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Energy is the basis of our existence. In our day to day life, some of the key areas where we can not survive without energy include transportation, food, communication, lighting, heating/cooling, etc. All of our current transportation modes including automobiles, trains, buses, airplanes, etc. run on energy (derived from fossil fuels or electricity, etc.). Our food is grown (whether it be grains, vegetables, etc.) with considerable energy expenditure, and its storage and transportation also consumes energy. Our modes of communication, such as telephones, internet, etc. run on energy (electricity). In most regions of world, we require energy for either heating or cooling during most part of the year.
Some of the ways in which we can make a campus green and energy efficient is by replacing all appliances (such as air conditioning, lighting, pumps, etc.) with energy efficient devices, use of renewable energy (such as solar power, wind energy, etc.), encouraging users to reduce the energy wastage, installing sensor based electrical controls (to switch off appliances when no one is in the room, etc.), promoting green days (such as no vehicle day, carpooling day, walking to the campus instead of driving, etc.), etc.
Hope this helps.
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