Do what I do and set delilvery address as your work address. I have all my bills delivered to my office instead of home

Plus there's theres the bonus that you get a nice ASIC delivered to work so screw around with in the afternoon before going home
Leave it at work. Free power!

FYI, using work resources for personal gain is generally frowned upon, profiting directly from your employers electricity bill will most likely be a resume generating event if you are caught.
Ask permission for something vague and keep your head down,
then you can get away with it.
It's...um...a space heater. It's cold in my office.