GE Lighting 60308 Energy Smart Bright From The Start CFL 25-watt 1500-Lumen A23 Light Bulb with Medium Base, 1-Pack 100 watt replacement uses only 25 watts 1500 lumens providing strong, vibrant light Lasts 5.5 years based on 3 hours per day usage Estimated yearly energy costs 3.01 based on 3 hours per day 0.11 per kWh 6500K cool, bluish color tone for active spaces