Saving the Earth via choice of light bulb

• 1 15-W fluorescent fixture produces as much light as 1 75-W Incan bulb.

• The fluorescent bulb lasts for 10,000 hours
• the Incan bulb lasts for 1000 hours

• The fluorescent bulb costs $15.00 (which is why no one buys them)
• The Incan bulb costs $0.75 (which is why everyone buys them)

Now lets calculate the total cost over the lifetime of the fluorescent bulb assuming a cost rate of 10 cents per KWH.

• Fluorescent bulb = 10,000 hours * 15 Watts = 150 KWH * 10 cents per KWH = $15 + the cost of the bulb total cost = 30$

• Incan bulb = 1,000 hours * 75 Watts = 75 KWH * 10 cents per KWH = $7.50 + the cost of the bulb total cost = $8.25

• Now multiply this by 10 = $82.50

So, over a 10,000 hour period, the fluorescent bulb has a total cost of $30 and the Incands have a total cost of $82.50.

You just saved 50 bucks as well as 600 KWH of energy.

Clearly always use fluorescent bulbs if you are interested in saving energy and money.

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