Switching lights off when leaving the room is a simple thing you can do to prevent excess energy use, but did you know that a lot of appliances don’t fully power down when they appear to be ‘switched off’? TVs, DVD players, microwaves and ovens (to name a few) all go into a standby power mode rather than powering down, and this still draws electricity. By turning the appliance off at the wall you can prevent this and save on your electricity bill.
And for appliances such as toasters and kettles, which don’t have traditional off switches, you can unplug these at the wall for the same effect. They’re also safer this way too. And don’t forget chargers either. Having them just sit plugged in when not in use uses energy that you have to pay money for.