ROI-LED Calculator


Calculate Reduced CO2
(with costs & interest)
Apply savings to Investment

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Power companies that burn fuel will emit Carbon Dioxide, and are taxed on metric tons of CO2.  In addition, they have expenses to reduce, control and collect such emission. 
Levels of CO2 emission as measured and analyzed are shown in the following fuel selection block.  Reduction of electrical demand will reduce emission of Carbon Dioxide and other pollutants from any fuel used.  To reduce taxes and other expense, power companies can assist funding of LED lighting for the end user, and gain many beneficial years for all. 
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In 2010, power plants were the largest stationary sources of direct emissions with 2,324 million metric tons of carbon dioxide equivalent (mmtCO2e), followed by petroleum refineries with emissions of 183 mmtCO2e.  The ROI-LED Calculator shows the reduced CO2 production, payback time, and both the annual  and life-time cost & savings figures for reduced energy demand of LED lighting.  Reduction of CO2 emission reduces expenses and tax for the power plant which may then provide credits toward the LED customer.  
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Select a cell with mouse, make a change or not, and step-enter with the Tab Key
Step backward with Shift Tab.         Click mouse on white space before printing.

 
   Parameters for energy statistics:      Power Plant Fuel - Producing CO2  
  Enter Power Consumption & No. of Lighting Fixtures  

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 Measured CO2 emissions and cost in USA
Select Fuel CCS
[CO2 Capture & Sequestration]
CCS Cost = work, tax, fine, etc.
$per Metric Ton of CO2

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*Other includes municipal solid waste, tires & other fuels emitting anthropogenic CO2 when burned for electricity.
Coal
Natural Gas
Petroleum
*Other
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kiloGrams per kWHr  up arrow
Electric Company
Reduced Metric Tons and Cost SAVED
   Annual  Label Yr Lifetime 
Tons of CO2 Label Label
CCS Cost $ Label $ Label
CCS rebate
for LEDs?
YES
NO
Get % of saved CCS cost from Power Company.
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Original Watts   LED  Watts Quantity 
Total Label kW Total Label kW Label
Hour-Day-Week Notes:
• For Occ. sensors or dimming,
   use average hours
• Photocells need nighttime hours
• Use decimal if holidays affect
   lighting (1 day = 0.14 wk)
 ×  Daily use  Hours
× Weekly use  Days
×  Yearly use   Weeks
×  Power Cost  $ / kWhr
LED Life  Hours
  Annual Energy Cost: Original  $Label LED  $Label
Annual Savings:
=  $Label 
Reduced Power Usage:               
= Label  kiloWatt Hours 
   LED Investment and Interest:
 
Quan. Fixture Cost: $ ×Label $Label solid space
 Energy costs & savings during LED lifetime:
Label LED Hours ÷ Label Hours/Year = Label Years Lifetime
×  $Label annual energy cost  = $Label
× $Label annual energy savings  = $Label
Maint. Visit Interval: Years     +
Maint. Cost per Visit: $   $Label
Fixed Job Cost: $       +
$ paid-per-kWatt: $ Rebate  - $Label
Sub Total   $Label
 CCS (CO2) Rebate (if checked YES) - $Label
      = $Label  Label  +  % LabelLabel  = $Label investment + $Label Energy  = $Label Project
 
   Original fixture lifetime maintenance and energy costs:  
    Original fixture life  Hours   ÷  Label Hours/Year  = Label Years Lifetime  
Years ×  $Label annual energy cost   =   $Label Repair/Replacement Cost $ × Label = $Label
 $Label Fixtures & Maint. + $Label energy = $Label  Orig. Cost in LED Lifetime, replaced Label times.
   Payback time and ROI with amortized costs:  Label Label  
  LED Investment ÷ Energy Savings  $Label ÷ $Label   =  LabelLabel Years on energy alone  
Investment ÷ ( Energy + Maint. Savings ) $Label ÷ $Label   =  LabelLabel Years on energy & maint.
 Simple ROI:   (energy & maint. Payback Investment ) ÷ Investment    =  LabelLabel % ROI 
   
RESTORE DEFAULT VALUES
 
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