100-Watt Equivalent T3 Spiral Non-Dimmable E26 Base Compact Fluorescent CFL Light Bulb, Soft White 2700K (12-Pack)Designed to last for up to 10,000 hours, the Feit Electric 23 Watt (100W) Household CFL Light Bulbs (12 Pack) help deliver 1,600 Lumens of light using the equivalent of 100 Watt bulbs. The mini twist CFL bulbs offer soft white light and can be used indoors or outdoors. These CFLs use up to 77% less energy and lasts up to 10 times longer than standard incandescent bulbs. Brightness: 1,600 lumens Estimated yearly energy cost: $2. 77 (based on 3 hours