Light Socket Engageable Energy Saving Device

An energy saving apparatus adapted for insertion between the center conductor of a lightbulb, and the center electrical contact of a light bulb socket. The device features an electrical component for varying or decreasing the amount of electrical current reaching the light bulb. The electrical component is situated in a central aperture of a collar and is surrounded by the collar which centers it in position within the light socket between the center conductor and the electrical contact of the socket. The collar has an exterior circumference which may be varied to adapt it to fit within a plurality of different sized light bulb sockets.