GE Lighting 24691 Energy Smart CFL 11-Watt (45-watt replacement) 400-Lumen R20 Floodlight Bulb with Medium Base, 1-Pack 45 watt replacement uses only 11 watts 380 lumens providing subtle, reassuring light Lasts 5.5 years based on 3 hours per day usage Estimated yearly energy costs $1.32 based on 3 hours per day $0.11 per kWh $22.00 in energy savings over the life of the bulb based on 3 hours per day usage