[01] Sara Nada, Department of Economics, Faculty of Economics & Political Science, Cairo University, Cairo, Egypt. [02] Mohamed Hamed, Department of Electrical Engineering, Faculty of Engineering, Port Said University, Port Said, Egypt.

This paper presents an economic study for a sample of domestic consumers for the electric energy. The sample is selected as Egypt to represent the developing countries while the cities inside were chosen as the capital Cairo, Port Said as a marine city and a new city. These 3 types of loads have the original official data to introduce in the research. They have too, different area and diverse number of living persons as well as separate time length as 38, 24 and 3 years. These 3 samples are selected for new families to begin living in. The change of tariff during these times is considered during data analysis. The deduced data for winter and summer seasons are accounted for the economic study where the analysis for some months development through the selected time is estimated. A comparison between the samples is derived for the costing computations and the summation of both energy and cost for all samples is deduced as a new fourth sample to be added in the investigation. A sharp economic vision for the effect of both energy and cost density per unit area in m² as well as per person and per room is evaluated and the results are analyzed.

Economic Performance of Energy, Oscillation Rate for Energy Costs, Cost Growth in Developing Countries, Cost Analysis for Domestic Loads, Energy Cost Development

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