Energy Savings Calculator

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Incandescent Lamp Energy Efficient Lamp

Wattage:

Rated Average Life Hours:

# of Bulbs:

Kilowatt/Hour Cost [$] : *

Total Energy Costs:

TOTAL $ SAVINGS:
(over the life of the bulb)

* US Energy Information Administration: www.eia.gov - as of 5/23/12

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ROI Calculator

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Incandescent Lamp Energy Efficient Lamp

Date:

Price [$]:

Wattage:

Rated Average Life Hours:

Hours Used Per Day:

Hours Used Per Year:

Watt/Year:

Kilowatts/Year:

Energy Cost Per KW [$]:

Yearly Energy Cost [$]:

Lamp Cost Per Year [$]: **

TOTAL COST OF OPERATION & LAMPS (PER YEAR)**:

TOTAL COST OF OPERATION & LAMPS (OVER LIFE OF ENERGY EFFICIENT LAMP)**:

SAVINGS OVER LIFE OF ENERGY EFFICIENT LAMP:

PAYBACK PERIOD*
(in years):

RELAMPING DATE

    * please note all labor costs associated with relamping are not included in this
       calculation
  ** for the first year only

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