GE 2PK 20W Day CFL Bulb 75 watt replacement uses only 20-Watt 1200 lumens providing fresh, energizing light Lasts 9.1 years based on 3 hours per day usage Estimated yearly energy costs $2.41 based on 3 hours per day $0.11 per kWh $60 in energy savings over the life of the bulb based on 3 hours per day usage