Line dry -- like grandma used to do.
Dry your clothes on a laundry line rather than throwing them in the dryer. Clothes dyers are the third-largest energy users in the home, behind the refrigerator and washing machine, costing more than $100 a year to operate, according to Project Laundry List.
Drying your clothes on the line can save you as much as $10 a month, said Brad Stroh, co-founder of Bills.com. Laundry lines vary in cost, from about $5 for a simple rope line to $500 or more for deluxe models.