Are you looking for additional inexpensive ways to reduce energy and water while washing clothes might consider the following:

• Wash full loads of laundry. Running a partial load uses the same amount of energy as a full load.
• Use cold water when possible to reduce energy consumption by your water heater.
• Don’t dry clothes excessively. Drying laundry excessively uses more energy and is hard on fabrics. Consider drying clothes partly in the dryer and then hanging them to dry the remainder of the way.
• Clean the lint filter after each load. Doing so keeps the dryer running efficiently. Also, periodically check the air vent and hose to prevent a fire hazard.