Aim: To conduct an energy audit of the whole school and check the amount of electricity consumed over a selected time period and find ways in which we can reduce the electricity bill in MBIS.

Research Question: What can we do to reduce the electricity bill in MBIS?

Background information: The only way of reducing the electricity bill of MBIS is by decreasing the amount of electricity used. Thus in turn, we have to identify the areas which are using excessive amount of energy and find ways to reduce that consummation. The energy is calculated by multiplying the number of hours with the power of each appliance hence its unit is kWh.

Data collection and processing:

1st and 2nd floor in the Dp block:

Table 1:

Total energy used in a day, month and year in different areas:

Table 2:

All areas combined:

Total energy used per day: 1896.96 kWh        

Total energy used per month: 35358.40 kWh

Total energy used per year: 612573.31 kWh

Graph to show the contrast between the energy used per day in different areas:

Chart 1:

Graph to show how much energy is used by each appliance:

Chart 2:

Graph to show how much energy an AC consumes in one day:

Chart 3:

Money saved in on a day when AC’s were not used:

Summer day when AC’s are used: 550 kWh

Days when AC’s are switched off: 325 kWh

Cost per unit: 7 Rs

Hence the number of rupees saved in a day while not using the AC’s = [550 x 7] – [325 x 7] =1575 Rs

Note: the values used in the above calculations were theoretical hence the amount of money saved when the ACs are not in use is very precise and accurate. 

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Discussion: The only way in which the electricity bill can be reduced is by decreasing the amount of energy used. This can be brought about in many ways. First we have to identify the area in which most amount of electricity is being used. Looking at chart 1 we analysis that the most energy was consumed in the Dp foyer and the kitchen. This area results in the highest energy usage mainly due to the electricity used in the kitchen. The appliances in the kitchen are being used constantly because food is being cooked at various different intervals. The ...

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