TCP 4894241k CFL Pro A - Lamp - 150 Watt Equivalent (42W) Cool White (4100K) Full Spring Lamp Light Bulb Replaces standard incandescent 150-watt light bulb but only uses 42 Watts! Compact Flourescent Bulbs use 75% less energy with same light output Lifetime: 8+ years Uses 42 Watts of electricity Not Dimmable