# Energy Don't use air conditioning in summer when relying on a fan provides enough of a relief. Install solar panels on your house. Switch to a 100% renewable energy provider. Dry your wet clothes on a clothes line or drying rack. Don't use a clothes dryer. Don't iron your clothes. Don't buy clothes that require ironing. Don't pour more water into a kettle than you actually need. Turn off lights when you don't need them. Unplug appliances and devices when not in use. Wash clothes less often. There's no need to wash clothes after every use (unless they are dirty or smelly). Only buy efficient appliances. Turn the heat off in the rooms of your house you're not using, and close them off. Use LED light bulbs only. Don't use incandescent or fluorescent light bulbs. Don't put warm food in a refrigerator. Let it cool down outside first. Dry your hair with a towel instead of using a hair dryer, especially in summer or if you have short hair. Wash dishes by hand with cold water (at least in summer). At night, turn off lights and save some electricity if darkness does not interfere with what to have to do (e.g. listening to music, talking on the phone). Turn off the engine of your car when idling. Don't use thick towels in winter: they can take a long time to dry. Use thin towels, instead.