Compact Fluorescent Light Bulbs - Energy-Efficient Lighting Options #1962266 (License: Personal Use)

The image displays two standard compact fluorescent lamps (CFLs): a multi-tube U-shaped design with a bayonet cap (B22) on the left, and a single-spiral tube with an Edison screw base (E27) on the right. Both feature white phosphor-coated glass tubes mounted on white plastic housings over metallic bases, typical of household energy-saving lighting from the 2000s-2010s. These bulbs were widely adopted before LED dominance for their lower power consumption versus incandescent equivalents.

Used on energy-efficiency guides, sustainability blogs, product comparison pages, or historical tech retrospectives; targets users researching lighting upgrades, retrofits, or environmental impact of household appliances.