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LIGHTING SURVEY
Carry out a survey of the lighting in your school and calculate how much electricity can be saved by replacing filament bulbs with fluorescent lamps or tubes. You might find places where lights could be switched off all together at least for part of the day. You may find this sheet useful.
PRINT OUT A WORK SHEET TO RECORD YOUR INFORMATION
Fluorescent lamps (both strip and compact) convert more of the electricity they consume into light than filament types of similar brightness. Strip lights consume about 10 watts per 300mm of length.
Filament lamp
(watts) |
Cost per hour
(pence) |
Equivalent fluorescent lamp
(watts) |
Cost per hour
(pence) |
| 100 |
0.80 |
20 |
0.16 |
| 60 |
0.48 |
11 |
0.09 |
| 40 |
0.32 |
7 |
0.06 |
Based on 8p per kWh
From the findings of your survey, where is electricity being wasted and what can be done to save electricity on lighting in your school? Discuss your answers with your class and teacher. Present your findings to the head teacher and governors.
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