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LED Energy Savings Calculator

Use this calculator to determine your Annual Energy Cost Savings resulting from changing to LED lights

ENERGY USAGE SAVINGS


1. Compute the total power (kilowatts, kW) saved by upgrading FLUORESCENT lights to energy saving LED tubes
Original
Lamp Wattage
Replacement
Lamp Wattage
Watts Saved
per Lamp
Qty of
Lamps
Total Watts
Saved
Total Kilowatts
Saved
W W= Wx = /1000=

2. Compute the total energy (kilowatt hours, kWh) saved annually by performing this upgrade
Total Kilowatts
Saved
Hours of Use
per Days
Days of Use
per Week
Week of Use
per Year
Total kWh
Saved per Year
KWx Hrs/Dayx Days/Wkx Wks/Yr= kWh/Yr

3. Compute the total energy cost savings per year
Total kWh
Saved per Year
Your Energy Cost
per kWh (Based on your power bill)
Total Energy Cost
Savings per Year
Wks/Yrx $ Wks/Yr= $ Wks/Yr

BULB COST SAVINGS


BULB COST LED lifespan (Hrs) Your Yearly Usage
  Original Bulb lifespan (hrs) hrs/year

  Description Price per bulb # Bulbs for 10 yrs # of Bulbs Cost of Bulbs for 10 yrs
  Cost of LED Bulbs $ x x = $

  Cost of Original Bulbs $ x = $

YOUR TOTAL SAVINGS


Simple Payback= Initial Cost of Lighting Upgrade $ = RETURN ON INVESTMENT
  Total Energy Cost Savings per Year $ years

OVERALL SAVINGS / YEAR= SAVINGS FROM USAGE $ Yearly Saving $
  SAVINGS FROM BULB COST/YR $



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