I got a little miner rig set up in my little room. My bill came home and its through the roof. Estimate $520 in power bill.
I got 15 gpus all running some in different location and 2 inline fans. 3070 n 3080.
I gotta pay rent too. In Ca. Bill From pg and e. At least I have money left over to keep in my piggie crypto bank.
I recommend to have power meter to monitor the electricity you draw from your mining rigs. I use a 2 Power Distribution Unit (PDU), this model :
https://www.amazon.ca/gp/product/B076MJMDLN/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 You have a PDU Remote Management you can use on your laptop or PC to monitor all the stats and it's connected via your LAN (WiFi).
If you a buy a PDU you must be sure to buy the model for your electricity circuit for instance 120V/20A or 240V/30A.
I think it's pretty vital to have that so you can be sure to stay under the 80% capacity and also the voltage sag (if your wall socket is 240V and 20A, you have to take 220V multiply by 20A which equals 4400 Watt and you apply 80% on that which is 3520 Watt which you should not go above that for that to stay safe and avoid voltage sag).
Also with PDU you know exactly how much you pay per day of electricity which is really important when you mine to know if you are profitable. Here for instance on my PDU Remote Management:

I entered by electricity cost, here in Québec it's 0.07 Kw/h and you see on the column "Interval Cost (Unit)" it's the total cost for the day for that PDU. So I easily calculate my electricity cost like that.