Mine is ~26w, two arm based SBC jetson nano and an rk3399 NanoPC T4, three laptop usb hdd, a 1gig switch and one of my mesh routers all connected to one smartplug. Running Home Assistant, Frigate, PhotoPrism, DoubleTake/Deepstack, Nginx reverse proxy.

Cost £0.27/Kwh 2470.026*0.27=£1.33 per week

I use Home Assistant already. They have a plugin for glances. I guess all I’m interested in is cpu temp and load. Any changes =somethings up