90-Watt replacement uses only 23-Watt 1100-Lumens providing fresh, energizing light Lasts 13.7 years based on 3 hours per day usage Estimated yearly energy costs-Dollars2.77 based on 3 hours per day-Dollars0.11 per kWh -Dollars110.00 in energy savings over the life of the bulb based on 3 hours per day usage