light fixture savings calculations

these calculations display your estimated savings based on assumptions below

for customized calculations enter your own data in the green fields

average incandescant fixture
cost per kilowatt hour
light fixture use per day hours
Rated Lifetime hours

how your savings are calculated

step 1 find the power draw difference

100 W incandescent - 26 W this fixture = 74 W saved

step 2 determine energy usage over the life of this bulb

74 watts * 10,000 hours / 1,000 watts per kW = 740 kWh lifetime savings

step 3 find the lifetime energy cost savings

740 kWh * $0.118 = $87.32

step 4 find savings per year

5 hours per day * 365 days per year = 1,825 hours per year

1,825 hours per year / 10,000 lifetime hours = 18.25 % of bulb life used per year

18.25 % * 740 kWh lifetime savings = 135.05 kWh yearly savings

18.25 % * $87.32 lifetime savings = $15.94 yearly savings

Savings calculations are presented as an example of potential savings; actual savings may vary based on use, utility rates and other factors. Calculations are based on national averages and assumptions and may be adjusted for a more accurate estimate of individual savings. While EnergyEarth strives to provide the most accurate information, we cannot guarantee the savings displayed.