If you're in the market for a new set of pots and pans, consider two things when shopping: Look for copper-bottomed pots and pans. Copper is the best conductor of heat and creates an even and more efficient cooking surface. Also, test the lids on your new pots to make sure they are tight fitting. Tight lids help shorten the overall cooking time and save you energy. And one more bonus tip to save energy at the stove: Be sure the reflector pans inside are spotless. Clean reflectors on electric stovetops help reflect heat upward when cooking, which improves efficiency.