Screw-In Lighting Cost Calculator Efficient
Lamps		 Old
Lamps
Lamp Information
Lamp Type (Select from Box at Right)
Number of Lamps
Lamp Wattage (W)
Lamp Use
Operating Hours per Day (h/day)
Operating Days per Year (d/year)
Utility Cost
Choose State (Optional)
Electric Cost per kWh ($/kWh)
 
Results Efficient
Lamps		 Old
Lamps
Electric Energy Rate (kW)
Annual Energy Consumption (kWh)
Annual Cost $ $