Fill it up: Washing full loads will reduce the amount of energy and water required to clean your dishes. One full load costs less to run than two smaller loads.
Dry them for free: Use the air dry function on your dishwasher.
Skip the pre-rinse: Don’t use the pre-rinse cycle on your dishwasher. It is not necessary with today’s dishwashers. Skipping it can save as much as 20 gallons per load or 6,500 gallons/year.