TCP 4892341k CFL Pro A - Lamp - 100 Watt Equivalent (23W) Cool White (4100K) Full Spring Lamp Light Bulb Replaces standard incandescent 100-watt light bulb but only uses 23 Watts! Compact Flourescent Bulbs use 75% less energy with same light output Lifetime: 8+ years Uses 23 Watts of electricity Not Dimmable