Disclaimer: I am located in central europe, so this may or may not apply for you.

In our region, typically every energy company and several environmental NGOs offer a service to borrow an energy meter for free of with a very small fee. Like this one: https://www.swm.de/privatkunden/kundenservice/energieberatung/strommesskoffer.html (it's in german, but just have a look at the pictures) Usual procedure is, you write to them and they give you date and time to pick up the equipment, and a week or two later you return the stuff.

There are meters for usual plugs, but there are also clamp-on-meters, which allow you to measure power consumption of directly wired appliances (e.g. if you suspect your ceiling light to run a server cluster up there).

IMHO this is the simplest, cheapest and most accurate way of having a power consumption survey in your home.

Disclaimer: I am located in central europe, so this may or may not apply for you.

In our region, typically every energy company and several environmental NGOs offer a service to borrow an energy meter for free or with a very small fee. Like this one: https://www.swm.de/privatkunden/kundenservice/energieberatung/strommesskoffer.html (it's in german, but just have a look at the pictures) Usual procedure is, you write to them and they give you date and time to pick up the equipment, and a week or two later you return the stuff.

There are meters for usual plugs, but there are also clamp-on-meters, which allow you to measure power consumption of directly wired appliances (e.g. if you suspect your ceiling light to run a server cluster up there).

IMHO this is the simplest, cheapest and most accurate way of having a power consumption survey in your home.