Something in my house is sucking a *lot* of energy and I would like to find it and make it stop doing that. Anyone have specific recommendations for multi-circuit power-usage-tracking devices? (I have 13 240V and 18 120V circuits across three panels, suggesting I will probably need three such devices; the most populated panel has 10 120V and 2 240V.)

Other requirements: ideally #homeassistant compatible, not internet based (currently have devices on zwave and non-internet-facing wifi, adding zigbee soon for unrelated reasons), works with normal US split phase power. Assume I am a reasonably competent electrician and am comfortable putting a current transformer around a wire.

#homeautomation
@emily this happened to me, and I found out that you can listen to your meters broadcast of usage with a $40 device.I used this + HA to figure out what it was by systematically turning off sections of breakers till I found out I left my heat tape on all summer 🤦https://www.rtl-sdr.com/reading-electric-meters-with-rtl-sdr-and-homeassistant/
Reading Electric Meters with RTL-SDR and HomeAssistant

Over on his blog Jeff Sandberg has posted a writeup detailing how he combined RTL-SDR, rtl_amr, and HomeAssistant to decode wireless data from his Itron power meter, and create useful graphs showing his US home's power usage. In the post, Jeff explains how he uses an RTL-SDR Blog V4, HomeAssistant, EMQX, and rtl_amr to receive and plot the data. The RTL-SDR and rtl_amr software receives and decodes the wireless Itron electricity meter data packets, and then EQTT passes the data to HomeAssistant for logging and plotting. Jeff also notes how he used NodeRed to correctly automate the summer and winter

rtl-sdr.com