I have a rack mount server, 3 "gaming" desktops, a mini dell, a ton of raspberry pis, and a few miscellaneous devices running. My bill is $10 more than my broth

I have a rack mount server, 3 "gaming" desktops, a mini dell, a ton of raspberry pis, and a few miscellaneous devices running. My bill is $10 more than my brother who's a nurse and has 2 computers, a Switch, and a TV. I know in theory the electric bill could/should be way higher, but I just haven't found this to be the case.