Conserving energy is a big part of reducing your impact on the planet. Some ways to conserve energy in the kitchen include using as small as oven as possible. The larger the oven, the more energy it takes to heat it to the proper temperature. Glass and ceramic retain heat better than metal; switching will reduce the temperature as much as 25 degrees. When using the stove, make sure the burner fits the pan; an uncovered burner wastes heat. And always use a lid when heating items on the stove for the same reason.