So this tip is good for saving energy, but also for making sure when you cook or bake, what you are making will turn out perfectly!
Check your oven temperature. Test the oven temperature to be sure that the settings match the actual temperature. You can get an oven thermometer for a few bucks at your local store or pick one up over here at Amazon. If the actual temperature is too high, you will use more energy than needed. Your food may also not turn out as anticipated!