$ SAVINGS FOR A MASTER BEDROOM -
REPLACE INCANDESCENT BULBS WITH ENERGY-EFFICIENT TOTAL SPECTRUM BULBS |
Household of 4 persons | * Annual cost per watt rounded to the nearest cent | |
Calculation based on cost of $ .10 per kilowatt hr. |
# of bulbs | Wattage | Bulb Type | Total Watts Used
| Usage | Cost per kilowatt hour | Annual cost per watt* | Total annual electric $
cost for master bedroom | $ Savings due to electricity saved
Annual savings of $17.22
3 year savings of
$51.56 |
Current incandescent bulbs used | 3 | 100 | incandescent | 300 | 2 hrs. daily ave.
730 hrs. annually | 10 cents | 7 cents | $ .07 x 300 watts=$21.00 |
Replace with Total Spectrum Bulbs | 3 | 18 | total spectrum | 54 | 2 hrs. daily ave.
730 hrs. annually | 10 cents | 7 cents | $ .07 x 54 watts=$3.78 |
$ Savings due to electricity saved @ $ .10 per kilowatt hr.: Annual savings of $17.22, 3 year savings of $51.56 |
| |
Calculation based on cost of $ .15 per kilowatt hr. | # of bulbs | Wattage | Bulb Type | Total Watts Used | Usage | Cost per kilowatt hour | Annual cost per watt* | Total annual electric $
cost for master bedroom |
$ Savings due to electricity saved
Annual savings of $27.06
3 year savings of $81.18 |
Current incandescent bulbs used |
3 | 100 | incandescent | 300 |
2 hrs. daily ave.
730 hrs. annually | 15 cents | 11 cents | $ .11 x 300 watts=$33.00 |
Replace with Total Spectrum Bulbs | 3 | 18 | total spectrum | 54 | 2 hrs. daily ave.
730 hrs. annually | 15 cents | 11 cents | $ .11 x 54 watts=$5.94 |
$ Savings due to electricity saved @ $ .15 per kilowatt hr.: Annual savings of $27.06, 3 year savings of $81.18 |
| |
Calculation based on cost of $ .25 per kilowatt hr. | # of bulbs | Wattage | Bulb Type | Total Watts Used | Usage | Cost per kilowatt hour | Annual cost per watt* | Total annual electric $
cost for master bedroom | $ Savings due to electricity saved
Annual savings of $44.28
3 year savings of $132.84 |
Current incandescent bulbs used | 3 | 100 | incandescent | 300 | 2 hrs. daily ave.
730 hrs. annually | 25 cents | 18 cents | $ .18 x 300 watts=$54.00 |
Replace with Total Spectrum Bulbs | 3 | 18 | total spectrum | 54 |
2 hrs. daily ave.
730 hrs. annually | 25 cents | 18 cents | $ .18 x 54 watts=$9.72 |
$ Savings due to electricity saved @ $ .25 per kilowatt hr.: Annual savings of $44.25, 3 year savings of $132.84 |
