NAME: _______________________________________________ DATE: _____________ CLASS: ______________ HOME ENERGY AUDIT: LIGHTING WORKSHEET Created for the NTEP II program on behalf of the National Renewable Energy Laboratory in Golden, Colorado. How much energy/money can be saved by replacing our light bulbs with Compact Fluorescent Lights?
Each energy efficient CFL bulb saves 50 watts, how many watthours could you save if you replaced all bulbs with CFLs?
Divide your answer by 1,000 since there are 1,000 watthours in a kilowatthour (which is how your utility bills you)
Take this answer and multiply it by 365 (the days in a year) to calculate the Kilowatthours saved in a year.
To calculate the amount of money your family could save in a year, take the Kilowatthours saved in a year times the cost per Kilowatthour ( in Denver it is $.089).
In addition to saving money, we use less electricity! Using less electricity means producing less greenhouse gases. If we assume that every kilowatthour saved removes 2 pounds of carbon dioxide from the air, how much greenhouse gases could be prevented? Kilowatthours saved in a year X 2 pounds = _______________pounds of greenhouse gas
