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Comparison Chart
LED Lights vs. Incandescent Light Bulbs vs. CFLs
Energy Efficiency 



Life Span (average) 
50,000 hours 
1,200 hours 
8,000 hours 
Watts of electricity used 
6  8 watts 
60 watts 
1315 watts 
Kilowatts of Electricity used 
329 KWh/yr. 
3285 KWh/yr. 
767 KWh/yr. 
Annual Operating Cost 
$32.85/year 
$328.59/year 
$76.65/year 
Environmental 



Contains the TOXIC Mercury 
No 
No 
Yes  Mercury is very toxic to your health and the environment 
RoHS Compliant 
Yes 
Yes 
No  contains 1mg5mg of Mercury and is a major risk to the environment 
Carbon Dioxide Emissions 
451 pounds/year 
4500 pounds/year 
1051 pounds/year 
This calculator has some a basic input parameters that are preset with some values that you can adjust based on your application. Here is a definition of the input parameters.
a. Current Lighting Watts per Tube (W): your current wattage consumed per Tube.
b. LED Lighting Watts per bulb: the wattage of LED Bulb will be replacing your current bulbs.
c. Total Number of Fixtures or Bulbs: the total count of bulbs you are looking to replace.
d. Daily Operating Hours ; the average number of hours your current lighting is used a day.
e. Working Days Per Month: the total number of days you use your current lighting per month.
f. kWh Cost: the kWh cost you are charged on your utility statement.
g. Maintenance & Ballast Monthly (perBulb): Your average maintenace cost per bulb per month.
h. HVAC Load Monthly Cost Factor (%): Your HVAC Monthly Load Cost Factor or the amount
i. you spend on HVAC as a percentage of your total electrical usage per month.
j. Cost per single LED Bulb: The cost of a single LED bulb you are looking to replace your current lighting.
For Example if you use a Flourocent Tube Light of 50 Watts and replaces it with LED Tube Light of 20 Watts then your Financial and Environment benefits are as under;
Current Lighting Watts per bulb (W)  50 
LED Lighting Watts per bulb (W)  20 
Total Number of Fixtures or Bulbs  100 
Daily Operating Hours (hrs)  10 
Working Days Per Month  25 
kWh Cost  10 
Maintenance & Ballast Monthly (per Bulb)  1.50 
HVAC Load Monthly Cost Factor (%)  15 
Cost per single LED Bulb  2000 
Cost for Installation (per bulb)   
Rebates (Utilities or Government) (per bulb)   
EPAct Rebates (per bulb)   
Financial Benefits

Current Lighting 
LED Lighting 
Watts per bulb (W) 
50 
20 
Number of Fixtures or Bulbs 
100 
100 
Daily Operating Hours (hrs) 
10 
10 
Watthours per day (Wh) 
50000 
20000 
Kilowatthours per day (kWh) 
50 
20 
Working Days Per Month 
25 
25 
Total kWh per Month (kWh) 
1250 
500 
kWh Cost 
10 
10 
Monthly kWh Cost 
12500.00 
5000.00 
Maintenance & Ballast Monthly (per Bulb) 
1.5 
0.00 
Maintenance & Ballast Monthly Total 
150.00 
0.00 
HVAC Load Monthly Cost Factor (%) 
15 
0% 
HVAC Monthly Cost from Lighting 
1875.00 
0.00 
Cost per Month w/ HVAC and Maintenance 
14525.00 
5000.00 
Total annual cost to operate 
174300.00 
60000.00 
Cost per single LED Tube Light. 
2000 
Cost of Installation per single LED Bulb 
0 
Rebates per single LED Bulb 
0 
EPAct Rebates per single LED Bulb 
0 
Total Savings Monthly with LED 
9525.00 
Total Savings Annually with LED 
114300.00 
Total Savings over 10 Years 
1143000.00 
Total Cost to retrofit with LED 
200000.00 
Payback Period in Months 
21.00 
Environmental Benefits

Current Lighting 
LED Lighting 
Annual System Electricity Usage (kWh) 
15000.00 
6000.00 
kWh Cost 
10.00 
10.00 
Annual System Cost 
150000.00 
60000.00 
Energy Savings from kWh Reduction 

90000.00 
CO2 Emissions Reduction (lbs)* 

11970.00 
Car Removal Equivalent (cars)** 

1.05 
Tree Planting Equivalent (acres of trees)*** 

2.30 
*Calculation based on USEPA eGRID2007 Version 1.1 estimated national avg of 1.33 lbs CO2/kWh.
**Calculation based on USEPA Emission Facts, 2000:
***Calculation based on UFA estimate of 2.6 tons of CO2 stored per acre of trees.