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Compact Florescent Light Bulbs have come a long way. The light quality, brightness and the ability to dim are much better than even a few years ago. Not to mention that the energy savings help these bulbs pay for themselves.
By swapping out 90+% of the light bulbs from incandescent to Compact Florescent Light Bulbs in our home over the past few years - we were able to save over 600 kWh per year or about 10% of our total usage. In addition, we are reducing our CO2 output by over 970 pounds per year. We are still working on the rest of the fixtures. There is the garage door opener light that will not be swapped out as we need that light to be at full brightness immediately.
The table below diagrams our energy savings. It is important to gather this information if you want a true cost benefit analysis. It did take some time to calulate the amount we use each light bulb they are our best estimates. Winter usage is higher than Summer usage so we averaged it out.
| Total Bulbs Changed |
80 |
|
Savings to Date (lbs of CO2) |
1755.73 |
| Percent of Bulbs Changed |
94.1% |
|
Annual Savings (lbs of CO2) |
970.54 |
| Total Cost of the CFL's |
$345.84 |
|
Annual Savings |
$97.02 |
| Savings To Date |
$185.96 |
|
Watts Saved per Day |
1,765.0 |
| Return on Investment |
-$159.88 |
|
KW Saved Per Year |
644.22 |
| Breakeven Point (Years) |
1.65 |
|
As of |
9/1/2010 |
*On Going Recommendation:
- Buy CFL's when they are on sale.
- Switch to CFL's when the old bulbs stop working.
- Keep your old working bulbs so when you move you can take the CFL's with you.
- Switch the most used fixtures. You will get a bigger bang for your buck.
- If a CFL is not possible, think dimmable.
*Website Recommendations:
- The caculations as to CO2 saving is courtesy of
http://www.onebillionbulbs.com/
That is "Going Green and Saving Green".
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