JH Classroom Electricity Load
Before Changes
| Uses | Calculations | KWh/mo. |
| Room lights | 32w x 58 bulbs =1664W x 8hrs/day =13,312 watt hours x 22 days/mo. | 293 kWh |
| Computers | 400w computer+ 100w monitor= 500w x 6 computers x2 hrs/day x 22 days/mo. | 132 kWh |
| Other lights | 4 x 32w = 128w x 8hrs/day x 22 days | 22.5 kWh |
| Overhead projector | 300w x 3 hrs. x 22 days | 19.8 |
| Microwave | 1300w X 6hrs/mo. | 8 kWh |
| Tea Kettle | 1000w x .5 hrs/wk x 4 wks/mo. | 2 kWh |
| Phone | 14w x 30days | .42 kWh |
| TV & VCR | 85w | .1 kWh |
| Printer | 36w x .5/mo. | .018 kWh |
| Total kWh/month | | 477.8 kWh |
After Changes
We removed 38 32-watt fluorescent bulbs from the overhead fixtures, leaving us plenty of light.
This totals approximately 214 kWh/mo. which is a 61% reduction in lighting energy use.
This would bring our monthly load down to 263.8 kWh,a 44% overall reduction.
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