TCP 48909Y CFL SpringLamp - 40 Watt Equivalent (only 9W used) YELLOW Spiral Bug Light Bulb TCP CFLs use 75% less electricity than their Incandescent Counterpart, while maintaining the same Light Output Lifetime: 9 years (based on average usage of 3 hours/day) Color: Yellow This bulb has the light output of an incandescent 40 Watt Equivalent light bulb, but only uses 9 Watts of electricity Switching from your incandescents to CFL will save you $34 over the life of this item