CFL-LED dimmer savings calculations

These calculations display your estimated savings based on assumptions below

For customized calculations enter your own data in the green fields

bulb type



wattage per bulb watts
dimming percentage %
number of bulbs
cost per kilowatt hour
hours dimmed per day hours

How your savings are calculated

Step 1 determine the bulb wattage at percentage dimmed with number of bulbs used

15 watts x 50% dimmed = 7.5 watts per bulb

7.5 watts x 6 bulbs = 45 watts

Step 2 determine total power saved on hours dimmed

45 watts x 4 hours = 180 Wh daily savings

180 Wh / 1000 watts per kW = 0.18 kWh daily savings

Step 3 determine energy savings

0.18 kWh daily savings x 365 days per year = 65.7 kWh yearly savings

65.7 kWh yearly savings x 25 year life span = 1642.5 kWh lifetime savings

Step 4 determine money savings

0.18 kWh daily savings x $0.118 per kWh = $0.021 daily savings

65.7 kWh yearly savings x $0.118 per kWh = $7.75 yearly savings

1642.5 kWh lifetime savings x $0.118 per kWh = $193.82 lifetime 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.