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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

Accounting

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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According to the information provided, we can calculate the energy for lighting according to the amount of energy per Quad, that is,

η=27.3 Quads×2.93×1011 kWhη=80868.879 kWhη=27.3 Quads×2.93×1011 kWhη=80868.879 kWh

Now is given that

Rate=$0.12/kWhRate=$0.12/kWh

Then we have that the annual cost will be,

Total Anual Cost=Energy×RateTotal Anual Cost=80868.879 kWh×$0.12/kWh∴Total Anual Cost=$9704.26Total Anual Cost=Energy×RateTotal Anual Cost=80868.879 kWh×$0.12/kWh∴Total Anual Cost=$9704.26

Total Anual Energy Cost:

According to the information given, the concept related to the total cost of energy must be applied, which will be equivalent to the total energy of the system multiplied by the sales rate, in this case mathematically it can be expressed as,

Total Anual Cost=Energy×Rate

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