72 w = 100 w. Save 28% in energy use compared to a 100 watt bulb. Saves energy. Bright white light. Instant full brightness. Dimmable. Brightness: 1490 lumens. Estimated Energy Cost: $7.92 per year. Energy Saver Halogen: Halogen technology helps save energy. Uses 28% less energy then a standard incandescent bulb with equivalent light output. Standard Incandescent: Original technology used to provide light by heating a filament. Lighting Facts per Bulb: Brightness: 1490 lumens. Estimated yearly energy cost: $7.92 based on 3 hrs/day, 11 cents/kWh. Cost depends on rates and use. Life: Based on 3 hrs/day: .91 years. Light Appearance Warm: 3000 K. Energy Used: 72 watts. Average life 1000 hours. 120 volts. Compliant with 2012 energy regulations. Made in China.