If you want to save money on your electric bill immediately, as well as protect our environment. Switch your lighting in your home and business to energy saving compact flourescent bulbs. Compact flourescent bulbs typically use 1/4 to 1/3 the electrical energy that standard incandesent bulbs use and last up to 10 times longer than an incandescent lamp. An additional savings on summer cooling (air conditioning) due to the fact that regular incandescent produce heat up to 50% per energy used, compared to compact flourescent that produces far less heat which require less heat for your A/C unit to remove. Compact flourescent lamps fall into three different systems. 1) Integrated system, contains a lamp, base and ballast in a single unit, the entire unit is disposed of at the end of its life. 2) Modular system, contain a ballast in a screw in base with a replaceable lamp when the lamp is at the end of its life, simply replace the lamp with a new one and reuse the base. 3) Dedicate system, contain a ballast and lamp socket wired as part of the lighting fixture and use only a compact flourescent lamp matched to the socket and ballast contained within the light fixture. Limitation on using compact flourescent lamps outdoors in weather below 32 F (0 C) can be helped by using an enclosed fixture and by installing a low temperature ballast.