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Homework answers / question archive / According to the information on the EERE posting, 22% of the U
According to the information on the EERE posting, 22% of the U.S. annual electrical energy consumption is for lighting. The amount of energy is 8.2 Quads, (1.0 Quad = 1015 BTU). This is in agreement with the information given in the International Energy Agency (IEA). Assume that the electrical energy is provided by a power plant operating at an efficiency of 30%. The amount of energy that must be provided by a primary source is then equal to E = 8.2 Quads/0.30 = 27.3 Quads. That is, 27.3 Quads of energy is required as feedstock in a power plant to provide the energy for lighting. Express the 27.3 Quads in units of million barrels of oil equivalent (Mboe). A units conversion is: 1.0 Quad arrow 181 Mboe. What is the annual cost of the energy for lighting to the ratepayers of the electrical energy? (Assume a rate of $0.12/kWh). Note: 1.0 Quad = 2.93×10112.93×1011 kWh.
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