| Energy Saving Calculator |
| Enter the wattage of the existing lamps: |
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| Enter the wattage of the replacement lamps: |
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| Enter total number of lamps: |
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Enter the energy cost per Kilowatt:
Enter .095 for 9½¢ |
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| Enter the total hours used per day: |
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| Enter the days used per week: |
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| Enter the weeks used per year: |
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Enter the estimated desired light level:
0=no dimming - Full light output,
.4=typical dimming - 40% dimmed, 60% light output remaining |
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Enter the average number of hours of
Daylight Harvesting from sunlight per day:
Sunlight is direct, reflected and/or diffused light from the Sun.
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Enter the estimated additional dimming
from Daylight Harvesting:
0=No windows, .15=Northern locale Northern exposure,
.30=In between, .45=Southern locale Southern exposure
"Locale" is within the Northern Hemisphere. |
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| Annual Costs And Savings |
| Current annual cost without: |
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| Saving earned from lamp change: |
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| Additional saving with dimming: |
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| Additional saving with sunlight: |
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| Total Saved: |
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| Note: Entering inacurate numbers, such as more than
7 days per week, or 24 hours per day, will produce unusable results. Also, entering 1 for the brightness or
Daylight Harvesting variables means the lamps are off. If either of them or the total of those two variables is greater than 1,
then again, the results will be unusable.
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