage, giving me a great picture of what's drawing power in my house. It also allows output to a number of web services for powerful data visualization.
Installing the IoTaWatt required opening up my electrical panel and attaching 14 current transformers, along with making a storage/display box external to the panel. Other monitors like the Sense are more straightforward to install as they only have two current transformers to install and can be left in the panel; however, their auto-sensing feature that is supposed to identify specific appliances, according to reviews I've read, isn't very accurate.
Full disclosure, I am not affiliated with IoTaWatt, and I purchased all of these items myself.
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Негізгі бет Home Energy Monitoring with IoTaWatt | Physical Install and Initial Setup
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