GE Lighting 85382 Energy Smart 10-Watt (40-watt replacement) T2 Spiral CFL — 580 Lumens, Medium Base, 1-Pack

Replaces a 40-watt bulb while drawing only 10-watts and producing 580 lumens of cozy, relaxing light. Estimated life is 11.0 years when used 3 hours per day. Annual energy cost is about $1.20 based on 3 hours per day at $0.11 per kWh, and you can expect approximately $39 in energy savings over the bulb’s lifetime using the same usage assumptions.