Day Light: Use natural light as much as possible.
Un-Plug: Start un-plugging appliances that are not in use instead of just switching them off because some – in stand-by mode – continue to use some electricity.
Energy Star: Buy appliances with an energy star label on them. Today, most appliances indicate the level of energy efficiency. You may pay a bit more in the beginning but save a lot in the long run.
CFL: Switch from old halogen bulbs to new Compact Fluorescent Lights; these can be almost 80% more efficient than conventional bulbs.
Think big: Use one large light bulb instead of a few small ones. One 100-watt bulb uses less energy and gives off more light than two 60-watt bulbs.
Washing Machines: A front-load washing machine uses less electricity (and water) than a top-load.
Food: Before putting hot foods into the refrigerator, cool them to room temperature. Defrost food before you bake or microwave it. This uses 1/3 less energy than if you baked food that was still frozen.