1000sq/ft upstairs and basement. Added 3/4" styrofoam insulation before recladding with vinyl. Attic got another 8-10 inches of blown in insulation. High efficiency furnace, hot water, gas dryer and 440 sq/ft detached garage all on NG. BBQ is NG but that doesn't take much. Just about all bulbs in the house are LED. Counter top stove is 1/2 induction 1/2 radiant although we rarely ever use the radiant side. I think the biggest saving was switching the dryer to gas, the electric bill dropped by about 30%.
I would have to say last winter being by far the coldest I can ever remember in the houe, hydro jumped to about $120 for 2 months, but the furnace was really running and I had the truck plugged in a lot.