Try not to leave the fridge door open for too long. When buying a new fridge or freezer, look for one which is labeled as an energy-efficient appliance. Laundry Try to use a full load in your washing machine or tumble dryer, but don't overload the machine. Use cold water for laundry whenever possible. In the Kitchen Match the pot to the ring or burner size you plan to use.
Electric kettles are cheaper than using electric stoves for boiling water.
Don't boil more than you need, but always cover the kettle element. When baking, whenever possible fill the oven to capacity. This saves energy. Some foods freeze well - you can cook more than your immediate needs of these foods, and freeze the rest for later. Don't open the oven door unnecessarily when baking or roasting.