I know this sounds high, and it probably is a little, but this has been a very cold and windy winter. With the evenings hovering around 0 degrees every night and wind chills somewhere between 10 to 20 below. The heat never shuts off.
Some of the things that will spike your bill this time of the year. Christmas lights (we forget about them) extreme cold and wind with no let-up, it's been one of the coldest winters in a long time. Now tack on your hot water heater, (eletric water heaters are the most expensive form of hot water) More laundry because of heavy winter cloths, longer drying time. Lights that seem to be on all the time.
All these contribute to higher bills this time of the year especially in the northeast.
Hopefully this cold spell will end soon. My last bill ran about $160 a little high but December and January usually runs high. My bill usually runs just under $100. I heat with oil, forced hot-air so the blower is on more, I also have electric hot water, probably half my bill, electric stove and I run a heater in the fish pond. I pre-pay my oil so my price is set. Heat usually run me about $500-600 a year, I'm sure it will be more this year.