Use wemo switch to turn on space heaters at 4:30 am Mon, Tues, We'd, Thur, and Fri.
My house uses oil heat. To offset costs, I use two space heaters. One is located in the kitchen and the other the living room. Both turn on for two hours in the morning, starting at 4:30 am. When I wake up the house is warm. This lets me dress for work, happily.