Don't worry about tomorrow. Plan for it and you won't have to worry.

A few more energy saving tips...
Replace outdoor lights with motion-detector lighting. - Lights that are not being used will stay off and save energy.
Run your dishwasher only when it's full. - Reduced usage will save energy and keeps your energy costs down.
Keep your freezer stocked (with all the food you bought on sale!). - It's more energy-efficient when full.

And this from recent experience...Don't leave your back door open all night like I did Tuesday! I walked downstairs Wednesday morning and it was freezing cold in the living room. I had taken the garbage out and forgot to check the door before I went to bed. Oops!