Whether in our coach or the S&B, our usage costs us around $125 to $150 per month. Our lifestyle doesn't change between the two. In the coach we cook all electric, we use primarily electricity for the water heater and heat (Aqua Hot) and it is on 24/7. We also use the dishwasher when it gets full and most of our laundry is done in our on-board stacked washer dryer. A/C when needed and heat pumps when the temperature is suitable. Our only "conservation" is our thermostats are set for 68 heat and 78 A/C, we turn off lights when not needed (both the house and coach are all LED lit-our bill at home dropped ~$30 after the conversion), and we wait for full loads for the clothes and dish washers. You would think the coach, being smaller would consume less, and it does based on kWh, but, you usually pay almost twice as per kWh at metered campground hookups as compared to what the utility companies are actually charging. The house, in our case, comes out the same despite the difference in rates because we don't have A/C and our heat is an oil furnace that is supplemented by wood stoves.
Our home is in western PA and we winter in southern AZ. It does drop below freezing, frequently, at night, in Benson, but, the days are crisp and cool (50's and 60's with some 70's thrown in) and no snow.
