I can just about guarantee if you were racking up $2500 in electric, now your electric bill will be closer to $100-$175 or so. Only thing that will go up is your gas if the furnace if it is gas, but you can bet that you will still be under the $1k mark with both.
I have a neighbor right now that has had his electric shut off due to him not being able to pay. He has never had gas as the previous owners converted it over to propane and this guy can't afford the upfront payment needed to get new tanks.
Anyways, the first year he was there he went door to door trying to borrow electric heaters. Up until the electric got shut off that is what he used to heat his place. Now he has a orange extension cord running to his neighbors shed, and from you can see form the street he has 1 lamp on, the TV, and his computer with roadrunner...the irony I tell you can't afford to have electric or gas but can afford the cable bill.
My wife was saying how she felt bad for them and wanted to get their electric turned back on as we know how it it to not be able to pay the bills. But like I told her if you can afford the cable you can afford to work out a payment plan with the utility company, especially our electric company they are pretty decent. And if this yuts couldn't get any hep from liheap I am guessing he already blew the help that was available.
Anyway, me and my neighbor have sent messages to the electric company complaining but they have done nothing. It wouldn't bother me but if what I seen him carting in his house the other day is a sign this guy is about to become a real big fire risk as he just brought home 4 brand new electric space heaters from wally-hood. That and the kerosene he got caught stealing form my neighbor, I got my rump in gear and went and bought some new smoke detectors, the kind that are interconnected so if one goes off they all do and they have battery backup so hopefully nothing will happen but if it does I want enough warning to get my wife, and my aminals the hell out of dodge.
But anyways you are right, electric space heaters are not meant for heating a home they are meant for small camping trailers and personal heating like to keep on your desk at work or something.