When I was full timing in my previous unit, my largest bills were summertime never exceeding 60.00 at .11 KWH from SCE&G.
Winters around 30.00 to 45.00.
I ran the a/c in the summer, you have to if you live here. Refrigerator on electric, laptop pretty much stayed on and watched tv with satellite receiver in the evenings and weekends.
I also used two electric heaters, one took care of it most of the time, if it did get cold I ran one on high and one on low.
I cooked most meals including microwave usage as well.
The site I was in during this period was shaded in the most of the day helping with keeping cool.
I had metered electric, I read the meter myself and looked up the rate from the power company. I knew by the end of the month what my electric bill would be before it ever came.
In summer I would turn the a/c up to 80 during the day and turn it back down to 75 when I came in from work and would bring it down a few more degrees after dark to cool down for sleeping.
It all depends on what you use and how you choose to use it.
My experience with cost was about the same as Dutch 12078.