No, I am not talking about some high-tech electronic thing I did. Several months ago we switched the entire house over to LED lights. It took over a hundred light bulbs and a couple hours' time to accomplish this project, but it was worth it.
I was an early adopter of CF bulbs, back when it cost over $10 for each one. They probably paid for themselves quickly because at the time I was a Southern California Edison customer. SoCal Edison probably has the highest electricity rates on the planet.