thisplace.com.au - Areas of Energy Savings

Practically all portable tools are very efficient users of electricity. Trigger switches ensure that the unit is only used when needed; but don't overload the tool by prolonged constant use.
Be sure your television, radio and CD player are off when no one is watching or listening.
Weather stripping on doors and windows is a sound investment to help maintain temperature control on heaters and air conditioners.
Exterior automatic lights fitted with sensors detect people coming within a predetermined range and switch on and off at adjustable levels.
Interior automatic lights - infra-red and movement control devices sense the entry of a person into a room. They switch the room light on and it remains in until the person leaves the area. This saves wasted energy switching lights on and off when not required.
Time switches can be preset to switch on/off appliances of lights to operate more effectively eg. security lights, swimming pool filters etc.
Photo electric switches automatically switch lights on when the light level falls, and switches them off when light level rises eg. night time/day time.
Extra low voltage lighting can be used for security/decoration in exterior applications. Eight 12 watt lamps (low voltage) cab adequately illuminate the front or rear area of the home (staggered and installed over a large area), and is more energy efficient than using the normal 150 watt floodlight.

Source: Energex Home Energy Efficiency Tips