Yes I presume a lot. Could his work be ok with the increased cost of hosting a SP35? Sure. He could be trading his services for the hosting of his equipment. In this case it could be a good exchange for both parties. If everyone is aware of what is going on and ok with it then I say more power to him and why not buy a second SP35 and have them foot the electric bill. If they really don't know and he values his job then better make sure they are aware so he doesn't get fired. All I am saying.
If the CFO is talking about a $600 increase for the electricity bill of a TEST RACK, I would not want to work there. The parking lot lighting is more than that usually, and no one remembers to turn it off.
So what you are saying then is if they don't notice or don't care then it is ok to steal $600 a month from work.