If you don't have double pane windows, get 1 mil clear plastic drop cloths at a hardware store and tape or tack them up over your windows so there is a layer of trapped air between the glass and the plastic. Also, put something at the base of doors to stop cold air coming in. Just these two things helped me immensely in cutting down my usage.
Electric ain't no bargain hereabouts. . . Stay warm and safe.
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