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Green Lantern Compact Fluorescent Lamps (CFLs) and LEDs Home

About CFLs

Product Types

Order/Free Quote

Calculate Your Savings

Links

About Green Lantern

Green Lantern

Calculate Your Savings

Calculator

Graphs

Calculator

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Does not take modular bulbs into account

Time Frame (months): Average Daily Usage (hours bulb is on per day):
Wattage of Incandescent Bulb: help Wattage of CFL: help
Life of Incandescent Bulb (hours): Life of CFL (hours):
Cost of Incandescent Bulb (dollars): $ Cost of CFL (dollars): $
Cost of Electricity (dollars per kwh): $ Number of Sockets Changed (bulbs replaced):
Savings Over Time Frame (dollars):
$
Savings Over Life of CFL (dollars):
$

(if not done automatically)
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Savings = Number of sockets * (incandescent energy cost + incandescent bulb cost - CFL energy cost - CFL bulb cost)

Graphs

Click on the images to see larger versions



Savings from Replacing 60 W Incandescent Bulbs with 15 W CFLs

Click to enlarge graph

Settings
Electricity Rate: .07 $/kwh, Cost of incandescent bulb: $.75, Cost of CFL: $10.00, Life of incandescent bulb: 750 hours, Life of CFL: 10,000 hours, Hours bulb is on per day: 9
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Savings from Replacing 75 W Incandescent Bulbs with 20 W CFLs

Click to enlarge graph

Settings
Electricity Rate: .07 $/kwh, Cost of incandescent bulb: $.75, Cost of CFL: $10.00, Life of incandescent bulb: 750 hours, Life of CFL: 10,000 hours, Hours bulb is on per day: 9
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Savings from Replacing 100 W Incandescent Bulbs with 25 W CFLs

Click to enlarge graph

Settings
Electricity Rate: .07 $/kwh, Cost of incandescent bulb: $.75, Cost of CFL: $10.00, Life of incandescent bulb: 750 hours, Life of CFL: 10,000 hours, Hours bulb is on per day: 9
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Savings from Replacing One 75 W Incandescent Bulb with One 20 W CFL

Click to enlarge graph

Settings
Electricity Rate: .07 $/kwh, Cost of incandescent bulb: $.75, Cost of CFL: $10.00, Life of incandescent bulb: 750 hours, Life of CFL: 10,000 hours
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Other pages in this site: Home, About CFLs, Product Types, Order Bulbs/Request Free Quote, Links, About Green Lantern

Contact: e-mail: green-lantrn@juno.com
            PO Box 413
            Abita Springs, LA 70420
            US

Last Updated: March 25, 2001
Copyright: Derek Lemoine 2001