Turn off and unplug any electrical appliances when they aren't in use. Dont' have your place lit up like a airport runway strip, if you aren't in a room, turn off the light.
Also turn appliances OFF not to standby. Walk around the house & look at all those little red lights telling you "wasting power".
Replace incandescent lights with the new fluoro types: you can get compact fluoros now that replace those little halogen lamps that eat power.
h9k aka "Prince of Darkness"