GE Lighting 77123 Energy Smart CFL 3-way 13/19/26-Watt (100-watt replacement) 600/1150/1750-Lumen T3 Spiral Light Bulb with Medium Base, 1-Pack 30/70/100-watt replacement uses only 13/19/26-watts 600/1150/1750 lumens providing fresh, energizing light Lasts 9.1 years based on 3 hours per day usage Estimated yearly energy costs $1.57/$2.29/$3.13 based on 3 hours per day $0.11 per kWh $136 in energy savings over the life of the bulb based on 3 hours per day usage