Incandescent/Halogen Lamps 14 of 15
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Energy Savings Calculations at 10 cents per kWh

Example I:

65W HIR™ Lamp replacing 90 W PAR Halogen

Burning Hrs.
per yr.
$ saved per yr.
per socket
4500

$11
8760 (24-hr burn)
$22

Example II:

26W Compact Fluorescent Lamp replacing 100 W Incandescent

Burning Hrs.
per yr.
$ saved per yr.
per socket
4500

$33
8760 (24-hr burn)
$65

GE's HIR lamps save energy over standard halogen lamps but they also cost more. Customers want to know: "is it worth it?" Here is how you calculate energy savings:

(1) (Watts saved) x (burning hours per year) = watt-hours saved.

(2) Divide this by 1000 to get kiloWatt-hours saved per year.

(3) Multiply this by the energy rate ($ per kWh) to get $ saved per year.

If you use . . . You will get . . .
Lamp watts and burning hours per year Energy $ saved per socket per year
Total watts at site and burning hours per year Energy $ saved per year over entire site
Lamp watts and life of lamp (in hours) Energy $ saved over life of the lamp

You can also use the Simple Energy Estimator (discussed later in the "Tools" module) to carry out this calculation.

Click here for ----> ENERGY ESTIMATOR
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