Compact fluorescent lamps (CFLs) are the squiggly light bulbs that were very popular about a decade ago. While they've lost market share to LEDs, they are still available in stores, and there are ...

Their replacement equivalents, compact fluorescent lightbulbs and light-emitting diode bulbs, are bright, use 75 to 80 percent less energy, and can save you $60 to $125 dollars per bulb in energy ...