$ SAVINGS FOR A HOME OFFICE -
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 office | $ Savings due to electricity saved
Annual savings of $54.12
3 year savings of $162.36 |
Current incandescent bulbs used | 3 | 100 | incandescent | 300 | 6 hrs. daily ave.
2190 hrs. annually | 10 cents | 22 cents | $ .22 x 300 watts=$66.00 |
Replace with Total Spectrum Bulbs | 3 | 18 | total spectrum | 54 | 6 hrs. daily ave.
2190 hrs. annually | 10 cents | 22 cents | $ .22 x 54 watts=$11.88 |
$ Savings due to electricity saved @ $ .10 per kilowatt hr.: Annual savings of $54.12, 3 year savings of $162.36 |
| |
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 office | $ Savings due to electricity saved
Annual savings of $81.18
3 year savings of $243.54 |
Current incandescent bulbs used | 3 | 100 | incandescent |
300 | 6 hrs. daily ave.
2190 hrs. annually | 15 cents | 33 cents | $ .33 x 300 watts=$99.00
|
Replace with Total Spectrum Bulbs | 3 | 18 | total spectrum |
54 | 6 hrs. daily ave.
2190 hrs. annually | 15 cents | 33 cents | $ .33 x 54 watts=$17.82 |
$ Savings due to electricity saved @ $ .15 per kilowatt hr.: Annual savings of $81.18, 3 year savings of $243.54 |
| |
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 office | $ Savings due to electricity saved
Annual savings of $135.30
3 year savings of $405.90 |
Current incandescent bulbs used | 3 | 100 | incandescent | 300 | 6 hrs. daily ave.
2190 hrs. annually | 25 cents | 55 cents | $ .55 x 300 watts=$165.00 |
Replace with Total Spectrum Bulbs | 3 | 18 | total spectrum | 54 |
6 hrs. daily ave.
2190 hrs. annually | 25 cents | 55 cents | $ .55 x 54 watts=$29.70 |
$ Savings due to electricity saved @ $ .25 per kilowatt hr.: Annual savings of $135.30, 3 year savings of $405.90 |
