CFL bulbs, or Compact Fluorescent Lamps, are energy-efficient light bulbs that use a gas-filled tube to produce light. They consume about 70% less energy than traditional incandescent bulbs and last up to ten times longer, making them a popular choice for both homes and businesses. These bulbs come in various shapes and sizes, fitting standard light fixtures. While they take a moment to reach full brightness, their long lifespan and reduced energy consumption contribute to lower electricity bills and a smaller environmental footprint compared to conventional lighting options.